Abstract:
According to the problems of slow segmentation in the video object segmentation, a video object segmentation method was proposed based on LDOF optical flow algorithm. Firstly, the pixel optical flow in times of t to
t+1 were calculated out by the method of LDOF(Large Displace Optical Flow, LDOF). Then, we calculate the directional derivative of
N neighboring pixels to obtain the information of the video's rough outline. By using the Gaussian mixture model to build the foreground and background models and using the algorithm of scan line to calculate out the video object that has more precise contours. Finally, the video object is segmented by using the GrabCut algorithm. The experimental results show that the algorithm is effective to improve the speed of video object segmentation.