A method of measuring the key sizes of a human 3D mesh model was presented. In the proposed method, human model
postures were adjusted according to the measuring reference plane, measuring direction and measuring points. Then the
skeleton of the model was extracted through the gradient rapid descent algorithm of the radial base function. What
follows was to locate the joints and set their freedom and active ranges. Then, the surface peaks were bonded to the
joints through flexible models to implement human animation. In this way, the standing and sitting poses were obtained.
After automatic means of body characteristic points location had been studied, the points and plane were extracted to
locate the measuring points precisely. Experiments were carried out on a man respectively and their key sizes were