Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.21/4823
Título: Perceptually driven video error protection using a distributed source coding approach
Autor: Dias, André Seixas
Brites, Catarina
Ascenso, João Miguel Duarte
Pereira, Fernando
Palavras-chave: H.264/AVC Coding
Perceptual Classification
Error Protection
Distributed Source Coding
Data: 2014
Editora: Elsevier Science BV
Citação: DIAS, André Seixas; [et al] – Perceptually driven vídeo error protection using a distributed source coding approach. Signal Processing-Image Communication. ISSN: 0923-5965. Vol. 29, nr. 1 (2014) p. 1-22.
Resumo: In video communication systems, the video signals are typically compressed and sent to the decoder through an error-prone transmission channel that may corrupt the compressed signal, causing the degradation of the final decoded video quality. In this context, it is possible to enhance the error resilience of typical predictive video coding schemes using as inspiration principles and tools from an alternative video coding approach, the so-called Distributed Video Coding (DVC), based on the Distributed Source Coding (DSC) theory. Further improvements in the decoded video quality after error-prone transmission may also be obtained by considering the perceptual relevance of the video content, as distortions occurring in different regions of a picture have a different impact on the user's final experience. In this context, this paper proposes a Perceptually Driven Error Protection (PDEP) video coding solution that enhances the error resilience of a state-of-the-art H.264/AVC predictive video codec using DSC principles and perceptual considerations. To increase the H.264/AVC error resilience performance, the main technical novelties brought by the proposed video coding solution are: (i) design of an improved compressed domain perceptual classification mechanism; (ii) design of an improved transcoding tool for the DSC-based protection mechanism; and (iii) integration of a perceptual classification mechanism in an H.264/AVC compliant codec with a DSC-based error protection mechanism. The performance results obtained show that the proposed PDEP video codec provides a better performing alternative to traditional error protection video coding schemes, notably Forward Error Correction (FEC)-based schemes. (C) 2013 Elsevier B.V. All rights reserved.
Peer review: yes
URI: http://hdl.handle.net/10400.21/4823
DOI: 10.1016/j.image.2013.08.021
ISSN: 0923-5965
1879-2677
Aparece nas colecções:ISEL - Eng. Elect. Tel. Comp. - Artigos

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