An Adaptive Systematic Lossy Error Protection Scheme for Broadcast Applications Based on Frequency Filtering and Unequal Picture Protection | Zendy

Marie Ramon | Zendy; FrançoisXavier Coudoux | Zendy; M. Gazalet | Zendy

Open Access

An Adaptive Systematic Lossy Error Protection Scheme for Broadcast Applications Based on Frequency Filtering and Unequal Picture Protection

Author(s) -

Marie Ramon,

FrançoisXavier Coudoux,

M. Gazalet

Publication year - 2008

Publication title -

international journal of digital multimedia broadcasting

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.164

H-Index - 17

eISSN - 1687-7586

pISSN - 1687-7578

DOI - 10.1155/2009/709813

Subject(s) - computer science , bitstream , lossy compression , quantization (signal processing) , video quality , real time computing , coding (social sciences) , algorithm , artificial intelligence , decoding methods , mathematics , statistics , metric (unit) , operations management , economics

Systematic lossy error protection (SLEP) is a robust error resilient mechanism based on principles of Wyner-Ziv (WZ) coding for video transmission over error-prone networks. In an SLEP scheme, the video bitstream is separated into two parts: a systematic part consisting of a video sequence transmitted without channel coding, and additional information consisting of a WZ supplementary stream. This paper presents an adaptive SLEP scheme in which the WZ stream is obtained by frequency filtering in the transform domain. Additionally, error resilience varies adaptively depending on the characteristics of compressed video. We show that the proposed SLEP architecture achieves graceful degradation of reconstructed video quality in the presence of increasing transmission errors. Moreover, it provides good performances in terms of error protection as well as reconstructed video quality if compared to solutions based on coarser quantization, while offering an interesting embedded scheme to apply digital video format conversion

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