Subjective Quality Assessment of the Impact of Buffer Size in Fine-Grain Parallel Video Encoding
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Date
2012-12
ORCID
Advisor
Referee
Mark
Journal Title
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Volume Title
Publisher
Společnost pro radioelektronické inženýrství
Abstract
Fine-Grain parallelism is essential for real-time video encoding performance. This usually implies setting a fixed buffer size for each encoded block. The choice of this parameter is critical for both performance and hardware cost. In this paper we analyze the impact of buffer size on image subjective quality, and its relation with other encoding parameters. We explore the consequences on visual quality, when minimizing buffer size to the point of causing the discard of quantized coefficients for highest frequencies. Finally, we propose some guidelines for the choice of buffer size, that has proven to be heavily dependent, in addition to other parameters, on the type of sequence being encoded. These guidelines are useful for the design of efficient realtime encoders, both hardware and software.
Description
Citation
Radioengineering. 2012, vol. 21, č. 4, s. 1226-1235. ISSN 1210-2512
http://www.radioeng.cz/fulltexts/2012/12_04_1226_1235.pdf
http://www.radioeng.cz/fulltexts/2012/12_04_1226_1235.pdf
Document type
Peer-reviewed
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Published version
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en