Tracking system and tracking method of three-dimensional object

The invention discloses a tracking system of a three-dimensional object and a tracking method thereof. The tracking system comprises a key frame forming unit, a video frame external parameter analysisunit and a tracking judgment unit. The key frame forming unit analyzes data of a template frame and data of a video frame to form key frame data which comprises external parameters of a key frame. The video frame external parameter analysis unit is in communication connection with the key frame forming unit and can obtain the external parameters of the key frame and calculate the external parameters of the video parameter according to the external parameters of the key frame. The tracking judgment unit is in communication connection with the video frame external parameter analysis unit, and video frame analysis module obtains the data of the key frame and the data of the video frame and then calculates a corresponding posture of a tracked object in the video frame. 本发明公开了三维物体的跟踪系统及其跟踪方法，其中所述三维物体的跟踪系统包括关键帧形成单元、视频帧