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ThinkMind // VISUAL 2016, The First International Conference on Applications and Systems of Visual Paradigms // View article visual_2016_3_30_95028


Enhanced Hash-based Intra Block Copy for HEVC Screen Content Coding using Sucessive Elimination Algorithm

Authors:
Ilseung Kim
Jechang Jeong

Keywords: HEVC; Screen content coding(SCC); Intra Block copy (IBC); Hash

Abstract:
An efficient algorithm is proposed not only to reduce the computation cost of the hash-based intra block copy (IBC), but also to achieve the Bjontegaard delta bit rate (BDBR) gain for High Efficiency Video Coding standard (HEVC) screen content coding(SCC). Recently, the HEVC Screen Content Coding Draft 6 was published including several new tools. Among those, hash-based intra block copy shows the high coding gain but it has a massive computational complexity even though it is adopted as a fast algorithm for global block search for IBC mode. The proposed algorithm suggests the effective way to calculate the lower bound for rate-distortion (RD) cost when performing the hash-based IBC process and to eliminate the impossible candidates earlier. Experimental results show that about 50% on the average and up to 86.80% of the search points can be early terminated as well as 0.21% on the average BDBR saving can be achieved compared to HM-16.8+SCM-6.1.

Pages: 50 to 54

Copyright: Copyright (c) IARIA, 2016

Publication date: November 13, 2016

Published in: conference

ISSN: 2519-8645

ISBN: 978-1-61208-520-3

Location: Barcelona, Spain

Dates: from November 13, 2016 to November 17, 2016

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