A Fast Mode Selection Algorithm Used in Video Surveillance System
Liu Hai-en · Microcomputer Information · 2010
In order to overcome the disadvantage of high computational complexity,with the analysis of video sequences mode decision in the real-time video surveillance system,a fast mode selection algorithm based on motion region and motion vectors difference of macroblock is proposed.Firstly a 16x16 macroblock is divided into four 8x8 blocks and it is classified into two types:SMB(Static Macroblock) and AMB(Active Macroblock) according the motion information of different regions.Then the proposed algorithm utilized a rule based on Coded Block Pattern(CBP) and Motion Vector Difference(MVD) to decide a minimum range of mode selection.The experimental results show that there is about 84.30% encoding time saved compared with the original H.264 reference software for the video surveillance sequences with almost no loss of video quality,and the proposed mode selection are very suitable for video surveillance compared.