Andreu Girbau

Hello! I think [CenterTrack](https://github.com/xingyizhou/CenterTrack) would be a great incorporation to the multiple object tracking.

The problem with the metrics on UA-DETRAC is that they use "ignore zones", which are not annotated, and are a source of false positives (as many cars can be detected...

I generated a [PR](https://github.com/cheind/py-motmetrics/pull/135) to integrate the ignore zones for the UA-DETRAC dataset. The main problem is the speed, as it loops over all the detections / ground truth and...

My guess is that they tested several thresholds/hyperparameters to have the best results on the test sequences. [This](https://openaccess.thecvf.com/content/CVPR2023/papers/Seidenschwarz_Simple_Cues_Lead_to_a_Strong_Multi-Object_Tracker_CVPR_2023_paper.pdf) CVPR paper seems to suggest the same in Table 3 "... since...

@Wuziyi616 's answer is the fix to the problem (maybe do a quick pull request with the change in the line).

I had the same issue (fork not working, spawn not recognizing common variables). To solve it, I did a workaround it by placing all the common variables outside \_\_main\_\_, as...