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http://dx.doi.org/10.5909/JBE.2015.20.1.57

Intra Block Copy Analysis to Improve Coding Efficiency for HEVC Screen Content Coding  

Ma, Jonghyun (Dept. of Computer Engineering, Kwangwoon University)
Ahn, Yong-Jo (Dept. of Computer Engineering, Kwangwoon University)
Sim, Donggyu (Dept. of Computer Engineering, Kwangwoon University)
Publication Information
Journal of Broadcast Engineering / v.20, no.1, 2015 , pp. 57-67 More about this Journal
Abstract
This paper describes and analyzes IBC (intra block copy) in HEVC (high efficiency video coding) SCC (screen content coding) to improve the coding efficiency of IBC. HEVC SCC reference software SCM 2 is employed to analyze the selection ratio of IBC which is newly adopted in HEVC SCC, and the tools for IBC such as the block vector prediction and block vector coding method are evaluated. Experimental results show the average IBC selection ratio is 31.08% and 0.33% in I-Slice and B-Slice, respectively. Based on this results, the coding efficiency of IBC could be improved by utilizing IBC selectively. In addition, analysis tests of block vector prediction and the block vector coding method show the current methods are not efficient to screen content videos, and the analysis results are presented to improve these methods.
Keywords
HEVC; Screen content coding; SCC; Intra block copy; IBC;
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1 R. Joshi, et al., "Screen content coding test model 2 (SCM 2)," JCTVC-R1014, 18th JCT-VC meeting, Sapporo, JP, June 2014.
2 J. Ma, et al., "Analysis of Intra block copy technology to improve screen content coding", 2014 Korean Society of Broadcast Engineers Fall Conference, Nov. 2014.
3 J. Boyce, et al., "Draft high efficiency video coding (HEVC) version 2, combined format range extensions (RExt), scalability (SHVC), and multi-view (MV-HEVC) extensions," JCTVC-R1013, 18th JCT-VC meeting, Sapporo, JP, June 2014.
4 R. Joshi, and J. Xu, "High Efficiency Video Coding (HEVC) Screen Content Coding: Draft 1," JCTVC-R1005, 18th JCT-VC meeting, Sapporo, JP, June 2014.
5 G. Bjontegaard, "Calculation of Average PSNR Differences Between RD-curves," VCEG-M33, ITU-T Video Coding Experts Group (VCEG) Meeting, Austin, TX, April 2001.
6 C. Pang, et al., "SCCE1: Test 1.1 - Intra block copy with different search areas," JCTVC-R0184, 18th JCT-VC meeting, Sapporo, JP, June 2014.
7 W. Lim, et al., “Slice-level Intra block copy enabling,” JCTVC-S0056, 19th JCT-VC meeting, Strasbourg, FR, Oct. 2014.
8 HM-15.0_RExt-8.0_SCM-2.0 (SCM-2.0), https://hevc.hhi.fraunhofer.de/svn/svn_HEVCSoftware/tags/HM-15.0+RExt-8.0+SCM-2.0
9 C. Pang, et al., "Non-SCCE1: Combination of JCTVC-R0185 and JCTVC-R0203," JCTVC-R0309, 18th JCT-VC meeting, Sapporo, JP, June 2014.
10 C. Pang, et al., "SCCE1: Test 3.6 - Block vector coding for Intra block copy," JCTVC-R0186, 18th JCT-VC meeting, Sapporo, JP, June 2014.
11 ITU-T Q6/16 and ISO/IEC JTC1/SC29/WG11 document N14175, "Joint Call for Proposals for Coding of Screen Content," San Jose, USA, Jan. 2014.
12 J. Chen, et al., "Description of screen content coding technology proposal by Qualcomm," JCTVC-Q0031, 17th JCT-VC meeting, Valencia, ES, March 2014.
13 High Efficiency Video Coding, Rec. ITU-T H.265 and ISO/IEC 23008-2, Jan. 2013.
14 H. Yu, et al.,, "Common conditions for screen content coding tests," JCTVC-R1015, 18th JCT-VC meeting, Sapporo, JP, June 2014.