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http://dx.doi.org/10.6109/jkiice.2010.14.10.2254

Modification of the integer transform in H.264/AVC for lossless compression  

Yoo, Hoon (상명대학교 디지털미디어학부)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.14, no.10, 2010 , pp. 2254-2260 More about this Journal
Abstract
This papers describes modification of the integer transform used in H.264/AVC in order to efficiently apply to lossless compression. The previous reversible integer transform is not efficient for lossless compression due to large dynamic range of the transform coefficients. To reduce the problem, efficient and reversible integer transforms are proposed. The modified transforms are designed based on the lifting scheme for fast transforms. This paper introduces signal flow graphs for the proposed fast transforms and provides corresponding experimental results. The results indicate that the proposed modified reversible integer transform are superior to the previous transform in terms of lossless compression efficiency.
Keywords
Reversible integer transform; H.264/AVC; lossless compression; lifting scheme;
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