Down-Sized decoding of H.264/AVC with low decoding complexity

Luong Pham Van, Hoyoung Lee, Jaehwan Kim, B. Jeon
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Abstract

In this paper, we propose a method for down-sized decoding of H.264/AVC with low decoding complexity. The method extracts the DC values of blocks in reconstructed pictures without full decoding. The DC values are divided by 4 to make the down-sized pictures of reconstructed frames. For intra-coded blocks, the intra prediction mode of a block and DC values of neighboring blocks are used to obtain DC value of the block. The motion compensation (MC) is modified to obtain DC value of an inter-coded block by referring to DC values of reference pictures. Experimental results show that the decoding complexity can be reduced up to 77% while maintaining the acceptable subjective quality for down-sized images.
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H.264/AVC压缩解码,解码复杂度低
本文提出了一种低解码复杂度的H.264/AVC压缩解码方法。该方法在不完全解码的情况下提取重构图像中块的DC值。将DC值除以4,得到重构帧的缩小图像。对于编码内的块,利用块内预测模式和相邻块的DC值来获得块的DC值。对运动补偿(MC)进行修改,通过参考图像的直流电数值获得编码间块的直流电数值。实验结果表明,在保持可接受的主观质量的前提下,该算法的解码复杂度可降低77%。
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