상세정보
학술지
Edge-Preserving Reference Sample Filtering and Mode-Dependent Interpolation for Intra-Prediction
- 발행일
- 202001
- 출처
- IEEE Transactions on Circuits and Systems for Video Technology, v.30 no.1, pp.205-216
- ISSN
- 1051-8215
- 출판사
- IEEE
- 협약과제
- 18HR1900, 초고실감 미디어 서비스 실현을 위해 HEVC/3DA 대비 2배 압축을 제공하는 5세대 비디오/오디오 표준 핵심 기술 개발 및 표준화, 김휘용
- 초록
- High Efficiency Video Coding is the latest video compression standard, which achieves the best coding performance up until now. Specifically, intra prediction is a tool that removes spatial redundancy in a single frame and then a predictor is generated from its neighboring reference samples based on a specific interpolation scheme. In this paper, we propose an edge-preserving intra reference sample filtering method using a bilateral filter, which is implemented as hardware-friendly. Two parameters of the bilateral filter are modeled by block size and mean amplitude of the pixel intensity. In addition, a mode-dependent interpolation scheme is proposed, which takes the directionality of angular predictions into account. The experimental results show that a BD rate-reduction of 0.63% can be achieved for all intra configurations by combining the two methods. We also demonstrate that the subjective quality of the reconstructed frames can be improved.
- KSP 제안 키워드
- BD rate, Bilateral Filter, Block size, Coding performance, Edge-preserving, Filtering method, Hardware-friendly, Interpolation scheme, Intra prediction, Mode-dependent, Pixel intensity