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http://dx.doi.org/10.5573/IEIESPC.2016.5.5.366

Linear Sub-band Decomposition-based Pre-processing for Perceptual Video Coding  

Choi, Kwang Yeon (Department of Electronic Engineering, Inha University)
Song, Byung Cheol (Department of Electronic Engineering, Inha University)
Publication Information
IEIE Transactions on Smart Processing and Computing / v.5, no.5, 2016 , pp. 366-373 More about this Journal
Abstract
This paper proposes a pre-processing algorithm to improve the coding efficiency of perceptual video coding. First, an input image is decomposed into multiple sub-bands through linear sub-band decomposition. Then, the sub-bands that have low visual sensitivity are suppressed by assigning small gains to them. Experimental results show that if the proposed algorithm is adopted for pre-processing in a High Efficiency Video Coding (HEVC) encoder, it can provide significant bit-saving effects of approximately 12% in low delay mode and 9.4% in random access mode.
Keywords
Perceptual video coding; Visual sensitivity; CODEC; Sub-band decomposition;
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