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http://dx.doi.org/10.5392/JKCA.2017.17.05.001

Improved BVP Candidate Selection Algorithm for HEVC Screen Content Coding  

Kim, Yu-Seon (한밭대학교 정보통신전문대학원 멀티미디어공학과)
Lee, Si-Woong (한밭대학교 정보통신전문대학원 멀티미디어공학과)
Publication Information
The Journal of the Korea Contents Association / v.17, no.5, 2017 , pp. 1-7 More about this Journal
Abstract
Joint Collaborative Team on Video Coding (JCT-VC) of ISO/IEC MPEG and ITU-T developed the HEVC Screen Content Coding (HEVC SCC) standard as the HEVC extension for the screen content video coding. The Intra Block Copy (IBC) is the most effective tool adopted in HEVC SCC and predicts current block from already reconstructed neighboring blocks in the same picture. To reduce the amount of data in BV (Block Vector) to be transmitted, a BV predictor (BVP) is used to generate the BV differences in the IBC BV coding. In this paper, we analyze the current BV prediction process using HEVC reference software SCM-2.0 and SCM-4.0. Based on the analysis results, we propose an improved BVP candidate selection algorithm by adding a search process for adjacent BVs in addition to the existing spatial BVP candidates. Experimental results show that the BD-rate reduction of our proposed improvements ranges from 0.2% to 1%.
Keywords
HEVC; Screen Content Coding; Intra Block Copy; BVP;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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