why keypoint (2-16) is defined as limb?

[hyli2020]

Pytorch_Realtime_Multi-Person_Pose_Estimation/CocoFolder.py

Line 129 in 7c6f066

self.vec_pair = [[2,3,5,6,8,9, 11,12,0,1,1, 1,1,2, 5, 0, 0, 14,15],

Also refer to the visualization here:
https://github.com/CMU-Perceptual-Computing-Lab/openpose/blob/master/doc/output.md#pose-output-format-coco

[hyli2020]

Probably because it is implemented as in the original repo? how about remove these connections and build a new PAF matrix? I guess the results are similar. Not sure.