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An Adaptive Fast Algorithm for Coding Block Mode Selection

In order to reduce encoding complexity of H.264/AVC, and improve the coding speed, an adaptive fast coding block mode selection algorithm is proposed. The threshold information is used to select the skip mode effectively and skip unnecessary block mode selection according to the information of the coded frames and the coded blocks. The optimal coding block mode for current block is adaptively selected. The experimental results show that, under the cost that bit rate increased 0.41 percent and the image peak signal to noise ratio reduced 0.034 dB in average, the encoding speed increases 50.40 percent in average.