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Proceedings Paper

Fugue: time scales of adaptation in mobile video
Author(s): Mark D. Corner; Brian D. Noble; Kimberly M. Wasserman
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Paper Abstract

Providing interactive video on hand-held, mobile devices is extremely difficult. These devices are subject to processor, memory, and power constraints, and communicate over wireless links of rapidly varying quality. Furthermore, the size of encoded video is difficult to predict, complicating the encoding task. We present Fugue, a system that copes with these challenges through a division along time scales of adaptation. Fugue is structured as three sperate controllers: transmission, video and preference. This decomposition provides adaptation along different time scales: per-packet, per-frame, and per-video. The controllers are provided at modest time and space costs compared to the cost of video encoding. We present simulations confirming the efficacy of our transmission controller, and compare our video controller to several alternatives. We find that, in situations amenable to adaptive compression, our scheme provides video quality equal to or better than the alternatives at a comparable or substantially lower computational cost. We also find that distortion, the metric commonly used to compare mobile video, under-values the contribution smooth motion makes to perceived video quality.

Paper Details

Date Published: 22 December 2000
PDF: 13 pages
Proc. SPIE 4312, Multimedia Computing and Networking 2001, (22 December 2000); doi: 10.1117/12.410915
Show Author Affiliations
Mark D. Corner, Univ. of Michigan (United States)
Brian D. Noble, Univ. of Michigan (United States)
Kimberly M. Wasserman, Univ. of Michigan (United States)

Published in SPIE Proceedings Vol. 4312:
Multimedia Computing and Networking 2001
Wu-chi Feng; Martin G. Kienzle, Editor(s)

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