Fig. 5
From: Multiple fish tracking with an NACA airfoil model for collective behavior analysis
a Snapshots of tracking results in scene B obtained using our method. The fish parameters of nine occluded fish in the white oval in b can be estimated. The numbers in a and b are tracking IDs. c, d Space-time trajectory plot of the entire sequence of scenes A and B. e, f Gliding (blue point) and bending (red point) events of scenes A and B. In c, d, e, and f, the X and Y axes represent 2D space