Sample-adaptive-prediction for HEVC SCC intra coding with ridge estimation from spatially neighboring samples
- 주제(키워드) intra-prediction in HEVC , ridge estimation , Sample adaptive prediction
- 등재 SCOPUS
- 발행기관 SPIE
- 발행년도 2017
- URI http://www.dcollection.net/handler/ewha/000000156707
- ISBN 9781510609518
- 본문언어 영어
- Published As http://dx.doi.org/10.1117/12.2266115
초록/요약
In this paper a sample-adaptive prediction technique is proposed to yield efficient coding performance in an intracoding for screen content video coding. The sample-based prediction is to reduce spatial redundancies in neighboring samples. To this aim, the proposed technique uses a weighted linear combination of neighboring samples and applies the robust optimization technique, namely, ridge estimation to derive the weights in a decoder side. The ridge estimation uses L2 norm based regularization term, and, thus the solution is more robust to high variance samples such as in sharp edges and high color contrasts exhibited in screen content videos. It is demonstrated with the experimental results that the proposed technique provides an improved coding gain as compared to the HEVC screen content video coding reference software. © 2017 SPIE.
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