一个可配置的IP核任意逆量化变换与动态视频分辨率

2012 International Symposium on Intelligent Signal Processing and Communications Systems Pub Date : 2012-11-01 DOI:10.1109/ISPACS.2012.6473568

Chi-Chia Sun, Chun-Ying Lin, G. Jan

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引用次数: 0

摘要

本文提出了一种基于CORDIC算法的低复杂度IP核，用于图像/视频解码过程，兼容标准MPEG-4 Visual和标准H.264/AVC。这个逆离散余弦整数变换(IDCIT)可以用来支持无乘数的1-D 8点IDCT和1-D 4点/8点逆整数变换。同时，为了补偿视频压缩质量，可调整CORDIC迭代次数和补偿步长。在标准MPEG-4 Visual和H.264/AVC参考软件JM 16.1的公共软件XVID Codes 1.2.2中嵌入了这些实现，实验结果表明，在PSNR的视频压缩质量和计算复杂度之间取得了折衷。

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A configurable IP Core for arbitrary inverse quantized transforms with dynamic video resolutions

In this paper, a low-complexity IP Core based on the CORDIC algorithm is proposed for image/video decoding process in compatibility with the standard MPEG-4 Visual and the standard H.264/AVC. This, Inverse Discrete Cosine and Integer Transform (IDCIT), can be used to support multiplierless 1-D 8-point IDCT and 1-D 4-point/8-point inverse integer transforms. Meanwhile, the number for CORDIC iterations and compensation steps are adjustable in order to compensate the video compression quality. The implementations are embedded in public available software XVID Codes 1.2.2 for the standard MPEG-4 Visual and the H.264/AVC reference software JM 16.1, where the experimental results show that a trade-off between video compression quality in PSNR and computational complexity is obtained.

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2012 International Symposium on Intelligent Signal Processing and Communications Systems

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