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Erschienen in:
2012 | OriginalPaper | Buchkapitel
The Optimization of H.264 Mode Selection Algorithm
verfasst von : Hu Zhang, Lei Meng
Erschienen in: Advances in Future Computer and Control Systems
Verlag: Springer Berlin Heidelberg
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The multi-mode motion estimation algorithm of H.264 standard has the shortcoming of encoding mode complexity and large computation. In order to solve these problems, this paper proposed a fast mode selection algorithm that combined the prediction method with some mode exclusion method. This method can rule out SKIP mode and inter 16 × 16 mode in advance, and divides the rest mode into two parts according to the texture complexity, then rules out the mode contained in each section one by one according to the texture direction, at last, gets the optimal mode. Experimental results show that this method can predict up to 47% of SKIP macroblocks in advance in the case of almost no additional computation, efficiently avoids unnecessary mode selection process, and greatly reduces the encoding complexity and encoding time.