Observation-Centric SORT

1. We provide the full source code, training, evaluation scripts and pretrained weights in the folder OC_SORT to reproduce our results reported. Please read README in the folder for details.

2. We include result visualizations in OC_SORT/assets. And provide a video randomly selected from youtube in OC_SORT/video to help generate a demo video.

3. We have removed all information that can potentially leak authors' identifications from this supplementary. 