Avaliaçao subjetiva de qualidade aplicada à codificaçao de vídeo escalável
Pages 146 - 153
Abstract
This paper presents a subjective video quality study of video sequences coded using the scalable extension of the H.264 standard (SVC). A group of experiments was performed to measure, primarily, the effects of transmission instability and the influence of the three scalability methods (spatial, temporal and quality) on the video quality. The definitions were based on a layered transmission system using protocols for adaptability and congestion control. To run the subjective assessment we used the ACR-HRR methodology and recommendations given by ITU-R Rec. BT.500 and ITU-T Rec. P.910. The results show that instability does not causes significant alterations on the overall video subjective quality and that the temporal scalability usually presents far lower subjective quality than spatial and quality scalabilities.
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Published In
October 2008
269 pages
ISBN:9781605581705
DOI:10.1145/1666091
Copyright © 2008 Brazilian Computer Society.
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- SBC: Brazilian Computer Society
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Association for Computing Machinery
New York, NY, United States
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Published: 26 October 2008
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WebMedia08
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- SBC
WebMedia08: 14th Brazilian Symposium on Multimedia and Web Systems
October 26 - 29, 2008
Vila Velha, Brazil
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