상세정보
학술지
A Fast Intra Skip Detection Algorithm for H.264/AVC Video Encoding
- 발행일
- 200612
- 출처
- ETRI Journal, v.28 no.6, pp.721-731
- ISSN
- 1225-6463
- 출판사
- 한국전자통신연구원 (ETRI)
- 협약과제
- 06MW1100, 임베디드 SW 기반 Smar Town 솔루션 기술 개발, 마평수
- 초록
- A fast intra skip detection algorithm based on the rate-distortion (RD) cost for an inter frame (P-slices) is proposed for H.264/AVC video encoding. In the H.264/AVC coding standard, a robust rate-distortion optimization technique is used to select the best coding mode and reference frame for each macroblock (MB). There are three types of intra predictions according to profiles. These are 16×16 and 4×4 intra predictions for luminance and an 8×8 intra prediction for chroma. For the high profile, an 8×8 intra prediction has been added for luminance. The 4×4 prediction mode has 9 prediction directions with 4 directions for 16×16 and 8×8 luma, and 8×8 chrominance. In addition to the inter mode search procedure, an intra mode search causes a significant increase in the complexity and computational load for an inter frame. To reduce the computational load of the intra mode search at the inter frame, the RD costs of the neighborhood MBs for the current MB are used and we propose an adaptive thresholding scheme for the intra skip extraction. We verified the performance of the proposed scheme through comparative analysis of experimental results using joint model reference software. The overall encoding time was reduced up to 32% for the IPPP sequence type and 35% for the IBBPBBP sequence type.
- KSP 제안 키워드
- Coding standard, Comparative analysis, Detection algorithm, Encoding time, H.264/AVC video, Inter mode, Intra prediction, Joint model, Model reference, Optimization techniques(OT), Prediction mode