PoseNet runs with either a single-pose or multi-pose detection algorithm. The single person pose detector is faster and more accurate but requires only one subject present in the image.
The output stride and input image resolution have the largest effects on accuracy/speed.
The BodyPix model can estimate which pixels in an image are part of a person, and which pixels are part of each of 24 body parts.
This demo shows the blazeface model detecting faces in a live camera feed. The demo renders a semi-transparent red box over faces