Information efficiency in visual communicationThis 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.
Alter-Gartenberg, Rachel (Old Dominion Univ., Norfolk; NASA, Langley Research Center Hampton, VA, United States)
Rahman, Zia-Ur (Science and Technology Corp. Hampton, VA, United States)
August 16, 2013
January 1, 1993
Publication: In: Visual information processing II; Proceedings of the Meeting, Orlando, FL, Apr. 14-16, 1993 (A93-53022 23-63)
IDRelationTitle19930069025Analytic PrimaryVisual information processing II; Proceedings of the Meeting, Orlando, FL, Apr. 14-16, 1993