Sample adaptive color space transform for screen content video coding
- 주제(키워드) Color component analysis , Color space transform , Screen content video coding
- 등재 SCIE, SCOPUS
- 발행기관 Springer-Verlag London Ltd
- 발행년도 2016
- 총서유형 Journal
- URI http://www.dcollection.net/handler/ewha/000000139566
- 본문언어 영어
- Published As http://dx.doi.org/10.1007/s11760-016-0994-2
- 저작권 이화여자대학교 논문은 저작권에 의해 보호받습니다.
초록/요약
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. © 2016 Springer-Verlag London
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