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Proceedings Paper

Impact of rate control tools on very fast non-embedded wavelet image encoders
Author(s): O. López; M. Martínez-Rach; J. Oliver; M. P. Malumbres
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Paper Abstract

Recently, there has been an increasing interest in the design of very fast wavelet image encoders focused on applications (interactive real-time image&video applications, GIS systems, etc) and devices (digital cameras, mobile phones, PDAs, etc) where coding delay and/or available computing resources (working memory and power processing) are critical for proper operation. Most of these fast wavelet image encoders are non-embedded in order to reduce complexity, so no rate control tools are available for scalable coding applications. In this work, we analyze the impact of simple rate control tools for these encoders in order to determine if the inclusion of rate control functionality is worth enough with respect to popular embedded encoders like SPIHT and JPEG2000. We perform the study by adding rate control to the nonembedded LTW encoder, showing that the increase in complexity still maintains LTW competitive with respect SPIHT and JPEG2000 in terms of R/D performance, coding delay and memory consumption.

Paper Details

Date Published: 29 January 2007
PDF: 9 pages
Proc. SPIE 6508, Visual Communications and Image Processing 2007, 650829 (29 January 2007); doi: 10.1117/12.704151
Show Author Affiliations
O. López, Miguel Hernández Univ. (Spain)
M. Martínez-Rach, Miguel Hernández Univ. (Spain)
J. Oliver, Technical Univ. of Valencia (Spain)
M. P. Malumbres, Miguel Hernández Univ. (Spain)

Published in SPIE Proceedings Vol. 6508:
Visual Communications and Image Processing 2007
Chang Wen Chen; Dan Schonfeld; Jiebo Luo, Editor(s)

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