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

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 v...

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Vydané v:Multimedia tools and applications Ročník 64; číslo 3; s. 731 - 755
Hlavní autori: Ciobanu, Lucian, Côrte-Real, Luís
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: Boston Springer US 01.06.2013
Springer
Springer Nature B.V
Predmet:
Analysis
Applied sciences
Artificial intelligence
Cameras
Channels
Codec
Codes
Coding
Coding, codes
Computer Communication Networks
Computer Science
Computer science; control theory; systems
Data Structures and Information Theory
Decoders
Digital cameras
Digital video
Encoding
Exact sciences and technology
Image coding
Information, signal and communications theory
Multimedia
Multimedia computer applications
Multimedia Information Systems
Parity
Pattern recognition. Digital image processing. Computational geometry
Signal and communications theory
Special Purpose and Application-Based Systems
Studies
Surveillance
Tasks
Telecommunications and information theory
Video compression
Wavelet transforms
Wyner–Ziv (WZ)
Coset Coding
Intra 16×16
SSIM (Structural SIMilarity)
Distributed Video Coding (DVC)
CAVLC (Context-Adaptive Variable-Length Coding)
Huffman Coding
Distributed Source Coding (DSC)
Intra 4×4
Discrete Cosine Transform (DCT)
Video coding
Block code
Wyner-Ziv (WZ)
Codec
Camera
Discrete cosine transforms
Variable length code
Multimedia
Computer vision
Huffman code
Distributed source signal
Rate distortion theory
Decoding circuit
Context aware
Distributed system
Side information
Computational complexity
Adaptive coding
Multiple view
Surveillance
Multiple channel
ISSN:1380-7501, 1573-7721
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Popis
Shrnutí: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 4×4 and Intra 16×16). Practical results show a better overall performance of the proposed codec at low bitrates.
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ISSN:1380-7501
1573-7721
DOI:10.1007/s11042-011-0970-3