Browse > Article
http://dx.doi.org/10.5573/ieie.2014.51.8.104

A Rough Mode Decision Algorithm for Transform Skip Mode in HEVC  

Kim, Youngjo (Department of Electrical and Electronic Engineering, Yonsei University)
Kim, Jaeseok (Department of Electrical and Electronic Engineering, Yonsei University)
Publication Information
Journal of the Institute of Electronics and Information Engineers / v.51, no.8, 2014 , pp. 104-113 More about this Journal
Abstract
The existing rough mode decision (RMD) algorithm, used in HEVC standard loses the coding efficiency and wastes encoding time when encoding using transform skip mode (TSM) because the RMD algorithm in HEVC uses a selection method that is designed for DCT, not for TSM. This paper proposes a new RMD algorithm for TSM in HEVC. Our proposed RMD algorithm enhances the coding efficiency by employing a new cost function to increase the probability of selecting the best intra prediction mode for TSM. In addition, it reduces the encoding time by skipping the encoding process of least feasible TSM based on a newly proposed threshold value. The experiment results show that the proposed method achieves coding gains of -0.3% for screen contents with a 10% reduction in encoding time compared to those of the HEVC standard.
Keywords
HEVC; Rough Mode Decision (RMD); Transform Skip Mode (TSM); intra prediction;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 B. Bross et al., "High Efficiency Video Coding (HEVC) text specification draft 10 (for FDIS & Last Call)", presented at JCTVC-L1003, JCT-VC of ISO/IEC and ITU-T, Geneva, CH, Jan. 2013.
2 Youngjo Kim, and Jaeseok Kim, "A Fast Intra Prediction Method Using Quadtree Structure and SATD in HEVC Encoder", Journal of The Institute of Electronics and Information Engineers, Vol. 51, Issue 3, pp. 129-138, 2014   과학기술학회마을   DOI
3 F. Bossen, "Common test conditions and software reference configurations", presented at JCTVC-L1100, JCT-VC of ISO/IEC and ITU-T, Geneva, CH, Jan. 2013.
4 G. Bjontegaard, "Calculation of Average PSNR Differences between RD-Curves", ITU-T SG16 Q.6 VCEG, Doc. VCEG-M33, 2001.
5 심동규, 조현호 "고효율 영상 부호회 기술 HEVC 표준 기술의 이해", 홍릉과학출판사, 1쪽-442쪽, 2014년
6 ITU-T and ISO/IEC JTC 1, "Advanced video coding for generic audiovisual services", ITU-T Recommendation H.264 and ISO/IEC 14496-10 (MPEG4-AVC), 4th ed., Sept. 2008.
7 M. Mark, A. Gabriellini, and D. Flynn, "Transform skip mode," presented at JCTVC-G575, JCT-VC of ISO/IEC and ITU-T, Geneva, CH, Nov. 2011.
8 L. Zhao, L. Zhang, S. Ma, and D. Zhao, "Fast Mode Decision Algorithm for Intra Prediction in HEVC," IEEE Visual Communications and Image Processing, pp.1-4, Tainan, Taiwan, Nov. 2011.
9 HEVC Test Model 10 "HM 10.0", https://hevc.hhi.fraunhofer.de/svn/svn_HEVCSofware/tags/HM-10.0
10 Y. Kim, D. Jun, S. Jung, and J. Choi, "A fast intra prediction method using hadamard transform in high efficiency video coding", Proc. SPIE8305, Visual Information Processing and Communication III, vol. 83050A, pp.1-10, San Francisco, Feb. 2012.
11 W. Jiang, H. Ma, and Y. Chen, "Gradient based fast mode decision algorithm for intra prediction in HEVC", Proc. Consumer Electronics, Communications and Networks (CECNet) pp.1836-1840, Hubei, China, Apr. 2012.
12 S. Yan, L. Hong, W. He and Q. Wang, "Group-based fast mode decision algorithm for intra prediction in HEVC", Proc. Signal Image Technoloy and Internet Based Systems (SITIS), pp. 225-229, Kyoto, Japan, Nov. 2012.
13 Thaisa L.da Silva, Luciano V. Agostini and Luis A. da Silva Curz, "Fast HEVC intra prediction mode decision based on EDGE direction information", 20th European Signal Processing Conference, pp.1214-1218, Bucharest, Romania, Aug. 2012.