1-1 H.264/MPEG-4 AVC符号化における主観画質向上に関する一検討(第1部門画像・動画処理1)

概要

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In H.264 coding technology, macroblock coding mode is selected from much more candidates compared to conventional coding standards, and an appropriate mode decision introduces the successful coding performance. As for this adaptive mode selection, a simple design might degrade the coding efficiency. For instance, in an interframe coded picture, frequent selection of intra prediction modes independent on the image feature might result in degradation of subjective picture quality especially for the sequence with a global high speed motion. From this perspective, we propose an adaptive control for exploiting intra prediction mode within an interframe coded picture in order to achieve improvement of subjective picture quality while maintaining the same bit-rate.
2006-11-20