COMPLEXITY REDUCTION OF IDCT BY USING CBP AND ADAPTIVE PRUNING IN H.264/AVC DECODER

摘要

In this paper, we propose two methods to reducerncomputational complexity of H.264/AVC decoder. Thernproposed methods utilize CBP (Coded Block Pattern)rninformation to skip inverse DCT transform andrnreconstruction processes for 8x8 blocks that have CBPrnbits being zero. Furthermore, we adaptively skip zerorncoefficients in a block to reduce unnecessary computationrnin inverse DCT transform module. Experimental resultsrnshow that the proposed method can reduce decodingrncomplexity by about 10 % with only a negligible PSNRrndrop.