Multi-view codec with low-complexity encoding for Distributed Video Coding

• Tipo: Artigo em Revista Científica Internacional
• Data: 2013

Autores

Ciobanu, L (Autor) Outra; Luís Corte-Real (Autor) FEUP

Revista

Título: Multimedia Tools and Applications

Vol. 64 Nº 3

Páginas: 731-755

ISSN: 1380-7501

Editora: Springer Nature

Indexação

ISI Web of Knowledge - 1 Citação

Scopus - 1 Citação

Outras Informações

ID Authenticus: P-005-0KK

DOI: 10.1007/s11042-011-0970-3

Abstract (EN): The low-complexity encoding, as fundamental requirement of Distributed Video Coding, relies on performing the bulk of computation at decoder, including tasks as the generation of side information and particularly, inter-camera registration in the case of multi-view systems with complete-overlapped views and free motion of the cameras (e.g., video surveillance). In Ciobanu and Corte-Real (Multimedia Tools Appl 48(3):411-436, 2010) we introduced a codec-independent solution for such tasks at decoder. In this paper, we present a multi-view Wyner-Ziv codec (IWZ) designed for the architecture and scenarios from Ciobanu and Corte-Real (2010) (e.g., free motion of the cameras, no a priori knowledge of the instant camera positions, no feedback channel), based on transform domain (DCT), block-based coset coding. We aimed to achieve a compromise between the low encoder complexity and the rate-distortion performance. A detailed evaluation is presented for comparison with conventional coding (Intra 4x4 and Intra 16x16). Practical results show a better overall performance of the proposed codec at low bitrates.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 25