The comparison of top-down and bottom-up methods in multi-person pose estimation

Abstract

2D multi-person pose estimation is a process to detect all bodies in a two-dimensional picture. The main purpose of this report is to discuss the difference between top-down and bottom- up method in multi-person human pose estimation. This estimation will focus on many people in one picture. There are two popular methods in this area. The first is top-down method, which is to find people firstly and then to detect the body of each people. On the other hand, the bottom-up method is to detect body parts and then find each person. Their comparison and analyse in algorithm, speed and accuracy may help researchers to find more suitable methods when they research in human pose estimation. Generally, top-down methods have higher accuracy than bottom-up methods but have higher speed.