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2025-11-18 23:07:42 -08:00
commit a13e358df4
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# fmt: off
# flake8: noqa
from . import config, datasets, metrics, utils
from .eval import Evaluator

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# fmt: off
# flake8: noqa
import inspect
from functools import wraps
from time import perf_counter
DO_TIMING = False
DISPLAY_LESS_PROGRESS = False
timer_dict = {}
counter = 0
def time(f):
@wraps(f)
def wrap(*args, **kw):
if DO_TIMING:
# Run function with timing
ts = perf_counter()
result = f(*args, **kw)
te = perf_counter()
tt = te - ts
# Get function name
arg_names = inspect.getfullargspec(f)[0]
if arg_names[0] == "self" and DISPLAY_LESS_PROGRESS:
return result
elif arg_names[0] == "self":
method_name = type(args[0]).__name__ + "." + f.__name__
else:
method_name = f.__name__
# Record accumulative time in each function for analysis
if method_name in timer_dict.keys():
timer_dict[method_name] += tt
else:
timer_dict[method_name] = tt
# If code is finished, display timing summary
if method_name == "Evaluator.evaluate":
print("")
print("Timing analysis:")
for key, value in timer_dict.items():
print("%-70s %2.4f sec" % (key, value))
else:
# Get function argument values for printing special arguments of interest
arg_titles = ["tracker", "seq", "cls"]
arg_vals = []
for i, a in enumerate(arg_names):
if a in arg_titles:
arg_vals.append(args[i])
arg_text = "(" + ", ".join(arg_vals) + ")"
# Display methods and functions with different indentation.
if arg_names[0] == "self":
print("%-74s %2.4f sec" % (" " * 4 + method_name + arg_text, tt))
elif arg_names[0] == "test":
pass
else:
global counter
counter += 1
print("%i %-70s %2.4f sec" % (counter, method_name + arg_text, tt))
return result
else:
# If config["TIME_PROGRESS"] is false, or config["USE_PARALLEL"] is true, run functions normally without timing.
return f(*args, **kw)
return wrap

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# fmt: off
# flake8: noqa
"""Config."""
import argparse
import os
def parse_configs():
"""Parse command line."""
default_eval_config = get_default_eval_config()
default_eval_config["DISPLAY_LESS_PROGRESS"] = True
default_dataset_config = get_default_dataset_config()
default_metrics_config = {"METRICS": ["TETA"]}
config = {
**default_eval_config,
**default_dataset_config,
**default_metrics_config,
}
parser = argparse.ArgumentParser()
for setting in config.keys():
if type(config[setting]) == list or type(config[setting]) == type(None):
parser.add_argument("--" + setting, nargs="+")
else:
parser.add_argument("--" + setting)
args = parser.parse_args().__dict__
for setting in args.keys():
if args[setting] is not None:
if type(config[setting]) == type(True):
if args[setting] == "True":
x = True
elif args[setting] == "False":
x = False
else:
raise Exception(
f"Command line parameter {setting} must be True/False"
)
elif type(config[setting]) == type(1):
x = int(args[setting])
elif type(args[setting]) == type(None):
x = None
else:
x = args[setting]
config[setting] = x
eval_config = {k: v for k, v in config.items() if k in default_eval_config.keys()}
dataset_config = {
k: v for k, v in config.items() if k in default_dataset_config.keys()
}
metrics_config = {
k: v for k, v in config.items() if k in default_metrics_config.keys()
}
return eval_config, dataset_config, metrics_config
def get_default_eval_config():
"""Returns the default config values for evaluation."""
code_path = get_code_path()
default_config = {
"USE_PARALLEL": True,
"NUM_PARALLEL_CORES": 8,
"BREAK_ON_ERROR": True,
"RETURN_ON_ERROR": False,
"LOG_ON_ERROR": os.path.join(code_path, "error_log.txt"),
"PRINT_RESULTS": True,
"PRINT_ONLY_COMBINED": True,
"PRINT_CONFIG": True,
"TIME_PROGRESS": True,
"DISPLAY_LESS_PROGRESS": True,
"OUTPUT_SUMMARY": True,
"OUTPUT_EMPTY_CLASSES": True,
"OUTPUT_TEM_RAW_DATA": True,
"OUTPUT_PER_SEQ_RES": True,
}
return default_config
def get_default_dataset_config():
"""Default class config values"""
code_path = get_code_path()
default_config = {
"GT_FOLDER": os.path.join(
code_path, "data/gt/tao/tao_training"
), # Location of GT data
"TRACKERS_FOLDER": os.path.join(
code_path, "data/trackers/tao/tao_training"
), # Trackers location
"OUTPUT_FOLDER": None, # Where to save eval results (if None, same as TRACKERS_FOLDER)
"TRACKERS_TO_EVAL": ['TETer'], # Filenames of trackers to eval (if None, all in folder)
"CLASSES_TO_EVAL": None, # Classes to eval (if None, all classes)
"SPLIT_TO_EVAL": "training", # Valid: 'training', 'val'
"PRINT_CONFIG": True, # Whether to print current config
"TRACKER_SUB_FOLDER": "data", # Tracker files are in TRACKER_FOLDER/tracker_name/TRACKER_SUB_FOLDER
"OUTPUT_SUB_FOLDER": "", # Output files are saved in OUTPUT_FOLDER/tracker_name/OUTPUT_SUB_FOLDER
"TRACKER_DISPLAY_NAMES": None, # Names of trackers to display, if None: TRACKERS_TO_EVAL
"MAX_DETECTIONS": 0, # Number of maximal allowed detections per image (0 for unlimited)
"USE_MASK": False, # Whether to use mask data for evaluation
}
return default_config
def init_config(config, default_config, name=None):
"""Initialize non-given config values with defaults."""
if config is None:
config = default_config
else:
for k in default_config.keys():
if k not in config.keys():
config[k] = default_config[k]
if name and config["PRINT_CONFIG"]:
print("\n%s Config:" % name)
for c in config.keys():
print("%-20s : %-30s" % (c, config[c]))
return config
def update_config(config):
"""
Parse the arguments of a script and updates the config values for a given value if specified in the arguments.
:param config: the config to update
:return: the updated config
"""
parser = argparse.ArgumentParser()
for setting in config.keys():
if type(config[setting]) == list or type(config[setting]) == type(None):
parser.add_argument("--" + setting, nargs="+")
else:
parser.add_argument("--" + setting)
args = parser.parse_args().__dict__
for setting in args.keys():
if args[setting] is not None:
if type(config[setting]) == type(True):
if args[setting] == "True":
x = True
elif args[setting] == "False":
x = False
else:
raise Exception(
"Command line parameter " + setting + "must be True or False"
)
elif type(config[setting]) == type(1):
x = int(args[setting])
elif type(args[setting]) == type(None):
x = None
else:
x = args[setting]
config[setting] = x
return config
def get_code_path():
"""Get base path where code is"""
return os.path.abspath(os.path.join(os.path.dirname(__file__), ".."))

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# fmt: off
# flake8: noqa
"""Datasets."""
from .coco import COCO
from .tao import TAO

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# fmt: off
# flake8: noqa
import csv
import io
import os
import traceback
import zipfile
from abc import ABC, abstractmethod
from copy import deepcopy
import numpy as np
from .. import _timing
from ..utils import TrackEvalException
class _BaseDataset(ABC):
@abstractmethod
def __init__(self):
self.tracker_list = None
self.seq_list = None
self.class_list = None
self.output_fol = None
self.output_sub_fol = None
self.should_classes_combine = True
self.use_super_categories = False
# Functions to implement:
@abstractmethod
def _load_raw_file(self, tracker, seq, is_gt):
...
@_timing.time
@abstractmethod
def get_preprocessed_seq_data(self, raw_data, cls):
...
@abstractmethod
def _calculate_similarities(self, gt_dets_t, tracker_dets_t):
...
# Helper functions for all datasets:
@classmethod
def get_class_name(cls):
return cls.__name__
def get_name(self):
return self.get_class_name()
def get_output_fol(self, tracker):
return os.path.join(self.output_fol, tracker, self.output_sub_fol)
def get_display_name(self, tracker):
"""Can be overwritten if the trackers name (in files) is different to how it should be displayed.
By default this method just returns the trackers name as is.
"""
return tracker
def get_eval_info(self):
"""Return info about the dataset needed for the Evaluator"""
return self.tracker_list, self.seq_list, self.class_list
@_timing.time
def get_raw_seq_data(self, tracker, seq):
"""Loads raw data (tracker and ground-truth) for a single tracker on a single sequence.
Raw data includes all of the information needed for both preprocessing and evaluation, for all classes.
A later function (get_processed_seq_data) will perform such preprocessing and extract relevant information for
the evaluation of each class.
This returns a dict which contains the fields:
[num_timesteps]: integer
[gt_ids, tracker_ids, gt_classes, tracker_classes, tracker_confidences]:
list (for each timestep) of 1D NDArrays (for each det).
[gt_dets, tracker_dets, gt_crowd_ignore_regions]: list (for each timestep) of lists of detections.
[similarity_scores]: list (for each timestep) of 2D NDArrays.
[gt_extras]: dict (for each extra) of lists (for each timestep) of 1D NDArrays (for each det).
gt_extras contains dataset specific information used for preprocessing such as occlusion and truncation levels.
Note that similarities are extracted as part of the dataset and not the metric, because almost all metrics are
independent of the exact method of calculating the similarity. However datasets are not (e.g. segmentation
masks vs 2D boxes vs 3D boxes).
We calculate the similarity before preprocessing because often both preprocessing and evaluation require it and
we don't wish to calculate this twice.
We calculate similarity between all gt and tracker classes (not just each class individually) to allow for
calculation of metrics such as class confusion matrices. Typically the impact of this on performance is low.
"""
# Load raw data.
raw_gt_data = self._load_raw_file(tracker, seq, is_gt=True)
raw_tracker_data = self._load_raw_file(tracker, seq, is_gt=False)
raw_data = {**raw_tracker_data, **raw_gt_data} # Merges dictionaries
# Calculate similarities for each timestep.
similarity_scores = []
for _, (gt_dets_t, tracker_dets_t) in enumerate(
zip(raw_data["gt_dets"], raw_data["tk_dets"])
):
ious = self._calculate_similarities(gt_dets_t, tracker_dets_t)
similarity_scores.append(ious)
raw_data["similarity_scores"] = similarity_scores
return raw_data
@staticmethod
def _load_simple_text_file(
file,
time_col=0,
id_col=None,
remove_negative_ids=False,
valid_filter=None,
crowd_ignore_filter=None,
convert_filter=None,
is_zipped=False,
zip_file=None,
force_delimiters=None,
):
"""Function that loads data which is in a commonly used text file format.
Assumes each det is given by one row of a text file.
There is no limit to the number or meaning of each column,
however one column needs to give the timestep of each det (time_col) which is default col 0.
The file dialect (deliminator, num cols, etc) is determined automatically.
This function automatically separates dets by timestep,
and is much faster than alternatives such as np.loadtext or pandas.
If remove_negative_ids is True and id_col is not None, dets with negative values in id_col are excluded.
These are not excluded from ignore data.
valid_filter can be used to only include certain classes.
It is a dict with ints as keys, and lists as values,
such that a row is included if "row[key].lower() is in value" for all key/value pairs in the dict.
If None, all classes are included.
crowd_ignore_filter can be used to read crowd_ignore regions separately. It has the same format as valid filter.
convert_filter can be used to convert value read to another format.
This is used most commonly to convert classes given as string to a class id.
This is a dict such that the key is the column to convert, and the value is another dict giving the mapping.
Optionally, input files could be a zip of multiple text files for storage efficiency.
Returns read_data and ignore_data.
Each is a dict (with keys as timesteps as strings) of lists (over dets) of lists (over column values).
Note that all data is returned as strings, and must be converted to float/int later if needed.
Note that timesteps will not be present in the returned dict keys if there are no dets for them
"""
if remove_negative_ids and id_col is None:
raise TrackEvalException(
"remove_negative_ids is True, but id_col is not given."
)
if crowd_ignore_filter is None:
crowd_ignore_filter = {}
if convert_filter is None:
convert_filter = {}
try:
if is_zipped: # Either open file directly or within a zip.
if zip_file is None:
raise TrackEvalException(
"is_zipped set to True, but no zip_file is given."
)
archive = zipfile.ZipFile(os.path.join(zip_file), "r")
fp = io.TextIOWrapper(archive.open(file, "r"))
else:
fp = open(file)
read_data = {}
crowd_ignore_data = {}
fp.seek(0, os.SEEK_END)
# check if file is empty
if fp.tell():
fp.seek(0)
dialect = csv.Sniffer().sniff(
fp.readline(), delimiters=force_delimiters
) # Auto determine structure.
dialect.skipinitialspace = (
True # Deal with extra spaces between columns
)
fp.seek(0)
reader = csv.reader(fp, dialect)
for row in reader:
try:
# Deal with extra trailing spaces at the end of rows
if row[-1] in "":
row = row[:-1]
timestep = str(int(float(row[time_col])))
# Read ignore regions separately.
is_ignored = False
for ignore_key, ignore_value in crowd_ignore_filter.items():
if row[ignore_key].lower() in ignore_value:
# Convert values in one column (e.g. string to id)
for (
convert_key,
convert_value,
) in convert_filter.items():
row[convert_key] = convert_value[
row[convert_key].lower()
]
# Save data separated by timestep.
if timestep in crowd_ignore_data.keys():
crowd_ignore_data[timestep].append(row)
else:
crowd_ignore_data[timestep] = [row]
is_ignored = True
if (
is_ignored
): # if det is an ignore region, it cannot be a normal det.
continue
# Exclude some dets if not valid.
if valid_filter is not None:
for key, value in valid_filter.items():
if row[key].lower() not in value:
continue
if remove_negative_ids:
if int(float(row[id_col])) < 0:
continue
# Convert values in one column (e.g. string to id)
for convert_key, convert_value in convert_filter.items():
row[convert_key] = convert_value[row[convert_key].lower()]
# Save data separated by timestep.
if timestep in read_data.keys():
read_data[timestep].append(row)
else:
read_data[timestep] = [row]
except Exception:
exc_str_init = (
"In file %s the following line cannot be read correctly: \n"
% os.path.basename(file)
)
exc_str = " ".join([exc_str_init] + row)
raise TrackEvalException(exc_str)
fp.close()
except Exception:
print("Error loading file: %s, printing traceback." % file)
traceback.print_exc()
raise TrackEvalException(
"File %s cannot be read because it is either not present or invalidly formatted"
% os.path.basename(file)
)
return read_data, crowd_ignore_data
@staticmethod
def _calculate_mask_ious(masks1, masks2, is_encoded=False, do_ioa=False):
"""Calculates the IOU (intersection over union) between two arrays of segmentation masks.
If is_encoded a run length encoding with pycocotools is assumed as input format, otherwise an input of numpy
arrays of the shape (num_masks, height, width) is assumed and the encoding is performed.
If do_ioa (intersection over area) , then calculates the intersection over the area of masks1 - this is commonly
used to determine if detections are within crowd ignore region.
:param masks1: first set of masks (numpy array of shape (num_masks, height, width) if not encoded,
else pycocotools rle encoded format)
:param masks2: second set of masks (numpy array of shape (num_masks, height, width) if not encoded,
else pycocotools rle encoded format)
:param is_encoded: whether the input is in pycocotools rle encoded format
:param do_ioa: whether to perform IoA computation
:return: the IoU/IoA scores
"""
# Only loaded when run to reduce minimum requirements
from pycocotools import mask as mask_utils
# use pycocotools for run length encoding of masks
if not is_encoded:
masks1 = mask_utils.encode(
np.array(np.transpose(masks1, (1, 2, 0)), order="F")
)
masks2 = mask_utils.encode(
np.array(np.transpose(masks2, (1, 2, 0)), order="F")
)
# use pycocotools for iou computation of rle encoded masks
ious = mask_utils.iou(masks1, masks2, [do_ioa] * len(masks2))
if len(masks1) == 0 or len(masks2) == 0:
ious = np.asarray(ious).reshape(len(masks1), len(masks2))
assert (ious >= 0 - np.finfo("float").eps).all()
assert (ious <= 1 + np.finfo("float").eps).all()
return ious
@staticmethod
def _calculate_box_ious(bboxes1, bboxes2, box_format="xywh", do_ioa=False):
"""Calculates the IOU (intersection over union) between two arrays of boxes.
Allows variable box formats ('xywh' and 'x0y0x1y1').
If do_ioa (intersection over area) , then calculates the intersection over the area of boxes1 - this is commonly
used to determine if detections are within crowd ignore region.
"""
if box_format in "xywh":
# layout: (x0, y0, w, h)
bboxes1 = deepcopy(bboxes1)
bboxes2 = deepcopy(bboxes2)
bboxes1[:, 2] = bboxes1[:, 0] + bboxes1[:, 2]
bboxes1[:, 3] = bboxes1[:, 1] + bboxes1[:, 3]
bboxes2[:, 2] = bboxes2[:, 0] + bboxes2[:, 2]
bboxes2[:, 3] = bboxes2[:, 1] + bboxes2[:, 3]
elif box_format not in "x0y0x1y1":
raise (TrackEvalException("box_format %s is not implemented" % box_format))
# layout: (x0, y0, x1, y1)
min_ = np.minimum(bboxes1[:, np.newaxis, :], bboxes2[np.newaxis, :, :])
max_ = np.maximum(bboxes1[:, np.newaxis, :], bboxes2[np.newaxis, :, :])
intersection = np.maximum(min_[..., 2] - max_[..., 0], 0) * np.maximum(
min_[..., 3] - max_[..., 1], 0
)
area1 = (bboxes1[..., 2] - bboxes1[..., 0]) * (
bboxes1[..., 3] - bboxes1[..., 1]
)
if do_ioa:
ioas = np.zeros_like(intersection)
valid_mask = area1 > 0 + np.finfo("float").eps
ioas[valid_mask, :] = (
intersection[valid_mask, :] / area1[valid_mask][:, np.newaxis]
)
return ioas
else:
area2 = (bboxes2[..., 2] - bboxes2[..., 0]) * (
bboxes2[..., 3] - bboxes2[..., 1]
)
union = area1[:, np.newaxis] + area2[np.newaxis, :] - intersection
intersection[area1 <= 0 + np.finfo("float").eps, :] = 0
intersection[:, area2 <= 0 + np.finfo("float").eps] = 0
intersection[union <= 0 + np.finfo("float").eps] = 0
union[union <= 0 + np.finfo("float").eps] = 1
ious = intersection / union
return ious
@staticmethod
def _calculate_euclidean_similarity(dets1, dets2, zero_distance=2.0):
"""Calculates the euclidean distance between two sets of detections, and then converts this into a similarity
measure with values between 0 and 1 using the following formula: sim = max(0, 1 - dist/zero_distance).
The default zero_distance of 2.0, corresponds to the default used in MOT15_3D, such that a 0.5 similarity
threshold corresponds to a 1m distance threshold for TPs.
"""
dist = np.linalg.norm(dets1[:, np.newaxis] - dets2[np.newaxis, :], axis=2)
sim = np.maximum(0, 1 - dist / zero_distance)
return sim
@staticmethod
def _check_unique_ids(data, after_preproc=False):
"""Check the requirement that the tracker_ids and gt_ids are unique per timestep"""
gt_ids = data["gt_ids"]
tracker_ids = data["tk_ids"]
for t, (gt_ids_t, tracker_ids_t) in enumerate(zip(gt_ids, tracker_ids)):
if len(tracker_ids_t) > 0:
unique_ids, counts = np.unique(tracker_ids_t, return_counts=True)
if np.max(counts) != 1:
duplicate_ids = unique_ids[counts > 1]
exc_str_init = (
"Tracker predicts the same ID more than once in a single timestep "
"(seq: %s, frame: %i, ids:" % (data["seq"], t + 1)
)
exc_str = (
" ".join([exc_str_init] + [str(d) for d in duplicate_ids]) + ")"
)
if after_preproc:
exc_str_init += (
"\n Note that this error occurred after preprocessing (but not before), "
"so ids may not be as in file, and something seems wrong with preproc."
)
raise TrackEvalException(exc_str)
if len(gt_ids_t) > 0:
unique_ids, counts = np.unique(gt_ids_t, return_counts=True)
if np.max(counts) != 1:
duplicate_ids = unique_ids[counts > 1]
exc_str_init = (
"Ground-truth has the same ID more than once in a single timestep "
"(seq: %s, frame: %i, ids:" % (data["seq"], t + 1)
)
exc_str = (
" ".join([exc_str_init] + [str(d) for d in duplicate_ids]) + ")"
)
if after_preproc:
exc_str_init += (
"\n Note that this error occurred after preprocessing (but not before), "
"so ids may not be as in file, and something seems wrong with preproc."
)
raise TrackEvalException(exc_str)

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# fmt: off
# flake8: noqa
"""COCO Dataset."""
import copy
import itertools
import json
import os
from collections import defaultdict
import numpy as np
from scipy.optimize import linear_sum_assignment
from .. import _timing, utils
from ..config import get_default_dataset_config, init_config
from ..utils import TrackEvalException
from ._base_dataset import _BaseDataset
class COCO(_BaseDataset):
"""Tracking datasets in COCO format."""
def __init__(self, config=None):
"""Initialize dataset, checking that all required files are present."""
super().__init__()
# Fill non-given config values with defaults
self.config = init_config(config, get_default_dataset_config(), self.get_name())
self.gt_fol = self.config["GT_FOLDER"]
self.tracker_fol = self.config["TRACKERS_FOLDER"]
self.should_classes_combine = True
self.use_super_categories = False
self.use_mask = self.config["USE_MASK"]
self.tracker_sub_fol = self.config["TRACKER_SUB_FOLDER"]
self.output_fol = self.config["OUTPUT_FOLDER"]
if self.output_fol is None:
self.output_fol = self.tracker_fol
self.output_sub_fol = self.config["OUTPUT_SUB_FOLDER"]
if self.gt_fol.endswith(".json"):
self.gt_data = json.load(open(self.gt_fol, "r"))
else:
gt_dir_files = [
file for file in os.listdir(self.gt_fol) if file.endswith(".json")
]
if len(gt_dir_files) != 1:
raise TrackEvalException(
f"{self.gt_fol} does not contain exactly one json file."
)
with open(os.path.join(self.gt_fol, gt_dir_files[0])) as f:
self.gt_data = json.load(f)
# fill missing video ids
self._fill_video_ids_inplace(self.gt_data["annotations"])
# get sequences to eval and sequence information
self.seq_list = [
vid["name"].replace("/", "-") for vid in self.gt_data["videos"]
]
self.seq_name2seqid = {
vid["name"].replace("/", "-"): vid["id"] for vid in self.gt_data["videos"]
}
# compute mappings from videos to annotation data
self.video2gt_track, self.video2gt_image = self._compute_vid_mappings(
self.gt_data["annotations"]
)
# compute sequence lengths
self.seq_lengths = {vid["id"]: 0 for vid in self.gt_data["videos"]}
for img in self.gt_data["images"]:
self.seq_lengths[img["video_id"]] += 1
self.seq2images2timestep = self._compute_image_to_timestep_mappings()
self.seq2cls = {
vid["id"]: {
"pos_cat_ids": list(
{track["category_id"] for track in self.video2gt_track[vid["id"]]}
),
}
for vid in self.gt_data["videos"]
}
# Get classes to eval
considered_vid_ids = [self.seq_name2seqid[vid] for vid in self.seq_list]
seen_cats = set(
[
cat_id
for vid_id in considered_vid_ids
for cat_id in self.seq2cls[vid_id]["pos_cat_ids"]
]
)
# only classes with ground truth are evaluated in TAO
self.valid_classes = [
cls["name"] for cls in self.gt_data["categories"] if cls["id"] in seen_cats
]
cls_name2clsid_map = {
cls["name"]: cls["id"] for cls in self.gt_data["categories"]
}
if self.config["CLASSES_TO_EVAL"]:
self.class_list = [
cls.lower() if cls.lower() in self.valid_classes else None
for cls in self.config["CLASSES_TO_EVAL"]
]
if not all(self.class_list):
valid_cls = ", ".join(self.valid_classes)
raise TrackEvalException(
"Attempted to evaluate an invalid class. Only classes "
f"{valid_cls} are valid (classes present in ground truth"
" data)."
)
else:
self.class_list = [cls for cls in self.valid_classes]
self.cls_name2clsid = {
k: v for k, v in cls_name2clsid_map.items() if k in self.class_list
}
self.clsid2cls_name = {
v: k for k, v in cls_name2clsid_map.items() if k in self.class_list
}
# get trackers to eval
if self.config["TRACKERS_TO_EVAL"] is None:
self.tracker_list = os.listdir(self.tracker_fol)
else:
self.tracker_list = self.config["TRACKERS_TO_EVAL"]
if self.config["TRACKER_DISPLAY_NAMES"] is None:
self.tracker_to_disp = dict(zip(self.tracker_list, self.tracker_list))
elif (self.config["TRACKERS_TO_EVAL"] is not None) and (
len(self.config["TK_DISPLAY_NAMES"]) == len(self.tracker_list)
):
self.tracker_to_disp = dict(
zip(self.tracker_list, self.config["TK_DISPLAY_NAMES"])
)
else:
raise TrackEvalException(
"List of tracker files and tracker display names do not match."
)
self.tracker_data = {tracker: dict() for tracker in self.tracker_list}
for tracker in self.tracker_list:
if self.tracker_sub_fol.endswith(".json"):
with open(os.path.join(self.tracker_sub_fol)) as f:
curr_data = json.load(f)
else:
tr_dir = os.path.join(self.tracker_fol, tracker, self.tracker_sub_fol)
tr_dir_files = [
file for file in os.listdir(tr_dir) if file.endswith(".json")
]
if len(tr_dir_files) != 1:
raise TrackEvalException(
f"{tr_dir} does not contain exactly one json file."
)
with open(os.path.join(tr_dir, tr_dir_files[0])) as f:
curr_data = json.load(f)
# limit detections if MAX_DETECTIONS > 0
if self.config["MAX_DETECTIONS"]:
curr_data = self._limit_dets_per_image(curr_data)
# fill missing video ids
self._fill_video_ids_inplace(curr_data)
# make track ids unique over whole evaluation set
self._make_tk_ids_unique(curr_data)
# get tracker sequence information
curr_vids2tracks, curr_vids2images = self._compute_vid_mappings(curr_data)
self.tracker_data[tracker]["vids_to_tracks"] = curr_vids2tracks
self.tracker_data[tracker]["vids_to_images"] = curr_vids2images
def get_display_name(self, tracker):
return self.tracker_to_disp[tracker]
def _load_raw_file(self, tracker, seq, is_gt):
"""Load a file (gt or tracker) in the TAO format
If is_gt, this returns a dict which contains the fields:
[gt_ids, gt_classes]:
list (for each timestep) of 1D NDArrays (for each det).
[gt_dets]: list (for each timestep) of lists of detections.
if not is_gt, this returns a dict which contains the fields:
[tk_ids, tk_classes]:
list (for each timestep) of 1D NDArrays (for each det).
[tk_dets]: list (for each timestep) of lists of detections.
"""
seq_id = self.seq_name2seqid[seq]
# file location
if is_gt:
imgs = self.video2gt_image[seq_id]
else:
imgs = self.tracker_data[tracker]["vids_to_images"][seq_id]
# convert data to required format
num_timesteps = self.seq_lengths[seq_id]
img_to_timestep = self.seq2images2timestep[seq_id]
data_keys = ["ids", "classes", "dets"]
# if not is_gt:
# data_keys += ["tk_confidences"]
raw_data = {key: [None] * num_timesteps for key in data_keys}
for img in imgs:
# some tracker data contains images without any ground truth info,
# these are ignored
if img["id"] not in img_to_timestep:
continue
t = img_to_timestep[img["id"]]
anns = img["annotations"]
tk_str = utils.get_track_id_str(anns[0])
if self.use_mask:
# When using mask, extract segmentation data
raw_data["dets"][t] = [ann.get("segmentation") for ann in anns]
else:
# When using bbox, extract bbox data
raw_data["dets"][t] = np.atleast_2d([ann["bbox"] for ann in anns]).astype(
float
)
raw_data["ids"][t] = np.atleast_1d([ann[tk_str] for ann in anns]).astype(
int
)
raw_data["classes"][t] = np.atleast_1d(
[ann["category_id"] for ann in anns]
).astype(int)
# if not is_gt:
# raw_data["tk_confidences"][t] = np.atleast_1d(
# [ann["score"] for ann in anns]
# ).astype(float)
for t, d in enumerate(raw_data["dets"]):
if d is None:
raw_data["dets"][t] = np.empty((0, 4)).astype(float)
raw_data["ids"][t] = np.empty(0).astype(int)
raw_data["classes"][t] = np.empty(0).astype(int)
# if not is_gt:
# raw_data["tk_confidences"][t] = np.empty(0)
if is_gt:
key_map = {"ids": "gt_ids", "classes": "gt_classes", "dets": "gt_dets"}
else:
key_map = {"ids": "tk_ids", "classes": "tk_classes", "dets": "tk_dets"}
for k, v in key_map.items():
raw_data[v] = raw_data.pop(k)
raw_data["num_timesteps"] = num_timesteps
raw_data["seq"] = seq
return raw_data
def get_preprocessed_seq_data_thr(self, raw_data, cls, assignment=None):
"""Preprocess data for a single sequence for a single class.
Inputs:
raw_data: dict containing the data for the sequence already
read in by get_raw_seq_data().
cls: class to be evaluated.
Outputs:
gt_ids:
list (for each timestep) of ids of GT tracks
tk_ids:
list (for each timestep) of ids of predicted tracks (all for TP
matching (Det + AssocA))
tk_overlap_ids:
list (for each timestep) of ids of predicted tracks that overlap
with GTs
tk_dets:
list (for each timestep) of lists of detections that
corresponding to the tk_ids
tk_classes:
list (for each timestep) of lists of classes that corresponding
to the tk_ids
tk_confidences:
list (for each timestep) of lists of classes that corresponding
to the tk_ids
sim_scores:
similarity score between gt_ids and tk_ids.
"""
if cls != "all":
cls_id = self.cls_name2clsid[cls]
data_keys = [
"gt_ids",
"tk_ids",
"gt_id_map",
"tk_id_map",
"gt_dets",
"gt_classes",
"gt_class_name",
"tk_overlap_classes",
"tk_overlap_ids",
"tk_class_eval_tk_ids",
"tk_dets",
"tk_classes",
# "tk_confidences",
"tk_exh_ids",
"sim_scores",
]
data = {key: [None] * raw_data["num_timesteps"] for key in data_keys}
unique_gt_ids = []
unique_tk_ids = []
num_gt_dets = 0
num_tk_cls_dets = 0
num_tk_overlap_dets = 0
overlap_ious_thr = 0.5
loc_and_asso_tk_ids = []
exh_class_tk_ids = []
for t in range(raw_data["num_timesteps"]):
# only extract relevant dets for this class for preproc and eval
if cls == "all":
gt_class_mask = np.ones_like(raw_data["gt_classes"][t]).astype(bool)
else:
gt_class_mask = np.atleast_1d(
raw_data["gt_classes"][t] == cls_id
).astype(bool)
# select GT that is not in the evaluating classes
if assignment is not None and assignment:
all_gt_ids = list(assignment[t].keys())
gt_ids_in = raw_data["gt_ids"][t][gt_class_mask]
gt_ids_out = set(all_gt_ids) - set(gt_ids_in)
tk_ids_out = set([assignment[t][key] for key in list(gt_ids_out)])
# compute overlapped tracks and add their ids to overlap_tk_ids
sim_scores = raw_data["similarity_scores"]
overlap_ids_masks = (sim_scores[t][gt_class_mask] >= overlap_ious_thr).any(
axis=0
)
overlap_tk_ids_t = raw_data["tk_ids"][t][overlap_ids_masks]
if assignment is not None and assignment:
data["tk_overlap_ids"][t] = list(set(overlap_tk_ids_t) - tk_ids_out)
else:
data["tk_overlap_ids"][t] = list(set(overlap_tk_ids_t))
loc_and_asso_tk_ids += data["tk_overlap_ids"][t]
data["tk_exh_ids"][t] = []
if cls == "all":
continue
# add the track ids of exclusive annotated class to exh_class_tk_ids
tk_exh_mask = np.atleast_1d(raw_data["tk_classes"][t] == cls_id)
tk_exh_mask = tk_exh_mask.astype(bool)
exh_class_tk_ids_t = raw_data["tk_ids"][t][tk_exh_mask]
exh_class_tk_ids.append(exh_class_tk_ids_t)
data["tk_exh_ids"][t] = exh_class_tk_ids_t
# remove tk_ids that has been assigned to GT belongs to other classes.
loc_and_asso_tk_ids = list(set(loc_and_asso_tk_ids))
# remove all unwanted unmatched tracker detections
for t in range(raw_data["num_timesteps"]):
# add gt to the data
if cls == "all":
gt_class_mask = np.ones_like(raw_data["gt_classes"][t]).astype(bool)
else:
gt_class_mask = np.atleast_1d(
raw_data["gt_classes"][t] == cls_id
).astype(bool)
data["gt_classes"][t] = cls_id
data["gt_class_name"][t] = cls
gt_ids = raw_data["gt_ids"][t][gt_class_mask]
if self.use_mask:
gt_dets = [raw_data['gt_dets'][t][ind] for ind in range(len(gt_class_mask)) if gt_class_mask[ind]]
else:
gt_dets = raw_data["gt_dets"][t][gt_class_mask]
data["gt_ids"][t] = gt_ids
data["gt_dets"][t] = gt_dets
# filter pred and only keep those that highly overlap with GTs
tk_mask = np.isin(
raw_data["tk_ids"][t], np.array(loc_and_asso_tk_ids), assume_unique=True
)
tk_overlap_mask = np.isin(
raw_data["tk_ids"][t],
np.array(data["tk_overlap_ids"][t]),
assume_unique=True,
)
tk_ids = raw_data["tk_ids"][t][tk_mask]
if self.use_mask:
tk_dets = [raw_data['tk_dets'][t][ind] for ind in range(len(tk_mask)) if
tk_mask[ind]]
else:
tk_dets = raw_data["tk_dets"][t][tk_mask]
tracker_classes = raw_data["tk_classes"][t][tk_mask]
# add overlap classes for computing the FP for Cls term
tracker_overlap_classes = raw_data["tk_classes"][t][tk_overlap_mask]
# tracker_confidences = raw_data["tk_confidences"][t][tk_mask]
sim_scores_masked = sim_scores[t][gt_class_mask, :][:, tk_mask]
# add filtered prediction to the data
data["tk_classes"][t] = tracker_classes
data["tk_overlap_classes"][t] = tracker_overlap_classes
data["tk_ids"][t] = tk_ids
data["tk_dets"][t] = tk_dets
# data["tk_confidences"][t] = tracker_confidences
data["sim_scores"][t] = sim_scores_masked
data["tk_class_eval_tk_ids"][t] = set(
list(data["tk_overlap_ids"][t]) + list(data["tk_exh_ids"][t])
)
# count total number of detections
unique_gt_ids += list(np.unique(data["gt_ids"][t]))
# the unique track ids are for association.
unique_tk_ids += list(np.unique(data["tk_ids"][t]))
num_tk_overlap_dets += len(data["tk_overlap_ids"][t])
num_tk_cls_dets += len(data["tk_class_eval_tk_ids"][t])
num_gt_dets += len(data["gt_ids"][t])
# re-label IDs such that there are no empty IDs
if len(unique_gt_ids) > 0:
unique_gt_ids = np.unique(unique_gt_ids)
gt_id_map = np.nan * np.ones((np.max(unique_gt_ids) + 1))
gt_id_map[unique_gt_ids] = np.arange(len(unique_gt_ids))
data["gt_id_map"] = {}
for gt_id in unique_gt_ids:
new_gt_id = gt_id_map[gt_id].astype(int)
data["gt_id_map"][new_gt_id] = gt_id
for t in range(raw_data["num_timesteps"]):
if len(data["gt_ids"][t]) > 0:
data["gt_ids"][t] = gt_id_map[data["gt_ids"][t]].astype(int)
if len(unique_tk_ids) > 0:
unique_tk_ids = np.unique(unique_tk_ids)
tk_id_map = np.nan * np.ones((np.max(unique_tk_ids) + 1))
tk_id_map[unique_tk_ids] = np.arange(len(unique_tk_ids))
data["tk_id_map"] = {}
for track_id in unique_tk_ids:
new_track_id = tk_id_map[track_id].astype(int)
data["tk_id_map"][new_track_id] = track_id
for t in range(raw_data["num_timesteps"]):
if len(data["tk_ids"][t]) > 0:
data["tk_ids"][t] = tk_id_map[data["tk_ids"][t]].astype(int)
if len(data["tk_overlap_ids"][t]) > 0:
data["tk_overlap_ids"][t] = tk_id_map[
data["tk_overlap_ids"][t]
].astype(int)
# record overview statistics.
data["num_tk_cls_dets"] = num_tk_cls_dets
data["num_tk_overlap_dets"] = num_tk_overlap_dets
data["num_gt_dets"] = num_gt_dets
data["num_tk_ids"] = len(unique_tk_ids)
data["num_gt_ids"] = len(unique_gt_ids)
data["num_timesteps"] = raw_data["num_timesteps"]
data["seq"] = raw_data["seq"]
self._check_unique_ids(data)
return data
@_timing.time
def get_preprocessed_seq_data(
self, raw_data, cls, assignment=None, thresholds=[50, 75]
):
"""Preprocess data for a single sequence for a single class."""
data = {}
if thresholds is None:
thresholds = [50, 75]
elif isinstance(thresholds, int):
thresholds = [thresholds]
for thr in thresholds:
assignment_thr = None
if assignment is not None:
assignment_thr = assignment[thr]
data[thr] = self.get_preprocessed_seq_data_thr(
raw_data, cls, assignment_thr
)
return data
def _calculate_similarities(self, gt_dets_t, tk_dets_t):
"""Compute similarity scores."""
if self.use_mask:
similarity_scores = self._calculate_mask_ious(gt_dets_t, tk_dets_t, is_encoded=True, do_ioa=False)
else:
similarity_scores = self._calculate_box_ious(gt_dets_t, tk_dets_t)
return similarity_scores
def _compute_vid_mappings(self, annotations):
"""Computes mappings from videos to corresponding tracks and images."""
vids_to_tracks = {}
vids_to_imgs = {}
vid_ids = [vid["id"] for vid in self.gt_data["videos"]]
# compute an mapping from image IDs to images
images = {}
for image in self.gt_data["images"]:
images[image["id"]] = image
tk_str = utils.get_track_id_str(annotations[0])
for ann in annotations:
ann["area"] = ann["bbox"][2] * ann["bbox"][3]
vid = ann["video_id"]
if ann["video_id"] not in vids_to_tracks.keys():
vids_to_tracks[ann["video_id"]] = list()
if ann["video_id"] not in vids_to_imgs.keys():
vids_to_imgs[ann["video_id"]] = list()
# fill in vids_to_tracks
tid = ann[tk_str]
exist_tids = [track["id"] for track in vids_to_tracks[vid]]
try:
index1 = exist_tids.index(tid)
except ValueError:
index1 = -1
if tid not in exist_tids:
curr_track = {
"id": tid,
"category_id": ann["category_id"],
"video_id": vid,
"annotations": [ann],
}
vids_to_tracks[vid].append(curr_track)
else:
vids_to_tracks[vid][index1]["annotations"].append(ann)
# fill in vids_to_imgs
img_id = ann["image_id"]
exist_img_ids = [img["id"] for img in vids_to_imgs[vid]]
try:
index2 = exist_img_ids.index(img_id)
except ValueError:
index2 = -1
if index2 == -1:
curr_img = {"id": img_id, "annotations": [ann]}
vids_to_imgs[vid].append(curr_img)
else:
vids_to_imgs[vid][index2]["annotations"].append(ann)
# sort annotations by frame index and compute track area
for vid, tracks in vids_to_tracks.items():
for track in tracks:
track["annotations"] = sorted(
track["annotations"],
key=lambda x: images[x["image_id"]]["frame_id"],
)
# compute average area
track["area"] = sum(x["area"] for x in track["annotations"]) / len(
track["annotations"]
)
# ensure all videos are present
for vid_id in vid_ids:
if vid_id not in vids_to_tracks.keys():
vids_to_tracks[vid_id] = []
if vid_id not in vids_to_imgs.keys():
vids_to_imgs[vid_id] = []
return vids_to_tracks, vids_to_imgs
def _compute_image_to_timestep_mappings(self):
"""Computes a mapping from images to timestep in sequence."""
images = {}
for image in self.gt_data["images"]:
images[image["id"]] = image
seq_to_imgs_to_timestep = {vid["id"]: dict() for vid in self.gt_data["videos"]}
for vid in seq_to_imgs_to_timestep:
curr_imgs = [img["id"] for img in self.video2gt_image[vid]]
curr_imgs = sorted(curr_imgs, key=lambda x: images[x]["frame_id"])
seq_to_imgs_to_timestep[vid] = {
curr_imgs[i]: i for i in range(len(curr_imgs))
}
return seq_to_imgs_to_timestep
def _limit_dets_per_image(self, annotations):
"""Limits the number of detections for each image.
Adapted from https://github.com/TAO-Dataset/.
"""
max_dets = self.config["MAX_DETECTIONS"]
img_ann = defaultdict(list)
for ann in annotations:
img_ann[ann["image_id"]].append(ann)
for img_id, _anns in img_ann.items():
if len(_anns) <= max_dets:
continue
_anns = sorted(_anns, key=lambda x: x["score"], reverse=True)
img_ann[img_id] = _anns[:max_dets]
return [ann for anns in img_ann.values() for ann in anns]
def _fill_video_ids_inplace(self, annotations):
"""Fills in missing video IDs inplace.
Adapted from https://github.com/TAO-Dataset/.
"""
missing_video_id = [x for x in annotations if "video_id" not in x]
if missing_video_id:
image_id_to_video_id = {
x["id"]: x["video_id"] for x in self.gt_data["images"]
}
for x in missing_video_id:
x["video_id"] = image_id_to_video_id[x["image_id"]]
@staticmethod
def _make_tk_ids_unique(annotations):
"""Makes track IDs unqiue over the whole annotation set.
Adapted from https://github.com/TAO-Dataset/.
"""
track_id_videos = {}
track_ids_to_update = set()
max_track_id = 0
tk_str = utils.get_track_id_str(annotations[0])
for ann in annotations:
t = int(ann[tk_str])
if t not in track_id_videos:
track_id_videos[t] = ann["video_id"]
if ann["video_id"] != track_id_videos[t]:
# track id is assigned to multiple videos
track_ids_to_update.add(t)
max_track_id = max(max_track_id, t)
if track_ids_to_update:
print("true")
next_id = itertools.count(max_track_id + 1)
new_tk_ids = defaultdict(lambda: next(next_id))
for ann in annotations:
t = ann[tk_str]
v = ann["video_id"]
if t in track_ids_to_update:
ann[tk_str] = new_tk_ids[t, v]
return len(track_ids_to_update)

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# fmt: off
# flake8: noqa
"""TAO Dataset."""
import copy
import itertools
import json
import os
from collections import defaultdict
import numpy as np
from .. import _timing
from ..config import get_default_dataset_config, init_config
from ..utils import TrackEvalException
from ._base_dataset import _BaseDataset
class TAO(_BaseDataset):
"""Dataset class for TAO tracking"""
def __init__(self, config=None):
"""Initialize dataset, checking that all required files are present."""
super().__init__()
# Fill non-given config values with defaults
self.config = init_config(config, get_default_dataset_config(), self.get_name())
self.gt_fol = self.config["GT_FOLDER"]
self.tracker_fol = self.config["TRACKERS_FOLDER"]
self.should_classes_combine = True
self.use_super_categories = False
self.use_mask = self.config["USE_MASK"]
self.tracker_sub_fol = self.config["TRACKER_SUB_FOLDER"]
self.output_fol = self.config["OUTPUT_FOLDER"]
if self.output_fol is None:
self.output_fol = self.tracker_fol
self.output_sub_fol = self.config["OUTPUT_SUB_FOLDER"]
if self.gt_fol.endswith(".json"):
self.gt_data = json.load(open(self.gt_fol, "r"))
else:
gt_dir_files = [
file for file in os.listdir(self.gt_fol) if file.endswith(".json")
]
if len(gt_dir_files) != 1:
raise TrackEvalException(
f"{self.gt_fol} does not contain exactly one json file."
)
with open(os.path.join(self.gt_fol, gt_dir_files[0])) as f:
self.gt_data = json.load(f)
# merge categories marked with a merged tag in TAO dataset
self._merge_categories(self.gt_data["annotations"] + self.gt_data["tracks"])
# get sequences to eval and sequence information
self.seq_list = [
vid["name"].replace("/", "-") for vid in self.gt_data["videos"]
]
self.seq_name2seqid = {
vid["name"].replace("/", "-"): vid["id"] for vid in self.gt_data["videos"]
}
# compute mappings from videos to annotation data
self.video2gt_track, self.video2gt_image = self._compute_vid_mappings(
self.gt_data["annotations"]
)
# compute sequence lengths
self.seq_lengths = {vid["id"]: 0 for vid in self.gt_data["videos"]}
for img in self.gt_data["images"]:
self.seq_lengths[img["video_id"]] += 1
self.seq2images2timestep = self._compute_image_to_timestep_mappings()
self.seq2cls = {
vid["id"]: {
"pos_cat_ids": list(
{track["category_id"] for track in self.video2gt_track[vid["id"]]}
),
"neg_cat_ids": vid["neg_category_ids"],
"not_exh_labeled_cat_ids": vid["not_exhaustive_category_ids"],
}
for vid in self.gt_data["videos"]
}
# Get classes to eval
considered_vid_ids = [self.seq_name2seqid[vid] for vid in self.seq_list]
seen_cats = set(
[
cat_id
for vid_id in considered_vid_ids
for cat_id in self.seq2cls[vid_id]["pos_cat_ids"]
]
)
# only classes with ground truth are evaluated in TAO
self.valid_classes = [
cls["name"] for cls in self.gt_data["categories"] if cls["id"] in seen_cats
]
cls_name2clsid_map = {
cls["name"]: cls["id"] for cls in self.gt_data["categories"]
}
if self.config["CLASSES_TO_EVAL"]:
self.class_list = [
cls.lower() if cls.lower() in self.valid_classes else None
for cls in self.config["CLASSES_TO_EVAL"]
]
if not all(self.class_list):
valid_cls = ", ".join(self.valid_classes)
raise TrackEvalException(
"Attempted to evaluate an invalid class. Only classes "
f"{valid_cls} are valid (classes present in ground truth"
" data)."
)
else:
self.class_list = [cls for cls in self.valid_classes]
self.cls_name2clsid = {
k: v for k, v in cls_name2clsid_map.items() if k in self.class_list
}
self.clsid2cls_name = {
v: k for k, v in cls_name2clsid_map.items() if k in self.class_list
}
# get trackers to eval
print(self.config["TRACKERS_TO_EVAL"] )
if self.config["TRACKERS_TO_EVAL"] is None:
self.tracker_list = os.listdir(self.tracker_fol)
else:
self.tracker_list = self.config["TRACKERS_TO_EVAL"]
if self.config["TRACKER_DISPLAY_NAMES"] is None:
self.tracker_to_disp = dict(zip(self.tracker_list, self.tracker_list))
elif (self.config["TRACKERS_TO_EVAL"] is not None) and (
len(self.config["TK_DISPLAY_NAMES"]) == len(self.tracker_list)
):
self.tracker_to_disp = dict(
zip(self.tracker_list, self.config["TK_DISPLAY_NAMES"])
)
else:
raise TrackEvalException(
"List of tracker files and tracker display names do not match."
)
self.tracker_data = {tracker: dict() for tracker in self.tracker_list}
for tracker in self.tracker_list:
if self.tracker_sub_fol.endswith(".json"):
with open(os.path.join(self.tracker_sub_fol)) as f:
curr_data = json.load(f)
else:
tr_dir = os.path.join(self.tracker_fol, tracker, self.tracker_sub_fol)
tr_dir_files = [
file for file in os.listdir(tr_dir) if file.endswith(".json")
]
if len(tr_dir_files) != 1:
raise TrackEvalException(
f"{tr_dir} does not contain exactly one json file."
)
with open(os.path.join(tr_dir, tr_dir_files[0])) as f:
curr_data = json.load(f)
# limit detections if MAX_DETECTIONS > 0
if self.config["MAX_DETECTIONS"]:
curr_data = self._limit_dets_per_image(curr_data)
# fill missing video ids
self._fill_video_ids_inplace(curr_data)
# make track ids unique over whole evaluation set
self._make_tk_ids_unique(curr_data)
# merge categories marked with a merged tag in TAO dataset
self._merge_categories(curr_data)
# get tracker sequence information
curr_vids2tracks, curr_vids2images = self._compute_vid_mappings(curr_data)
self.tracker_data[tracker]["vids_to_tracks"] = curr_vids2tracks
self.tracker_data[tracker]["vids_to_images"] = curr_vids2images
def get_display_name(self, tracker):
return self.tracker_to_disp[tracker]
def _load_raw_file(self, tracker, seq, is_gt):
"""Load a file (gt or tracker) in the TAO format
If is_gt, this returns a dict which contains the fields:
[gt_ids, gt_classes]:
list (for each timestep) of 1D NDArrays (for each det).
[gt_dets]: list (for each timestep) of lists of detections.
if not is_gt, this returns a dict which contains the fields:
[tk_ids, tk_classes, tk_confidences]:
list (for each timestep) of 1D NDArrays (for each det).
[tk_dets]: list (for each timestep) of lists of detections.
"""
seq_id = self.seq_name2seqid[seq]
# file location
if is_gt:
imgs = self.video2gt_image[seq_id]
else:
imgs = self.tracker_data[tracker]["vids_to_images"][seq_id]
# convert data to required format
num_timesteps = self.seq_lengths[seq_id]
img_to_timestep = self.seq2images2timestep[seq_id]
data_keys = ["ids", "classes", "dets"]
if not is_gt:
data_keys += ["tk_confidences"]
raw_data = {key: [None] * num_timesteps for key in data_keys}
for img in imgs:
# some tracker data contains images without any ground truth info,
# these are ignored
if img["id"] not in img_to_timestep:
continue
t = img_to_timestep[img["id"]]
anns = img["annotations"]
if self.use_mask:
# When using mask, extract segmentation data
raw_data["dets"][t] = [ann.get("segmentation") for ann in anns]
else:
# When using bbox, extract bbox data
raw_data["dets"][t] = np.atleast_2d([ann["bbox"] for ann in anns]).astype(
float
)
raw_data["ids"][t] = np.atleast_1d(
[ann["track_id"] for ann in anns]
).astype(int)
raw_data["classes"][t] = np.atleast_1d(
[ann["category_id"] for ann in anns]
).astype(int)
if not is_gt:
raw_data["tk_confidences"][t] = np.atleast_1d(
[ann["score"] for ann in anns]
).astype(float)
for t, d in enumerate(raw_data["dets"]):
if d is None:
raw_data["dets"][t] = np.empty((0, 4)).astype(float)
raw_data["ids"][t] = np.empty(0).astype(int)
raw_data["classes"][t] = np.empty(0).astype(int)
if not is_gt:
raw_data["tk_confidences"][t] = np.empty(0)
if is_gt:
key_map = {"ids": "gt_ids", "classes": "gt_classes", "dets": "gt_dets"}
else:
key_map = {"ids": "tk_ids", "classes": "tk_classes", "dets": "tk_dets"}
for k, v in key_map.items():
raw_data[v] = raw_data.pop(k)
raw_data["num_timesteps"] = num_timesteps
raw_data["neg_cat_ids"] = self.seq2cls[seq_id]["neg_cat_ids"]
raw_data["not_exh_labeled_cls"] = self.seq2cls[seq_id][
"not_exh_labeled_cat_ids"
]
raw_data["seq"] = seq
return raw_data
def get_preprocessed_seq_data_thr(self, raw_data, cls, assignment=None):
"""Preprocess data for a single sequence for a single class.
Inputs:
raw_data: dict containing the data for the sequence already
read in by get_raw_seq_data().
cls: class to be evaluated.
Outputs:
gt_ids:
list (for each timestep) of ids of GT tracks
tk_ids:
list (for each timestep) of ids of predicted tracks (all for TP
matching (Det + AssocA))
tk_overlap_ids:
list (for each timestep) of ids of predicted tracks that overlap
with GTs
tk_neg_ids:
list (for each timestep) of ids of predicted tracks that with
the class id on the negative list for the current sequence.
tk_exh_ids:
list (for each timestep) of ids of predicted tracks that do not
overlap with existing GTs but have the class id on the
exhaustive annotated class list for the current sequence.
tk_dets:
list (for each timestep) of lists of detections that
corresponding to the tk_ids
tk_classes:
list (for each timestep) of lists of classes that corresponding
to the tk_ids
tk_confidences:
list (for each timestep) of lists of classes that corresponding
to the tk_ids
sim_scores:
similarity score between gt_ids and tk_ids.
"""
if cls != "all":
cls_id = self.cls_name2clsid[cls]
data_keys = [
"gt_ids",
"tk_ids",
"gt_id_map",
"tk_id_map",
"gt_dets",
"gt_classes",
"gt_class_name",
"tk_overlap_classes",
"tk_overlap_ids",
"tk_neg_ids",
"tk_exh_ids",
"tk_class_eval_tk_ids",
"tk_dets",
"tk_classes",
"tk_confidences",
"sim_scores",
]
data = {key: [None] * raw_data["num_timesteps"] for key in data_keys}
unique_gt_ids = []
unique_tk_ids = []
num_gt_dets = 0
num_tk_cls_dets = 0
num_tk_overlap_dets = 0
overlap_ious_thr = 0.5
loc_and_asso_tk_ids = []
for t in range(raw_data["num_timesteps"]):
# only extract relevant dets for this class for preproc and eval
if cls == "all":
gt_class_mask = np.ones_like(raw_data["gt_classes"][t]).astype(bool)
else:
gt_class_mask = np.atleast_1d(
raw_data["gt_classes"][t] == cls_id
).astype(bool)
# select GT that is not in the evaluating classes
if assignment is not None and assignment:
all_gt_ids = list(assignment[t].keys())
gt_ids_in = raw_data["gt_ids"][t][gt_class_mask]
gt_ids_out = set(all_gt_ids) - set(gt_ids_in)
tk_ids_out = set([assignment[t][key] for key in list(gt_ids_out)])
# compute overlapped tracks and add their ids to overlap_tk_ids
sim_scores = raw_data["similarity_scores"]
overlap_ids_masks = (sim_scores[t][gt_class_mask] >= overlap_ious_thr).any(
axis=0
)
overlap_tk_ids_t = raw_data["tk_ids"][t][overlap_ids_masks]
if assignment is not None and assignment:
data["tk_overlap_ids"][t] = list(set(overlap_tk_ids_t) - tk_ids_out)
else:
data["tk_overlap_ids"][t] = list(set(overlap_tk_ids_t))
loc_and_asso_tk_ids += data["tk_overlap_ids"][t]
data["tk_exh_ids"][t] = []
data["tk_neg_ids"][t] = []
if cls == "all":
continue
# remove tk_ids that has been assigned to GT belongs to other classes.
loc_and_asso_tk_ids = list(set(loc_and_asso_tk_ids))
# remove all unwanted unmatched tracker detections
for t in range(raw_data["num_timesteps"]):
# add gt to the data
if cls == "all":
gt_class_mask = np.ones_like(raw_data["gt_classes"][t]).astype(bool)
else:
gt_class_mask = np.atleast_1d(
raw_data["gt_classes"][t] == cls_id
).astype(bool)
data["gt_classes"][t] = cls_id
data["gt_class_name"][t] = cls
gt_ids = raw_data["gt_ids"][t][gt_class_mask]
if self.use_mask:
gt_dets = [raw_data['gt_dets'][t][ind] for ind in range(len(gt_class_mask)) if gt_class_mask[ind]]
else:
gt_dets = raw_data["gt_dets"][t][gt_class_mask]
data["gt_ids"][t] = gt_ids
data["gt_dets"][t] = gt_dets
# filter pred and only keep those that highly overlap with GTs
tk_mask = np.isin(
raw_data["tk_ids"][t], np.array(loc_and_asso_tk_ids), assume_unique=True
)
tk_overlap_mask = np.isin(
raw_data["tk_ids"][t],
np.array(data["tk_overlap_ids"][t]),
assume_unique=True,
)
tk_ids = raw_data["tk_ids"][t][tk_mask]
if self.use_mask:
tk_dets = [raw_data['tk_dets'][t][ind] for ind in range(len(tk_mask)) if
tk_mask[ind]]
else:
tk_dets = raw_data["tk_dets"][t][tk_mask]
tracker_classes = raw_data["tk_classes"][t][tk_mask]
# add overlap classes for computing the FP for Cls term
tracker_overlap_classes = raw_data["tk_classes"][t][tk_overlap_mask]
tracker_confidences = raw_data["tk_confidences"][t][tk_mask]
sim_scores_masked = sim_scores[t][gt_class_mask, :][:, tk_mask]
# add filtered prediction to the data
data["tk_classes"][t] = tracker_classes
data["tk_overlap_classes"][t] = tracker_overlap_classes
data["tk_ids"][t] = tk_ids
data["tk_dets"][t] = tk_dets
data["tk_confidences"][t] = tracker_confidences
data["sim_scores"][t] = sim_scores_masked
data["tk_class_eval_tk_ids"][t] = set(
list(data["tk_overlap_ids"][t])
+ list(data["tk_neg_ids"][t])
+ list(data["tk_exh_ids"][t])
)
# count total number of detections
unique_gt_ids += list(np.unique(data["gt_ids"][t]))
# the unique track ids are for association.
unique_tk_ids += list(np.unique(data["tk_ids"][t]))
num_tk_overlap_dets += len(data["tk_overlap_ids"][t])
num_tk_cls_dets += len(data["tk_class_eval_tk_ids"][t])
num_gt_dets += len(data["gt_ids"][t])
# re-label IDs such that there are no empty IDs
if len(unique_gt_ids) > 0:
unique_gt_ids = np.unique(unique_gt_ids)
gt_id_map = np.nan * np.ones((np.max(unique_gt_ids) + 1))
gt_id_map[unique_gt_ids] = np.arange(len(unique_gt_ids))
data["gt_id_map"] = {}
for gt_id in unique_gt_ids:
new_gt_id = gt_id_map[gt_id].astype(int)
data["gt_id_map"][new_gt_id] = gt_id
for t in range(raw_data["num_timesteps"]):
if len(data["gt_ids"][t]) > 0:
data["gt_ids"][t] = gt_id_map[data["gt_ids"][t]].astype(int)
if len(unique_tk_ids) > 0:
unique_tk_ids = np.unique(unique_tk_ids)
tk_id_map = np.nan * np.ones((np.max(unique_tk_ids) + 1))
tk_id_map[unique_tk_ids] = np.arange(len(unique_tk_ids))
data["tk_id_map"] = {}
for track_id in unique_tk_ids:
new_track_id = tk_id_map[track_id].astype(int)
data["tk_id_map"][new_track_id] = track_id
for t in range(raw_data["num_timesteps"]):
if len(data["tk_ids"][t]) > 0:
data["tk_ids"][t] = tk_id_map[data["tk_ids"][t]].astype(int)
if len(data["tk_overlap_ids"][t]) > 0:
data["tk_overlap_ids"][t] = tk_id_map[
data["tk_overlap_ids"][t]
].astype(int)
# record overview statistics.
data["num_tk_cls_dets"] = num_tk_cls_dets
data["num_tk_overlap_dets"] = num_tk_overlap_dets
data["num_gt_dets"] = num_gt_dets
data["num_tk_ids"] = len(unique_tk_ids)
data["num_gt_ids"] = len(unique_gt_ids)
data["num_timesteps"] = raw_data["num_timesteps"]
data["seq"] = raw_data["seq"]
self._check_unique_ids(data)
return data
@_timing.time
def get_preprocessed_seq_data(
self, raw_data, cls, assignment=None, thresholds=[50, 75]
):
"""Preprocess data for a single sequence for a single class."""
data = {}
if thresholds is None:
thresholds = [50]
elif isinstance(thresholds, int):
thresholds = [thresholds]
for thr in thresholds:
assignment_thr = None
if assignment is not None:
assignment_thr = assignment[thr]
data[thr] = self.get_preprocessed_seq_data_thr(
raw_data, cls, assignment_thr
)
return data
def _calculate_similarities(self, gt_dets_t, tk_dets_t):
"""Compute similarity scores."""
if self.use_mask:
similarity_scores = self._calculate_mask_ious(gt_dets_t, tk_dets_t, is_encoded=True, do_ioa=False)
else:
similarity_scores = self._calculate_box_ious(gt_dets_t, tk_dets_t)
return similarity_scores
def _merge_categories(self, annotations):
"""Merges categories with a merged tag.
Adapted from https://github.com/TAO-Dataset.
"""
merge_map = {}
for category in self.gt_data["categories"]:
if "merged" in category:
for to_merge in category["merged"]:
merge_map[to_merge["id"]] = category["id"]
for ann in annotations:
ann["category_id"] = merge_map.get(ann["category_id"], ann["category_id"])
def _compute_vid_mappings(self, annotations):
"""Computes mappings from videos to corresponding tracks and images."""
vids_to_tracks = {}
vids_to_imgs = {}
vid_ids = [vid["id"] for vid in self.gt_data["videos"]]
# compute an mapping from image IDs to images
images = {}
for image in self.gt_data["images"]:
images[image["id"]] = image
for ann in annotations:
ann["area"] = ann["bbox"][2] * ann["bbox"][3]
vid = ann["video_id"]
if ann["video_id"] not in vids_to_tracks.keys():
vids_to_tracks[ann["video_id"]] = list()
if ann["video_id"] not in vids_to_imgs.keys():
vids_to_imgs[ann["video_id"]] = list()
# fill in vids_to_tracks
tid = ann["track_id"]
exist_tids = [track["id"] for track in vids_to_tracks[vid]]
try:
index1 = exist_tids.index(tid)
except ValueError:
index1 = -1
if tid not in exist_tids:
curr_track = {
"id": tid,
"category_id": ann["category_id"],
"video_id": vid,
"annotations": [ann],
}
vids_to_tracks[vid].append(curr_track)
else:
vids_to_tracks[vid][index1]["annotations"].append(ann)
# fill in vids_to_imgs
img_id = ann["image_id"]
exist_img_ids = [img["id"] for img in vids_to_imgs[vid]]
try:
index2 = exist_img_ids.index(img_id)
except ValueError:
index2 = -1
if index2 == -1:
curr_img = {"id": img_id, "annotations": [ann]}
vids_to_imgs[vid].append(curr_img)
else:
vids_to_imgs[vid][index2]["annotations"].append(ann)
# sort annotations by frame index and compute track area
for vid, tracks in vids_to_tracks.items():
for track in tracks:
track["annotations"] = sorted(
track["annotations"],
key=lambda x: images[x["image_id"]]["frame_index"],
)
# compute average area
track["area"] = sum(x["area"] for x in track["annotations"]) / len(
track["annotations"]
)
# ensure all videos are present
for vid_id in vid_ids:
if vid_id not in vids_to_tracks.keys():
vids_to_tracks[vid_id] = []
if vid_id not in vids_to_imgs.keys():
vids_to_imgs[vid_id] = []
return vids_to_tracks, vids_to_imgs
def _compute_image_to_timestep_mappings(self):
"""Computes a mapping from images to timestep in sequence."""
images = {}
for image in self.gt_data["images"]:
images[image["id"]] = image
seq_to_imgs_to_timestep = {vid["id"]: dict() for vid in self.gt_data["videos"]}
for vid in seq_to_imgs_to_timestep:
curr_imgs = [img["id"] for img in self.video2gt_image[vid]]
curr_imgs = sorted(curr_imgs, key=lambda x: images[x]["frame_index"])
seq_to_imgs_to_timestep[vid] = {
curr_imgs[i]: i for i in range(len(curr_imgs))
}
return seq_to_imgs_to_timestep
def _limit_dets_per_image(self, annotations):
"""Limits the number of detections for each image.
Adapted from https://github.com/TAO-Dataset/.
"""
max_dets = self.config["MAX_DETECTIONS"]
img_ann = defaultdict(list)
for ann in annotations:
img_ann[ann["image_id"]].append(ann)
for img_id, _anns in img_ann.items():
if len(_anns) <= max_dets:
continue
_anns = sorted(_anns, key=lambda x: x["score"], reverse=True)
img_ann[img_id] = _anns[:max_dets]
return [ann for anns in img_ann.values() for ann in anns]
def _fill_video_ids_inplace(self, annotations):
"""Fills in missing video IDs inplace.
Adapted from https://github.com/TAO-Dataset/.
"""
missing_video_id = [x for x in annotations if "video_id" not in x]
if missing_video_id:
image_id_to_video_id = {
x["id"]: x["video_id"] for x in self.gt_data["images"]
}
for x in missing_video_id:
x["video_id"] = image_id_to_video_id[x["image_id"]]
@staticmethod
def _make_tk_ids_unique(annotations):
"""Makes track IDs unqiue over the whole annotation set.
Adapted from https://github.com/TAO-Dataset/.
"""
track_id_videos = {}
track_ids_to_update = set()
max_track_id = 0
for ann in annotations:
t = ann["track_id"]
if t not in track_id_videos:
track_id_videos[t] = ann["video_id"]
if ann["video_id"] != track_id_videos[t]:
# track id is assigned to multiple videos
track_ids_to_update.add(t)
max_track_id = max(max_track_id, t)
if track_ids_to_update:
print("true")
next_id = itertools.count(max_track_id + 1)
new_tk_ids = defaultdict(lambda: next(next_id))
for ann in annotations:
t = ann["track_id"]
v = ann["video_id"]
if t in track_ids_to_update:
ann["track_id"] = new_tk_ids[t, v]
return len(track_ids_to_update)

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# fmt: off
# flake8: noqa
import copy
import os
import pickle
import time
import traceback
from functools import partial
from multiprocessing.pool import Pool
import numpy as np
from . import _timing, utils
from .config import get_default_eval_config, init_config
from .utils import TrackEvalException
class Evaluator:
"""Evaluator class for evaluating different metrics for each datasets."""
def __init__(self, config=None):
"""Initialize the evaluator with a config file."""
self.config = init_config(config, get_default_eval_config(), "Eval")
# Only run timing analysis if not run in parallel.
if self.config["TIME_PROGRESS"] and not self.config["USE_PARALLEL"]:
_timing.DO_TIMING = True
if self.config["DISPLAY_LESS_PROGRESS"]:
_timing.DISPLAY_LESS_PROGRESS = True
@_timing.time
def evaluate(self, dataset_list, metrics_list):
"""Evaluate a set of metrics on a set of datasets."""
config = self.config
metrics_list = metrics_list
metric_names = utils.validate_metrics_list(metrics_list)
dataset_names = [dataset.get_name() for dataset in dataset_list]
output_res = {}
output_msg = {}
for dataset, dname in zip(dataset_list, dataset_names):
# Get dataset info about what to evaluate
output_res[dname] = {}
output_msg[dname] = {}
tracker_list, seq_list, class_list = dataset.get_eval_info()
print(
f"\nEvaluating {len(tracker_list)} tracker(s) on "
f"{len(seq_list)} sequence(s) for {len(class_list)} class(es)"
f" on {dname} dataset using the following "
f'metrics: {", ".join(metric_names)}\n'
)
# Evaluate each tracker
for tracker in tracker_list:
try:
output_res, output_msg = self.evaluate_tracker(
tracker,
dataset,
dname,
class_list,
metrics_list,
metric_names,
seq_list,
output_res,
output_msg,
)
except Exception as err:
output_res[dname][tracker] = None
if type(err) == TrackEvalException:
output_msg[dname][tracker] = str(err)
else:
output_msg[dname][tracker] = "Unknown error occurred."
print("Tracker %s was unable to be evaluated." % tracker)
print(err)
traceback.print_exc()
if config["LOG_ON_ERROR"] is not None:
with open(config["LOG_ON_ERROR"], "a") as f:
print(dname, file=f)
print(tracker, file=f)
print(traceback.format_exc(), file=f)
print("\n\n\n", file=f)
if config["BREAK_ON_ERROR"]:
raise err
elif config["RETURN_ON_ERROR"]:
return output_res, output_msg
return output_res, output_msg
def evaluate_tracker(
self,
tracker,
dataset,
dname,
class_list,
metrics_list,
metric_names,
seq_list,
output_res,
output_msg,
):
"""Evaluate each sequence in parallel or in series."""
print("\nEvaluating %s\n" % tracker)
time_start = time.time()
config = self.config
if config["USE_PARALLEL"]:
with Pool(config["NUM_PARALLEL_CORES"]) as pool:
_eval_sequence = partial(
eval_sequence,
dataset=dataset,
tracker=tracker,
class_list=class_list,
metrics_list=metrics_list,
metric_names=metric_names,
)
results = pool.map(_eval_sequence, seq_list)
res = dict(zip(seq_list, results))
else:
res = {}
for curr_seq in sorted(seq_list):
res[curr_seq] = eval_sequence(
curr_seq, dataset, tracker, class_list, metrics_list, metric_names
)
# collecting combined cls keys (cls averaged, det averaged, super classes)
cls_keys = []
res["COMBINED_SEQ"] = {}
# combine sequences for each class
for c_cls in class_list:
res["COMBINED_SEQ"][c_cls] = {}
for metric, mname in zip(metrics_list, metric_names):
curr_res = {
seq_key: seq_value[c_cls][mname]
for seq_key, seq_value in res.items()
if seq_key != "COMBINED_SEQ"
}
# combine results over all sequences and then over all classes
res["COMBINED_SEQ"][c_cls][mname] = metric.combine_sequences(curr_res)
# combine classes
if dataset.should_classes_combine:
if config["OUTPUT_PER_SEQ_RES"]:
video_keys = res.keys()
else:
video_keys = ["COMBINED_SEQ"]
for v_key in video_keys:
cls_keys += ["average"]
res[v_key]["average"] = {}
for metric, mname in zip(metrics_list, metric_names):
cls_res = {
cls_key: cls_value[mname]
for cls_key, cls_value in res[v_key].items()
if cls_key not in cls_keys
}
res[v_key]["average"][
mname
] = metric.combine_classes_class_averaged(
cls_res, ignore_empty=True
)
# combine classes to super classes
if dataset.use_super_categories:
for cat, sub_cats in dataset.super_categories.items():
cls_keys.append(cat)
res["COMBINED_SEQ"][cat] = {}
for metric, mname in zip(metrics_list, metric_names):
cat_res = {
cls_key: cls_value[mname]
for cls_key, cls_value in res["COMBINED_SEQ"].items()
if cls_key in sub_cats
}
res["COMBINED_SEQ"][cat][
mname
] = metric.combine_classes_det_averaged(cat_res)
# Print and output results in various formats
if config["TIME_PROGRESS"]:
print(
f"\nAll sequences for {tracker} finished in"
f" {time.time() - time_start} seconds"
)
output_fol = dataset.get_output_fol(tracker)
os.makedirs(output_fol, exist_ok=True)
# take a mean of each field of each thr
if config["OUTPUT_PER_SEQ_RES"]:
all_res = copy.deepcopy(res)
summary_keys = res.keys()
else:
all_res = copy.deepcopy(res["COMBINED_SEQ"])
summary_keys = ["COMBINED_SEQ"]
thr_key_list = [50]
for s_key in summary_keys:
for metric, mname in zip(metrics_list, metric_names):
if mname != "TETA":
if s_key == "COMBINED_SEQ":
metric.print_table(
{"COMBINED_SEQ": res["COMBINED_SEQ"][cls_keys[0]][mname]},
tracker,
cls_keys[0],
)
continue
for c_cls in res[s_key].keys():
for thr in thr_key_list:
all_res[s_key][c_cls][mname][thr] = metric._summary_row(
res[s_key][c_cls][mname][thr]
)
x = (
np.array(list(all_res[s_key][c_cls]["TETA"].values()))
.astype("float")
.mean(axis=0)
)
all_res_summary = list(x.round(decimals=2).astype("str"))
all_res[s_key][c_cls][mname]["ALL"] = all_res_summary
if config["OUTPUT_SUMMARY"] and s_key == "COMBINED_SEQ":
for t in thr_key_list:
metric.print_summary_table(
all_res[s_key][cls_keys[0]][mname][t],
t,
tracker,
cls_keys[0],
)
if config["OUTPUT_TEM_RAW_DATA"]:
out_file = os.path.join(output_fol, "teta_summary_results.pth")
pickle.dump(all_res, open(out_file, "wb"))
print("Saved the TETA summary results.")
# output
output_res[dname][mname] = all_res[s_key][cls_keys[0]][mname][t]
output_msg[dname][tracker] = "Success"
return output_res, output_msg
@_timing.time
def eval_sequence(seq, dataset, tracker, class_list, metrics_list, metric_names):
"""Function for evaluating a single sequence."""
raw_data = dataset.get_raw_seq_data(tracker, seq)
seq_res = {}
if "TETA" in metric_names:
thresholds = [50]
data_all_class = dataset.get_preprocessed_seq_data(
raw_data, "all", thresholds=thresholds
)
teta = metrics_list[metric_names.index("TETA")]
assignment = teta.compute_global_assignment(data_all_class)
# create a dict to save Cls_FP for each class in different thr.
cls_fp = {
key: {
cls: np.zeros((len(np.arange(0.5, 0.99, 0.05)))) for cls in class_list
}
for key in thresholds
}
for cls in class_list:
seq_res[cls] = {}
data = dataset.get_preprocessed_seq_data(raw_data, cls, assignment, thresholds)
for metric, mname in zip(metrics_list, metric_names):
if mname == "TETA":
seq_res[cls][mname], cls_fp, _ = metric.eval_sequence(
data, cls, dataset.clsid2cls_name, cls_fp
)
else:
seq_res[cls][mname] = metric.eval_sequence(data)
if "TETA" in metric_names:
for thr in thresholds:
for cls in class_list:
seq_res[cls]["TETA"][thr]["Cls_FP"] += cls_fp[thr][cls]
return seq_res

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# fmt: off
# flake8: noqa
from .teta import TETA

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# fmt: off
# flake8: noqa
from abc import ABC, abstractmethod
import numpy as np
from .. import _timing
from ..utils import TrackEvalException
class _BaseMetric(ABC):
@abstractmethod
def __init__(self):
self.plottable = False
self.integer_fields = []
self.float_fields = []
self.array_labels = []
self.integer_array_fields = []
self.float_array_fields = []
self.fields = []
self.summary_fields = []
self.registered = False
#####################################################################
# Abstract functions for subclasses to implement
@_timing.time
@abstractmethod
def eval_sequence(self, data):
...
@abstractmethod
def combine_sequences(self, all_res):
...
@abstractmethod
def combine_classes_class_averaged(self, all_res, ignore_empty=False):
...
@abstractmethod
def combine_classes_det_averaged(self, all_res):
...
def plot_single_tracker_results(self, all_res, tracker, output_folder, cls):
"""Plot results, only valid for metrics with self.plottable."""
if self.plottable:
raise NotImplementedError(
f"plot_results is not implemented for metric {self.get_name()}"
)
else:
pass
#####################################################################
# Helper functions which are useful for all metrics:
@classmethod
def get_name(cls):
return cls.__name__
@staticmethod
def _combine_sum(all_res, field):
"""Combine sequence results via sum"""
return sum([all_res[k][field] for k in all_res.keys()])
@staticmethod
def _combine_weighted_av(all_res, field, comb_res, weight_field):
"""Combine sequence results via weighted average."""
return sum(
[all_res[k][field] * all_res[k][weight_field] for k in all_res.keys()]
) / np.maximum(1.0, comb_res[weight_field])
def print_table(self, table_res, tracker, cls):
"""Print table of results for all sequences."""
print("")
metric_name = self.get_name()
self._row_print(
[metric_name + ": " + tracker + "-" + cls] + self.summary_fields
)
for seq, results in sorted(table_res.items()):
if seq == "COMBINED_SEQ":
continue
summary_res = self._summary_row(results)
self._row_print([seq] + summary_res)
summary_res = self._summary_row(table_res["COMBINED_SEQ"])
self._row_print(["COMBINED"] + summary_res)
def _summary_row(self, results_):
vals = []
for h in self.summary_fields:
if h in self.float_array_fields:
vals.append("{0:1.5g}".format(100 * np.mean(results_[h])))
elif h in self.float_fields:
vals.append("{0:1.5g}".format(100 * float(results_[h])))
elif h in self.integer_fields:
vals.append("{0:d}".format(int(results_[h])))
else:
raise NotImplementedError(
"Summary function not implemented for this field type."
)
return vals
@staticmethod
def _row_print(*argv):
"""Print results in evenly spaced rows, with more space in first row."""
if len(argv) == 1:
argv = argv[0]
to_print = "%-35s" % argv[0]
for v in argv[1:]:
to_print += "%-10s" % str(v)
print(to_print)
def summary_results(self, table_res):
"""Return a simple summary of final results for a tracker."""
return dict(
zip(self.summary_fields, self._summary_row(table_res["COMBINED_SEQ"]),)
)
def detailed_results(self, table_res):
"""Return detailed final results for a tracker."""
# Get detailed field information
detailed_fields = self.float_fields + self.integer_fields
for h in self.float_array_fields + self.integer_array_fields:
for alpha in [int(100 * x) for x in self.array_labels]:
detailed_fields.append(h + "___" + str(alpha))
detailed_fields.append(h + "___AUC")
# Get detailed results
detailed_results = {}
for seq, res in table_res.items():
detailed_row = self._detailed_row(res)
if len(detailed_row) != len(detailed_fields):
raise TrackEvalException(
f"Field names and data have different sizes "
f"({len(detailed_row)} and {len(detailed_fields)})"
)
detailed_results[seq] = dict(zip(detailed_fields, detailed_row))
return detailed_results
def _detailed_row(self, res):
detailed_row = []
for h in self.float_fields + self.integer_fields:
detailed_row.append(res[h])
for h in self.float_array_fields + self.integer_array_fields:
for i, _ in enumerate([int(100 * x) for x in self.array_labels]):
detailed_row.append(res[h][i])
detailed_row.append(np.mean(res[h]))
return detailed_row

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# fmt: off
# flake8: noqa
"""Track Every Thing Accuracy metric."""
import numpy as np
from scipy.optimize import linear_sum_assignment
from .. import _timing
from ._base_metric import _BaseMetric
EPS = np.finfo("float").eps # epsilon
class TETA(_BaseMetric):
"""TETA metric."""
def __init__(self, exhaustive=False, config=None):
"""Initialize metric."""
super().__init__()
self.plottable = True
self.array_labels = np.arange(0.0, 0.99, 0.05)
self.cls_array_labels = np.arange(0.5, 0.99, 0.05)
self.integer_array_fields = [
"Loc_TP",
"Loc_FN",
"Loc_FP",
"Cls_TP",
"Cls_FN",
"Cls_FP",
]
self.float_array_fields = (
["TETA", "LocA", "AssocA", "ClsA"]
+ ["LocRe", "LocPr"]
+ ["AssocRe", "AssocPr"]
+ ["ClsRe", "ClsPr"]
)
self.fields = self.float_array_fields + self.integer_array_fields
self.summary_fields = self.float_array_fields
self.exhaustive = exhaustive
def compute_global_assignment(self, data_thr, alpha=0.5):
"""Compute global assignment of TP."""
res = {
thr: {t: {} for t in range(data_thr[thr]["num_timesteps"])}
for thr in data_thr
}
for thr in data_thr:
data = data_thr[thr]
# return empty result if tracker or gt sequence is empty
if data["num_tk_overlap_dets"] == 0 or data["num_gt_dets"] == 0:
return res
# global alignment score
ga_score, _, _ = self.compute_global_alignment_score(data)
# calculate scores for each timestep
for t, (gt_ids_t, tk_ids_t) in enumerate(
zip(data["gt_ids"], data["tk_ids"])
):
# get matches optimizing for TETA
amatch_rows, amatch_cols = self.compute_matches(
data, t, ga_score, gt_ids_t, tk_ids_t, alpha=alpha
)
gt_ids = [data["gt_id_map"][tid] for tid in gt_ids_t[amatch_rows[0]]]
matched_ids = [
data["tk_id_map"][tid] for tid in tk_ids_t[amatch_cols[0]]
]
res[thr][t] = dict(zip(gt_ids, matched_ids))
return res
def eval_sequence_single_thr(self, data, cls, cid2clsname, cls_fp_thr, thr):
"""Computes TETA metric for one threshold for one sequence."""
res = {}
class_info_list = []
for field in self.float_array_fields + self.integer_array_fields:
if field.startswith("Cls"):
res[field] = np.zeros(len(self.cls_array_labels), dtype=float)
else:
res[field] = np.zeros((len(self.array_labels)), dtype=float)
# return empty result if tracker or gt sequence is empty
if data["num_tk_overlap_dets"] == 0:
res["Loc_FN"] = data["num_gt_dets"] * np.ones(
(len(self.array_labels)), dtype=float
)
if self.exhaustive:
cls_fp_thr[cls] = data["num_tk_cls_dets"] * np.ones(
(len(self.cls_array_labels)), dtype=float
)
res = self._compute_final_fields(res)
return res, cls_fp_thr, class_info_list
if data["num_gt_dets"] == 0:
if self.exhaustive:
cls_fp_thr[cls] = data["num_tk_cls_dets"] * np.ones(
(len(self.cls_array_labels)), dtype=float
)
res = self._compute_final_fields(res)
return res, cls_fp_thr, class_info_list
# global alignment score
ga_score, gt_id_count, tk_id_count = self.compute_global_alignment_score(data)
matches_counts = [np.zeros_like(ga_score) for _ in self.array_labels]
# calculate scores for each timestep
for t, (gt_ids_t, tk_ids_t, tk_overlap_ids_t, tk_cls_ids_t) in enumerate(
zip(
data["gt_ids"],
data["tk_ids"],
data["tk_overlap_ids"],
data["tk_class_eval_tk_ids"],
)
):
# deal with the case that there are no gt_det/tk_det in a timestep
if len(gt_ids_t) == 0:
if self.exhaustive:
cls_fp_thr[cls] += len(tk_cls_ids_t)
continue
# get matches optimizing for TETA
amatch_rows, amatch_cols = self.compute_matches(
data, t, ga_score, gt_ids_t, tk_ids_t, list(self.array_labels)
)
# map overlap_ids to original ids.
if len(tk_overlap_ids_t) != 0:
sorter = np.argsort(tk_ids_t)
indexes = sorter[
np.searchsorted(tk_ids_t, tk_overlap_ids_t, sorter=sorter)
]
sim_t = data["sim_scores"][t][:, indexes]
fpl_candidates = tk_overlap_ids_t[(sim_t >= (thr / 100)).any(axis=0)]
fpl_candidates_ori_ids_t = np.array(
[data["tk_id_map"][tid] for tid in fpl_candidates]
)
else:
fpl_candidates_ori_ids_t = []
if self.exhaustive:
cls_fp_thr[cls] += len(tk_cls_ids_t) - len(tk_overlap_ids_t)
# calculate and accumulate basic statistics
for a, alpha in enumerate(self.array_labels):
match_row, match_col = amatch_rows[a], amatch_cols[a]
num_matches = len(match_row)
matched_ori_ids = set(
[data["tk_id_map"][tid] for tid in tk_ids_t[match_col]]
)
match_tk_cls = data["tk_classes"][t][match_col]
wrong_tk_cls = match_tk_cls[match_tk_cls != data["gt_classes"][t]]
num_class_and_det_matches = np.sum(
match_tk_cls == data["gt_classes"][t]
)
if alpha >= 0.5:
for cid in wrong_tk_cls:
if cid in cid2clsname:
cname = cid2clsname[cid]
cls_fp_thr[cname][a - 10] += 1
res["Cls_TP"][a - 10] += num_class_and_det_matches
res["Cls_FN"][a - 10] += num_matches - num_class_and_det_matches
res["Loc_TP"][a] += num_matches
res["Loc_FN"][a] += len(gt_ids_t) - num_matches
res["Loc_FP"][a] += len(set(fpl_candidates_ori_ids_t) - matched_ori_ids)
if num_matches > 0:
matches_counts[a][gt_ids_t[match_row], tk_ids_t[match_col]] += 1
# calculate AssocA, AssocRe, AssocPr
self.compute_association_scores(res, matches_counts, gt_id_count, tk_id_count)
# calculate final scores
res = self._compute_final_fields(res)
return res, cls_fp_thr, class_info_list
def compute_global_alignment_score(self, data):
"""Computes global alignment score."""
num_matches = np.zeros((data["num_gt_ids"], data["num_tk_ids"]))
gt_id_count = np.zeros((data["num_gt_ids"], 1))
tk_id_count = np.zeros((1, data["num_tk_ids"]))
# loop through each timestep and accumulate global track info.
for t, (gt_ids_t, tk_ids_t) in enumerate(zip(data["gt_ids"], data["tk_ids"])):
# count potential matches between ids in each time step
# these are normalized, weighted by match similarity
sim = data["sim_scores"][t]
sim_iou_denom = sim.sum(0, keepdims=True) + sim.sum(1, keepdims=True) - sim
sim_iou = np.zeros_like(sim)
mask = sim_iou_denom > (0 + EPS)
sim_iou[mask] = sim[mask] / sim_iou_denom[mask]
num_matches[gt_ids_t[:, None], tk_ids_t[None, :]] += sim_iou
# calculate total number of dets for each gt_id and tk_id.
gt_id_count[gt_ids_t] += 1
tk_id_count[0, tk_ids_t] += 1
# Calculate overall Jaccard alignment score between IDs
ga_score = num_matches / (gt_id_count + tk_id_count - num_matches)
return ga_score, gt_id_count, tk_id_count
def compute_matches(self, data, t, ga_score, gt_ids, tk_ids, alpha):
"""Compute matches based on alignment score."""
sim = data["sim_scores"][t]
score_mat = ga_score[gt_ids[:, None], tk_ids[None, :]] * sim
# Hungarian algorithm to find best matches
match_rows, match_cols = linear_sum_assignment(-score_mat)
if not isinstance(alpha, list):
alpha = [alpha]
alpha_match_rows, alpha_match_cols = [], []
for a in alpha:
matched_mask = sim[match_rows, match_cols] >= a - EPS
alpha_match_rows.append(match_rows[matched_mask])
alpha_match_cols.append(match_cols[matched_mask])
return alpha_match_rows, alpha_match_cols
def compute_association_scores(self, res, matches_counts, gt_id_count, tk_id_count):
"""Calculate association scores for each alpha.
First calculate scores per gt_id/tk_id combo,
and then average over the number of detections.
"""
for a, _ in enumerate(self.array_labels):
matches_count = matches_counts[a]
ass_a = matches_count / np.maximum(
1, gt_id_count + tk_id_count - matches_count
)
res["AssocA"][a] = np.sum(matches_count * ass_a) / np.maximum(
1, res["Loc_TP"][a]
)
ass_re = matches_count / np.maximum(1, gt_id_count)
res["AssocRe"][a] = np.sum(matches_count * ass_re) / np.maximum(
1, res["Loc_TP"][a]
)
ass_pr = matches_count / np.maximum(1, tk_id_count)
res["AssocPr"][a] = np.sum(matches_count * ass_pr) / np.maximum(
1, res["Loc_TP"][a]
)
@_timing.time
def eval_sequence(self, data, cls, cls_id_name_mapping, cls_fp):
"""Evaluate a single sequence across all thresholds."""
res = {}
class_info_dict = {}
for thr in data:
res[thr], cls_fp[thr], cls_info = self.eval_sequence_single_thr(
data[thr], cls, cls_id_name_mapping, cls_fp[thr], thr
)
class_info_dict[thr] = cls_info
return res, cls_fp, class_info_dict
def combine_sequences(self, all_res):
"""Combines metrics across all sequences."""
data = {}
res = {}
if all_res:
thresholds = list(list(all_res.values())[0].keys())
else:
thresholds = [50]
for thr in thresholds:
data[thr] = {}
for seq_key in all_res:
data[thr][seq_key] = all_res[seq_key][thr]
for thr in thresholds:
res[thr] = self._combine_sequences_thr(data[thr])
return res
def _combine_sequences_thr(self, all_res):
"""Combines sequences over each threshold."""
res = {}
for field in self.integer_array_fields:
res[field] = self._combine_sum(all_res, field)
for field in ["AssocRe", "AssocPr", "AssocA"]:
res[field] = self._combine_weighted_av(
all_res, field, res, weight_field="Loc_TP"
)
res = self._compute_final_fields(res)
return res
def combine_classes_class_averaged(self, all_res, ignore_empty=False):
"""Combines metrics across all classes by averaging over classes.
If 'ignore_empty' is True, then it only sums over classes
with at least one gt or predicted detection.
"""
data = {}
res = {}
if all_res:
thresholds = list(list(all_res.values())[0].keys())
else:
thresholds = [50]
for thr in thresholds:
data[thr] = {}
for cls_key in all_res:
data[thr][cls_key] = all_res[cls_key][thr]
for thr in data:
res[thr] = self._combine_classes_class_averaged_thr(
data[thr], ignore_empty=ignore_empty
)
return res
def _combine_classes_class_averaged_thr(self, all_res, ignore_empty=False):
"""Combines classes over each threshold."""
res = {}
def check_empty(val):
"""Returns True if empty."""
return not (val["Loc_TP"] + val["Loc_FN"] + val["Loc_FP"] > 0 + EPS).any()
for field in self.integer_array_fields:
if ignore_empty:
res_field = {k: v for k, v in all_res.items() if not check_empty(v)}
else:
res_field = {k: v for k, v in all_res.items()}
res[field] = self._combine_sum(res_field, field)
for field in self.float_array_fields:
if ignore_empty:
res_field = [v[field] for v in all_res.values() if not check_empty(v)]
else:
res_field = [v[field] for v in all_res.values()]
res[field] = np.mean(res_field, axis=0)
return res
def combine_classes_det_averaged(self, all_res):
"""Combines metrics across all classes by averaging over detections."""
data = {}
res = {}
if all_res:
thresholds = list(list(all_res.values())[0].keys())
else:
thresholds = [50]
for thr in thresholds:
data[thr] = {}
for cls_key in all_res:
data[thr][cls_key] = all_res[cls_key][thr]
for thr in data:
res[thr] = self._combine_classes_det_averaged_thr(data[thr])
return res
def _combine_classes_det_averaged_thr(self, all_res):
"""Combines detections over each threshold."""
res = {}
for field in self.integer_array_fields:
res[field] = self._combine_sum(all_res, field)
for field in ["AssocRe", "AssocPr", "AssocA"]:
res[field] = self._combine_weighted_av(
all_res, field, res, weight_field="Loc_TP"
)
res = self._compute_final_fields(res)
return res
@staticmethod
def _compute_final_fields(res):
"""Calculate final metric values.
This function is used both for both per-sequence calculation,
and in combining values across sequences.
"""
# LocA
res["LocRe"] = res["Loc_TP"] / np.maximum(1, res["Loc_TP"] + res["Loc_FN"])
res["LocPr"] = res["Loc_TP"] / np.maximum(1, res["Loc_TP"] + res["Loc_FP"])
res["LocA"] = res["Loc_TP"] / np.maximum(
1, res["Loc_TP"] + res["Loc_FN"] + res["Loc_FP"]
)
# ClsA
res["ClsRe"] = res["Cls_TP"] / np.maximum(1, res["Cls_TP"] + res["Cls_FN"])
res["ClsPr"] = res["Cls_TP"] / np.maximum(1, res["Cls_TP"] + res["Cls_FP"])
res["ClsA"] = res["Cls_TP"] / np.maximum(
1, res["Cls_TP"] + res["Cls_FN"] + res["Cls_FP"]
)
res["ClsRe"] = np.mean(res["ClsRe"])
res["ClsPr"] = np.mean(res["ClsPr"])
res["ClsA"] = np.mean(res["ClsA"])
res["TETA"] = (res["LocA"] + res["AssocA"] + res["ClsA"]) / 3
return res
def print_summary_table(self, thr_res, thr, tracker, cls):
"""Prints summary table of results."""
print("")
metric_name = self.get_name()
self._row_print(
[f"{metric_name}{str(thr)}: {tracker}-{cls}"] + self.summary_fields
)
self._row_print(["COMBINED"] + thr_res)

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# fmt: off
# flake8: noqa
import csv
import os
from collections import OrderedDict
def validate_metrics_list(metrics_list):
"""Get names of metric class and ensures they are unique, further checks that the fields within each metric class
do not have overlapping names.
"""
metric_names = [metric.get_name() for metric in metrics_list]
# check metric names are unique
if len(metric_names) != len(set(metric_names)):
raise TrackEvalException(
"Code being run with multiple metrics of the same name"
)
fields = []
for m in metrics_list:
fields += m.fields
# check metric fields are unique
if len(fields) != len(set(fields)):
raise TrackEvalException(
"Code being run with multiple metrics with fields of the same name"
)
return metric_names
def get_track_id_str(ann):
"""Get name of track ID in annotation."""
if "track_id" in ann:
tk_str = "track_id"
elif "instance_id" in ann:
tk_str = "instance_id"
elif "scalabel_id" in ann:
tk_str = "scalabel_id"
else:
assert False, "No track/instance ID."
return tk_str
class TrackEvalException(Exception):
"""Custom exception for catching expected errors."""
...