In this paper, starting from point-point and line-line correspondence, a detailed description of the calculation of projection parameters for 2D video features and 3D model features correspondence is presented firstly. Then a detailed description of the calculation of projection parameters for 2D human video features and 3D human model features correspondence is given. At the same time, an animation example of human walking is introduced which is produced by an animation system called Video&Animation Studio. The system is designed according to the above idea.