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https://hdl.handle.net/10316/102622
Título: | HEVC intra prediction acceleration based on texture direction and prediction unit modes reuse | Autor: | Cruz, Luis Alberto da Silva Agostini, Luciano Volcan Silva, Thaísa Leal da |
Palavras-chave: | Intra prediction; HEVC; Computational complexity; Edge orientation; Inter-levels correlation | Data: | 2014 | Projeto: | CAPES Brazilian agency, the Portuguese Instituto de Telecomunicações (IT, Portugal) and the Portuguese Govt. program Pest- OE/EEI/LA0008/2013 FCT/1909/27/2/2014/S |
Título da revista, periódico, livro ou evento: | APSIPA Transactions on Signal and Information Processing | Volume: | 3 | Número: | 1 | Resumo: | The new High Efficiency Video Coding (HEVC) standard achieves higher encoding efficiency when compared to its predecessors such as H.264/AVC. One of the factors responsible for this improvement is the new intra prediction method, which introduces a larger number of prediction directions resulting in an enhanced rate-distortion (RD) performance obtained at the cost of higher computational complexity. This paper proposes an algorithm to accelerate the intra mode decision, reducing the complexity of intra coding. The acceleration procedure takes into account the texture local directionality information and explores the correlation of intra modes across levels of the hierarchical tree structure used in HEVC. Experimental results show that the proposed algorithm provides a decrease of 39.22 and 43.88 in the HEVC intra prediction processing time on average, for allintra high efficiency (AI-HE) and low complexity (AI-LC) configurations, respectively, with a small degradation in encoding efficiency (BD-PSNR loss of 0.1 dB for AI-HE and 0.8 dB for AI-LC on average). | URI: | https://hdl.handle.net/10316/102622 | ISSN: | 2048-7703 2048-7703 |
DOI: | 10.1017/ATSIP.2014.14 | Direitos: | openAccess |
Aparece nas coleções: | I&D IT - Artigos em Revistas Internacionais FCTUC Eng.Electrotécnica - Artigos em Revistas Internacionais |
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ATSIP.2014.14.pdf | 1.04 MB | Adobe PDF | Ver/Abrir |
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