关键词: 视频分割, 变化检测, 差分图像, 数学形态学

Abstract: With the development of object-based video applications，the segmentation of video objects becomes one of the hotspots that people research.This paper presents a method for the fast segmentation of video objects based on the change detection.Firstly，the difference image is produced between two continuous frames，and then the moving area of the video object is obtained.The threshold is determined according to the median（MED） and absolute difference of medain（MAD） of the difference image and average of original image，and the noise is filtered.After the obtained result is processed with mathematical morphology，the video object can be extracted.Experimental results prove that this method can effectively segment the video object from the sequence with static background and the proposed method is simple，fast and accurate.

Key words: video segmentation, change detection, difference image, mathematical morphology