Subjective preference of spatio-temporal rate in video adaptation using multi-dimensional scalable coding

Video adaptation allows for direct manipulation of existing encoded video streams to meet new resource constraints without having to encode the video from scratch. Multi-dimensional scalable coding, such as motion-compensated subband coding (MCSBC), offers an effective and flexible representation fo...

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Vydané v:2004 International Conference on Multimedia and Expo (ICME) : June 27-30, 2004, Taipei, Taiwan Ročník 3; s. 1719 - 1722 Vol.3
Hlavní autori: Yong Wang, Shih-Fu Chang, Loui, A.C.
Médium: Konferenčný príspevok..
Jazyk:English
Vydavateľské údaje: Piscataway NJ IEEE 2004
Predmet:
Analytical models
Applied sciences
Artificial intelligence
Availability
Bandwidth
Bit rate
Computer science; control theory; systems
Exact sciences and technology
Handheld computers
Image resolution
Pattern recognition. Digital image processing. Computational geometry
PSNR
Robustness
Statistical analysis
Streaming media
Multimedia
Streaming
Statistical test
Subband decomposition
Preference
Bandwidth
Video signal
Subband
Subjective evaluation
Content analysis
ISBN:9780780386037, 0780386035
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Shrnutí:Video adaptation allows for direct manipulation of existing encoded video streams to meet new resource constraints without having to encode the video from scratch. Multi-dimensional scalable coding, such as motion-compensated subband coding (MCSBC), offers an effective and flexible representation for video adaptation. In order to develop robust criteria for selecting optimal spatio-temporal rates used in adaptation, knowledge about subjective preference of spatio-temporal rates is needed. We study the optimal temporal frame rate over a wide range of bandwidth (50 kbps to 1 Mbps) using subjective quality evaluation with 128 clips and 31 subjects. We analyze the results using statistical testing methods and investigate the dependence of optimal frame rate on user, bandwidth, and video content characteristics. Our findings indicate agreement among most users and the existence of switching bandwidths at which preferred frame rates change. Dependence of the preference on video content types is also revealed.
ISBN:9780780386037
0780386035
DOI:10.1109/ICME.2004.1394585