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Sample adaptive color space transform for screen content video coding

Title
Sample adaptive color space transform for screen content video coding
Authors
Kang, Je-WonKim, Woo-ShikKawamura, Kei
Ewha Authors
강제원
SCOPUS Author ID
강제원scopus
Issue Date
2017
Journal Title
SIGNAL IMAGE AND VIDEO PROCESSING
ISSN
1863-1703JCR Link1863-1711JCR Link
Citation
vol. 11, no. 3, pp. 557 - 564
Keywords
Color space transformScreen content video codingColor component analysis
Publisher
SPRINGER LONDON LTD
Indexed
SCIE; SCOPUS WOS scopus
Abstract
In this paper, an in-loop color space transform is proposed for screen content video coding to improve coding efficiency. The transform converts the color space of an input block to a better color space to improve rate-distortion performance by decorrelating among color components. Specifically, to derive the optimal color transform the principal component analysis is performed using spatially or temporally adjacent pixels in each block, and the derived transform is applied to the residual samples after intra or inter prediction. Then, rate-distortion optimization is performed to select the better color space between the original color space of the input signal and the derived one. It is demonstrated with the experimental results that the proposed method provides significant coding gains.
DOI
10.1007/s11760-016-0994-2
Appears in Collections:
엘텍공과대학 > 전자공학과 > Journal papers
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