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Efficient Hash Generation Method for Intra Block Copy Search in HEVC Screen Content Coding

Authors:
Ilseung Kim
Jechang Jeong

Keywords: Screen content coding (SCC), Hash, Intra block copy (IBC)

Abstract:
Recently, the standardization of HEVC-SCC was finalized, including a hash-based intra block copy (IBC) search scheme which brings significant coding gains to code screen content. However, the hash table generation itself creates a massive computational burden on the encoder side. In this paper, we propose a picture-wise hash generation method to reduce significantly the complexity of hash-based IBC search. Experimental results show that the proposed scheme reduces about 77% of hash generating time, which leads to 43% total IBC searching time saving in all-intra (AI) coding structures, compared with the hash-based IBC search in the HEVC-SCC test model (SCM)-8.0.

Pages: 16 to 20

Copyright: Copyright (c) IARIA, 2017

Publication date: July 23, 2017

Published in: conference

ISSN: 2519-8645

ISBN: 978-1-61208-577-7

Location: Nice, France

Dates: from July 23, 2017 to July 27, 2017