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http://dx.doi.org/10.5909/JBE.2012.17.5.734

Secondary Residual Transform for Lossless Intra Coding in HEVC  

Kwak, Jae-Hee (DMS Lab. Dept. of Computer Engineering, Sejong University)
Lee, Yung-Lyul (DMS Lab. Dept. of Computer Engineering, Sejong University)
Publication Information
Journal of Broadcast Engineering / v.17, no.5, 2012 , pp. 734-741 More about this Journal
Abstract
A new lossless intra coding method based on residual transform is applied to the next generation video coding standard HEVC (High Efficiency Video Coding). HEVC includes a multi-directional spatial prediction method to reduce spatial redundancy by using neighboring samples as a prediction for the samples in a block of data to be encoded. In the new lossless intra coding method, the spatial prediction is performed as samplewise DPCM (Difference Pulse Code Modulation) but is implemented as block-based manner by using residual transform and secondary residual transform on the HEVC standard. Experimental results show that the new lossless intra coding method reduces the bit rate by approximately 6.45% in comparison with the lossless intra coding method previously included in the HEVC standard.
Keywords
HEVC; intra coding; lossless video coding; differential pulse code modulation (DPCM); residual transform;
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