H.266/VVC fast intra prediction using Sobel edge features

Abstract Versatile video coding is the next‐generation video coding standard. Compared with the previous high efficiency video coding standard, versatile video coding reduces 30% or more bitrate but requires significantly higher encoding complexity. This Letter proposes a fast intra prediction algor...

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Autores principales:	Shih‐Hsuan Yang, Sheng‐Jung Hsiao
Formato:	article
Lenguaje:	EN
Publicado:	Wiley 2021
Materias:	Electrical engineering. Electronics. Nuclear engineering TK1-9971
Acceso en línea:	https://doaj.org/article/51255bc2c4b249b8806ad091181d68e9
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id	oai:doaj.org-article:51255bc2c4b249b8806ad091181d68e9
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spelling	oai:doaj.org-article:51255bc2c4b249b8806ad091181d68e92021-11-16T10:18:22ZH.266/VVC fast intra prediction using Sobel edge features1350-911X0013-519410.1049/ell2.12011https://doaj.org/article/51255bc2c4b249b8806ad091181d68e92021-01-01T00:00:00Zhttps://doi.org/10.1049/ell2.12011https://doaj.org/toc/0013-5194https://doaj.org/toc/1350-911XAbstract Versatile video coding is the next‐generation video coding standard. Compared with the previous high efficiency video coding standard, versatile video coding reduces 30% or more bitrate but requires significantly higher encoding complexity. This Letter proposes a fast intra prediction algorithm for partition type selection and mode decision of versatile video coding. The Sobel operator is employed to extract the gradient intensity and edge direction of coding blocks. Early skip conditions for partition types are developed based on the dominant edge indicated by block gradients. The intra prediction modes are further restricted to the directions close to the edge orientation of a coding block. Experimental results indicate that the proposed method in the Intra‐only configuration saves 34.66% of the encoding time with a slight (0.61%) increase in Bjøntegaard delta bit rate, which achieves the best tradeoff between acceleration and quality among all the investigated methods.Shih‐Hsuan YangSheng‐Jung HsiaoWileyarticleElectrical engineering. Electronics. Nuclear engineeringTK1-9971ENElectronics Letters, Vol 57, Iss 1, Pp 11-13 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Electrical engineering. Electronics. Nuclear engineering TK1-9971
spellingShingle	Electrical engineering. Electronics. Nuclear engineering TK1-9971 Shih‐Hsuan Yang Sheng‐Jung Hsiao H.266/VVC fast intra prediction using Sobel edge features
description	Abstract Versatile video coding is the next‐generation video coding standard. Compared with the previous high efficiency video coding standard, versatile video coding reduces 30% or more bitrate but requires significantly higher encoding complexity. This Letter proposes a fast intra prediction algorithm for partition type selection and mode decision of versatile video coding. The Sobel operator is employed to extract the gradient intensity and edge direction of coding blocks. Early skip conditions for partition types are developed based on the dominant edge indicated by block gradients. The intra prediction modes are further restricted to the directions close to the edge orientation of a coding block. Experimental results indicate that the proposed method in the Intra‐only configuration saves 34.66% of the encoding time with a slight (0.61%) increase in Bjøntegaard delta bit rate, which achieves the best tradeoff between acceleration and quality among all the investigated methods.
format	article
author	Shih‐Hsuan Yang Sheng‐Jung Hsiao
author_facet	Shih‐Hsuan Yang Sheng‐Jung Hsiao
author_sort	Shih‐Hsuan Yang
title	H.266/VVC fast intra prediction using Sobel edge features
title_short	H.266/VVC fast intra prediction using Sobel edge features
title_full	H.266/VVC fast intra prediction using Sobel edge features
title_fullStr	H.266/VVC fast intra prediction using Sobel edge features
title_full_unstemmed	H.266/VVC fast intra prediction using Sobel edge features
title_sort	h.266/vvc fast intra prediction using sobel edge features
publisher	Wiley
publishDate	2021
url	https://doaj.org/article/51255bc2c4b249b8806ad091181d68e9
work_keys_str_mv	AT shihhsuanyang h266vvcfastintrapredictionusingsobeledgefeatures AT shengjunghsiao h266vvcfastintrapredictionusingsobeledgefeatures
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H.266/VVC fast intra prediction using Sobel edge features

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