SKT-MOT and DyTracker: A Multiobject Tracking Dataset and a Dynamic Tracker for Speed Skating Video

Figure 8

Comparison of athlete posture changes. The horizontal axis is the time, the vertical axis is the athlete’s ID, and the four athletes are taken from the same video. Observing the figure can be obtained: in the speed skating scene (1) due to differences in the position and habits of athletes, there are apparent differences in posture among them at the same time; (2) the posture shows instantaneous invariance (i.e., high similarity of the same athlete between adjacent frames) due to motion inertia; (3) due to the clothing worn by athletes being similar, appearance color may not be as reliable.