Moving object detecting technique based on motion vector in H.264 coding

Considering the applications of joint realization of video compression and moving object tracking, by studying the moving information included in the motion vector of the H.264 video coding international standard and analyzing motion estimation principle, a motion vector based on moving object detecting technique was proposed, and the relationship between the motion vector and the moving object was set up. The key part of detecting algorithm is to divide moving object from background. By setting two threshes properly, the detected objects could be changed according to their moving velocity. As the disturbance of background moving eliminated by the algorithm, it can be used in some cases when the camera is moving. For motion vectors come from H.264 coding progress directly, the calculation complexity is reduced, so it is easy to realize by hardware.