概要
話題のOpenPoseを試してみました。
論文とコード

Realtime Multi-Person 2D Pose Estimation using Part Affinity Fields
We present an approach to efficiently detect the 2D pose of multiple people
in an image. The approach uses a nonparametric representation, which we refer
to as ...

CMU-Perceptual-Computing-Lab/openpose
OpenPose: Real-time multi-person keypoint detection library for body, face, hands, and foot estimation - CMU-Perceptual-Computing-Lab/openpose
結果(オリジナル画像)

感想
各点の位置も取得できるので、足の長さなどの解析にも使えそうです。