  This is our second-place solution for CVPR 2022 SoccerNet Tracking Challenge.
Our method mainly includes two steps: online short-term tracking using our
Cascaded Buffer-IoU (C-BIoU) Tracker, and, offline long-term tracking using
appearance feature and hierarchical clustering. At each step, online tracking
yielded HOTA scores near 90, and offline tracking further improved HOTA scores
to around 93.2.
