A New Algorithm for Video Object Extraction Based on Temporal Domain and Gradient Domain
一种时域和梯度域相结合的视频对象提取算法

A novel approach for video object extraction fusing temporal and gradient information is proposed.Experiments demonstrate that our method can extract the video object effectively from complex background,and can resolve the vacancy phenomenon when the foreground and background are of the same color using background eliminate method.Firstly,in the temporal domain we introduced background eliminate and adjacent frame difference method to generate elementary video object,and then we used erosion and dilation morphologic method to the video object.Secondly,in the gradient domain we detected video object's edge using Sobel operator.Associating with the video object generated in the temporal domain,we obtained the exact video object contour's edge.Finally,we applied heuristic search method to link video object contour's edge points,sequentially extracted video object.