Research Of Moving Objects Segmentation In Video Sequence

The distinct feature of MPEG-4, the second generation object-basedcoding standard, is content description and coding based on video objects.So a video sequence must be segmented into a set of video objects first. Theperformance of the segmentation algorithm is crucial to the final MPEG-4coding products, so the author chooses this question for discussion.When we want to segment the objects in the video image, the analysisonly on objects region is not enough and not all useful information in thevideo image is made the most of. An algorithm based on adaptivebackground restoring subtraction is proposed. This algorithm can worksefficiently in real time when background is unknown.And for the moving background sequences, we should make the globalmotion estimation and compensation first, and then segment objects in termsof the static one. A new method of the global motion estimation is proposedin this paper, then using 8-parameter movement model for compensation.