A Distributed-source-coding Based Robust Spatio-temporal Scalable Video Codec
نویسندگان
چکیده
A video coding paradigm called PRISM (Power-efficient, Robust, hIgh compression, Syndrome-based Multimedia coding) built on distributed source coding principles has been recently proposed in [1]. In this paper, we study a scalable version of PRISM which addresses both spatial and temporal scalability. The proposed codec inherits the main attributes of the PRISM architecture, namely increased robustness to channel losses and more flexible sharing of computational complexity between encoder and decoder, while adding scalability as an additional feature. In this paper, we show the efficacy of enhancing a standards-compliant base layer codec (H.264/AVC) with a PRISM refinement bit stream, resulting in an overall robust spatio-temporal scalable video codec that is backward-compatible with the existing standards-based baseline codec.
منابع مشابه
Robust wireless video multicast based on a distributed source coding approach
In this paper, we present a scheme for robust scalable video multicast based on distributed source coding principles. Unlike prediction-based coders, like MPEG-x and H.26x, the proposed framework is designed specifically for lossy wireless channels and directly addresses the problem of drift due to packet losses. The proposed solution is based on recently proposed PRISM (power efficient robust ...
متن کاملTitle : Scalable Video Coding in Networked Environment
State‐of‐the‐art coders have been optimised over years according to the needs of the broadcasting industry. There are however key applications of coding technology (transmission, surveillance, etc.) whose challenges and requirements substantially differ from broadcasting. In this document an efficient approach jointly optimises the bit allocation between the wavelet‐ based scal...
متن کاملHighly Scalable Differential JPEG-2000 Wavelet Video Codec for Internet Video Streaming
Highly scalable wavelet video codec is proposed for Internet video streaming applications based on the simplified JPEG-2000 compression core. Most of existing video solutions are utilizing fixed temporal grouping structure, resulting in quality degradation due to structural mismatch with inherent motion and scene change. Thus, by adopting the adaptive frame grouping based on the fast scene chan...
متن کاملInternet Video - Streaming
The heterogeneous structure of the Internet is a great obstacle for establishing real-time video services. Scalable video codecs, generating bit-streams decodable at di erent rates, have been proposed to address the heterogeneity problem. In this paper, we will review standardcompliant and non-compliant codec architectures for Internet video-ondemand. For compression based on the H.263 standard...
متن کاملSpatio-temporal-SNR scalable wavelet coding with motion-compensated DCT base-layer architectures
It has been demonstrated recently that 3-D wavelet coding with motion-compensated temporal filtering (MCTF) provides a wide range of spatio-temporal-SNR scalability with state-of-the-art coding performance. However, the coding system is very different from the already standardized motion-compensated DCT (MC-DCT) video coders such as MPEG-2, MPEG-4, or H.26L. Nonetheless, the market acceptance o...
متن کامل