File size: 7,413 Bytes
483de47 |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 |
# ------------------------------------------------------------------------
# Copyright (c) 2022 megvii-research. All Rights Reserved.
# ------------------------------------------------------------------------
# Modified from Deformable DETR (https://github.com/fundamentalvision/Deformable-DETR)
# Copyright (c) 2020 SenseTime. All Rights Reserved.
# ------------------------------------------------------------------------
# Modified from DETR (https://github.com/facebookresearch/detr)
# Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved
# ------------------------------------------------------------------------
import os
import numpy as np
import copy
import motmetrics as mm
mm.lap.default_solver = 'lap'
import os
from typing import Dict
import numpy as np
import logging
def read_results(filename, data_type: str, is_gt=False, is_ignore=False):
if data_type in ('mot', 'lab'):
read_fun = read_mot_results
else:
raise ValueError('Unknown data type: {}'.format(data_type))
return read_fun(filename, is_gt, is_ignore)
# def read_mot_results(filename, is_gt, is_ignore):
# results_dict = dict()
# if os.path.isfile(filename):
# with open(filename, 'r') as f:
# for line in f.readlines():
# linelist = line.split(',')
# if len(linelist) < 7:
# continue
# fid = int(linelist[0])
# if fid < 1:
# continue
# results_dict.setdefault(fid, list())
# if is_gt:
# mark = int(float(linelist[6]))
# if mark == 0 :
# continue
# score = 1
# elif is_ignore:
# score = 1
# else:
# score = float(linelist[6])
# tlwh = tuple(map(float, linelist[2:6]))
# target_id = int(float(linelist[1]))
# results_dict[fid].append((tlwh, target_id, score))
# return results_dict
def read_mot_results(filename, is_gt, is_ignore):
valid_labels = {1}
ignore_labels = {0, 2, 7, 8, 12}
results_dict = dict()
if os.path.isfile(filename):
with open(filename, 'r') as f:
for line in f.readlines():
linelist = line.split(',')
if len(linelist) < 7:
continue
fid = int(linelist[0])
if fid < 1:
continue
results_dict.setdefault(fid, list())
if is_gt:
if 'MOT16-' in filename or 'MOT17-' in filename:
label = int(float(linelist[7]))
mark = int(float(linelist[6]))
if mark == 0 or label not in valid_labels:
continue
score = 1
elif is_ignore:
if 'MOT16-' in filename or 'MOT17-' in filename:
label = int(float(linelist[7]))
vis_ratio = float(linelist[8])
if label not in ignore_labels and vis_ratio >= 0:
continue
elif 'MOT15' in filename:
label = int(float(linelist[6]))
if label not in ignore_labels:
continue
else:
continue
score = 1
else:
score = float(linelist[6])
tlwh = tuple(map(float, linelist[2:6]))
target_id = int(linelist[1])
results_dict[fid].append((tlwh, target_id, score))
return results_dict
def unzip_objs(objs):
if len(objs) > 0:
tlwhs, ids, scores = zip(*objs)
else:
tlwhs, ids, scores = [], [], []
tlwhs = np.asarray(tlwhs, dtype=float).reshape(-1, 4)
return tlwhs, ids, scores
class Evaluator(object):
def __init__(self, data_root, seq_name, data_type='mot'):
self.data_root = data_root
self.seq_name = seq_name
self.data_type = data_type
self.load_annotations()
self.reset_accumulator()
def load_annotations(self):
assert self.data_type == 'mot'
gt_filename = os.path.join(self.data_root, self.seq_name, 'gt', 'gt.txt')
self.gt_frame_dict = read_results(gt_filename, self.data_type, is_gt=True)
self.gt_ignore_frame_dict = read_results(gt_filename, self.data_type, is_ignore=True)
def reset_accumulator(self):
self.acc = mm.MOTAccumulator(auto_id=True)
def eval_frame(self, frame_id, trk_tlwhs, trk_ids, rtn_events=False):
# results
trk_tlwhs = np.copy(trk_tlwhs)
trk_ids = np.copy(trk_ids)
# gts
gt_objs = self.gt_frame_dict.get(frame_id, [])
gt_tlwhs, gt_ids = unzip_objs(gt_objs)[:2]
# ignore boxes
ignore_objs = self.gt_ignore_frame_dict.get(frame_id, [])
ignore_tlwhs = unzip_objs(ignore_objs)[0]
# remove ignored results
keep = np.ones(len(trk_tlwhs), dtype=bool)
iou_distance = mm.distances.iou_matrix(ignore_tlwhs, trk_tlwhs, max_iou=0.5)
if len(iou_distance) > 0:
match_is, match_js = mm.lap.linear_sum_assignment(iou_distance)
match_is, match_js = map(lambda a: np.asarray(a, dtype=int), [match_is, match_js])
match_ious = iou_distance[match_is, match_js]
match_js = np.asarray(match_js, dtype=int)
match_js = match_js[np.logical_not(np.isnan(match_ious))]
keep[match_js] = False
trk_tlwhs = trk_tlwhs[keep]
trk_ids = trk_ids[keep]
# get distance matrix
iou_distance = mm.distances.iou_matrix(gt_tlwhs, trk_tlwhs, max_iou=0.5)
# acc
self.acc.update(gt_ids, trk_ids, iou_distance)
if rtn_events and iou_distance.size > 0 and hasattr(self.acc, 'last_mot_events'):
events = self.acc.last_mot_events # only supported by https://github.com/longcw/py-motmetrics
else:
events = None
return events
def eval_file(self, filename):
self.reset_accumulator()
result_frame_dict = read_results(filename, self.data_type, is_gt=False)
frames = sorted(list(set(self.gt_frame_dict.keys()) | set(result_frame_dict.keys())))
for frame_id in frames:
trk_objs = result_frame_dict.get(frame_id, [])
trk_tlwhs, trk_ids = unzip_objs(trk_objs)[:2]
self.eval_frame(frame_id, trk_tlwhs, trk_ids, rtn_events=False)
return self.acc
@staticmethod
def get_summary(accs, names, metrics=('mota', 'num_switches', 'idp', 'idr', 'idf1', 'precision', 'recall')):
names = copy.deepcopy(names)
if metrics is None:
metrics = mm.metrics.motchallenge_metrics
metrics = copy.deepcopy(metrics)
mh = mm.metrics.create()
summary = mh.compute_many(
accs,
metrics=metrics,
names=names,
generate_overall=True
)
return summary
@staticmethod
def save_summary(summary, filename):
import pandas as pd
writer = pd.ExcelWriter(filename)
summary.to_excel(writer)
writer.save() |