Heatmaps and Part Affinity Fields (PAFs) are the output form the OpenPose. PAFs are used to connect the detected body parts for several people in a single image at the same time.
Fig.1: Input image (upper left). Heatmap of the left shoulder (upper right).
Heatmap of the left elbow (bottom left). PAF of the upper arm. (bottom right)
To run a pose estimation with the pretrained model:
$ python demo.py
Fig.2: Constructed pose estimation on picture.
Fig.3: Constructed pose estimation on video.