A Selective Protection Scheme for Scalable Video Coding

Selective protection can exploit dependency coding properties to effectively perform partial protection on scalable video coding (SVC) bitstreams since protecting frames in lower scalability layers affects visual quality of the reconstructed frames in higher scalability layers. In this paper, we pro...

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Vydané v:	IEEE transactions on circuits and systems for video technology Ročník 21; číslo 11; s. 1733 - 1746
Hlavní autori:	Kim, H., Munchurl Kim
Médium:	Journal Article
Jazyk:	English
Vydavateľské údaje:	New York, NY IEEE 01.11.2011 Institute of Electrical and Electronics Engineers The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Predmet:	Applied sciences Carriages Circuits Coding Degradation Detection, estimation, filtering, equalization, prediction Encoding Exact sciences and technology Frames Graphs Image processing Image reconstruction Information, signal and communications theory Measurement Optimization Scalability Scalable video coding selective protection Signal and communications theory Signal processing Signal, noise Specifications Static VAr compensators Studies Telecommunications and information theory video protection Visual Visualization Video coding video protection Scalability Protective device Scalable video coding Specification Computational complexity Video signal processing Degradation Image quality selective protection Algorithm complexity Optimal path Acyclic graph Directed graph Damaging
ISSN:	1051-8215, 1558-2205
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Popis
Shrnutí:	Selective protection can exploit dependency coding properties to effectively perform partial protection on scalable video coding (SVC) bitstreams since protecting frames in lower scalability layers affects visual quality of the reconstructed frames in higher scalability layers. In this paper, we propose a selective protection scheme that maximizes protection effects by the minimum number of encoded frames to be protected in the SVC bitstream domain. We first model the SVC dependency coding structure as a directed acyclic graph which is characterized with an estimated visual quality value as the attribute at each node. In addition, a visual quality estimation model is proposed based on the proportions of intra-predicted and inter-predicted MBs, amounts of residues, and estimated visual quality of reference frames. The proposed selective protection scheme traverses the dependency graph to find optimal protection paths that can give the maximum visual quality degradation. Experimental results show that, compared to the existing protection schemes, the proposed selective protection scheme reduces computation complexity in the number of protected frames, the amount of protected data, and the protection time saving. The SVC file format specification supports the carriage of selectively protected bitstreams based on the concept of our selective protection in dependency coding structure of SVC.
Bibliografia:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 14 content type line 23
ISSN:	1051-8215 1558-2205
DOI:	10.1109/TCSVT.2011.2138850