Information efficiency in visual communication

Rachel Alter-Gartenberg; Zia-ur Rahman

doi:10.1117/12.150943

27 August 1993 Information efficiency in visual communication

Rachel Alter-Gartenberg, Zia-ur Rahman

Proceedings Volume 1961, Visual Information Processing II; (1993) https://doi.org/10.1117/12.150943
Event: Optical Engineering and Photonics in Aerospace Sensing, 1993, Orlando, FL, United States

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.

Citation Download Citation

Rachel Alter-Gartenberg and Zia-ur Rahman "Information efficiency in visual communication", Proc. SPIE 1961, Visual Information Processing II, (27 August 1993); https://doi.org/10.1117/12.150943

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