상세정보
학술대회
A New Rate Control Method for Hierarchical Video Coding in HEVC
- 발행일
- 201206
- 출처
- International Symposium on Broadband Multimedia Systems and Broadcasting (BMSB) 2012, pp.1-4
- 협약과제
- 11PR1700, 무안경 다시점 3D지원 UHDTV 방송 기술 개발, 김진웅
- 초록
- In this paper, we propose a new rate control (RC) algorithm for hierarchical video coding of high efficiency video coding (HEVC). To achieve a constant target bitrate transmission, an effective bit allocation method is first introduced, which assigns the number of target bits to each intra-period, group of picture, and frame by considering the hierarchical structure. A quantization parameter (QP) is determined by using the Cauchy distribution based rate-quantization (RQ) model. We further introduce a novel method to estimate the parameters of the RQ model precisely by employing the linear rate model. Experimental results show that the proposed RC algorithm controls the bitrate accurately with negligible degradation of PSNR. © 2012 IEEE.
- KSP 제안 키워드
- Allocation method, Effective bit, Quantization parameters, Rate Control, Rate model, bit allocation, cauchy distribution, control method, group of pictures(GOP), hierarchical structure, hierarchical video coding