Title :
Uniform Perceptual Quantization: Applications to Digital Radiography
Author :
Sezan, M. Ibrahim ; Yip, Kwok-Leung ; Daly, Scott J.
Author_Institution :
Electronics Research Laboratories¿Photographic Products Group, Eastman Kodak Company, Rochester, NY 14650
fDate :
7/1/1987 12:00:00 AM
Abstract :
The principle involved in the uniform quantization of perceived lightness is considered in the context of digital radiography. Its effects on the visibility of quantization noise (contouring artifacts) are investigated both analytically and experimentally. Several visual system models of perceived lightness as a function of stimulus luminance are used. These include a logarithmic model, various power function models, and cone models. The results can be extended for other digital imaging modalities.
Keywords :
Humans; Laboratories; Noise level; Optical films; Optical noise; Power system modeling; Predictive models; Quantization; Radiography; Visual system;
Journal_Title :
Systems, Man and Cybernetics, IEEE Transactions on
DOI :
10.1109/TSMC.1987.289352