상세정보
학술지
Fast Intermode Decision Algorithm Based on Contextual Mode and Priority Information for H.264/AVC Video Encoding System
- 발행일
- 201110
- 출처
- Optical Engineering, v.50 no.11, pp.1-12
- ISSN
- 0091-3286
- 출판사
- SPIE
- 협약과제
- 11PR5300, Beyond 스마트 TV 기술 개발, 홍진우
- 초록
- The recent H.264/AVC video coding standard provides a higher coding efficiency than previous standards. H.264/AVC achieves a bit rate saving of more than 50% with many new technologies, but it shows very heavy computational complexity. In this paper, a fast mode decision scheme for interframe coding is proposed to reduce the computational complexity for H.264/AVC video encoding system. To reduce the block mode decision complexity in interframe coding, we use the contextual information based on the co-located and neighboring macroblocks (MBs) to detect a proper MB that can be stopped early. Then, for the current MB, a priority information of the context is suggested for adding more mode types adaptively. The proposed algorithm shows the average speed-up factors of 59.11 to 77.41% for various sequences with a negligible bit increment and a minimal loss of image quality, in JM reference softwares.
- KSP 제안 키워드
- Average speed, Bit Rate, Co-located, Coding efficiency, Computational complexity, Contextual information, Decision algorithm, Decision scheme, Encoding system, Fast Mode Decision, H.264/AVC video