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| import os | |
| import numpy as np | |
| import copy | |
| import motmetrics as mm | |
| mm.lap.default_solver = 'lap' | |
| from yolox.tracking_utils.io import read_results, unzip_objs | |
| class Evaluator(object): | |
| def __init__(self, data_root, seq_name, data_type): | |
| 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] | |
| #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()))) | |
| frames = sorted(list(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 | |
| 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 | |
| def save_summary(summary, filename): | |
| import pandas as pd | |
| writer = pd.ExcelWriter(filename) | |
| summary.to_excel(writer) | |
| writer.save() |