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Proceedings Paper

Information efficiency in visual communication
Author(s): Rachel Alter-Gartenberg; Zia-ur Rahman
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Paper Abstract

This paper evaluates the quantization process in the context of the end-to-end performance of the visual-communication channel. Results show that the trade-off between data transmission and visual quality revolves around the information in the acquired signal, not around its energy. Improved information efficiency is gained by frequency dependent quantization that maintains the information capacity of the channel and reduces the entropy of the encoded signal. Restorations with energy bit-allocation lose both in sharpness and clarity relative to restorations with information bit-allocation. Thus, quantization with information bit-allocation is preferred for high information efficiency and visual quality in optimized visual communication.

Paper Details

Date Published: 27 August 1993
PDF: 11 pages
Proc. SPIE 1961, Visual Information Processing II, (27 August 1993); doi: 10.1117/12.150943
Show Author Affiliations
Rachel Alter-Gartenberg, Old Dominion Univ. (United States)
Zia-ur Rahman, Science and Technology Corp. (United States)

Published in SPIE Proceedings Vol. 1961:
Visual Information Processing II
Friedrich O. Huck; Richard D. Juday, Editor(s)

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