Abstract: Extracting skeleton of 3D human body model is very important for animation of 3D characters. The existing algorithms are complicated or interactive. We presented a algorithm that is based on the trait of human body and golden section. Our algorithm consists of four steps:1)transformation into a low polygon model from original modcl;2) estimate the position of joint on the base of trait of human body and golden section; 3) segmentation of human body; 4) amend the position using geodesic distance. The experimental results show that our method is easier to implement and faster in computation than other methods.

Key words: Algorithm, 3D human body model, Skclcton extraction, Golden section