Abstract
In this paper, we study the foreground object extraction, the trajectory extraction, the trajectory combination optimization and other key technologies of the surveillance video abstract generation technology. Put forward a kind of improved algorithm, through the pre-processing based on Focus Stacking, foreground object extraction of the foreground object shadow removal, the trajectory synthesis optimization. As a result, the foreground extraction accuracy rate was increased by 2.78%; because of shadow removal of the foreground object, the collision rate of the foreground object in the synthesized video is reduced by 15.77%; The use of Semi-Transparent Handling Collision (STHC) makes the trajectory of the foreground object is not interrupted, the video frame information is not lose and the compression rate is increased by about 10%. The algorithm is applied in this paper, and the optimization effect is observed through the whole system test. As a result, the clarity of the synthesized video is increased, the integrity of the video’s information is enhanced, and the compression rate of the video is improved.
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