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Nonlinear dynamic range transformation in visual communication channels

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1 Author(s)
Alter-Gartenberg, R. ; Dept. of Comput. Sci., Coll. of William & Mary, Williamsburg, VA, USA

The article evaluates nonlinear dynamic range transformation in the context of the end-to-end continuous-input/discrete processing/continuous-display imaging process. Dynamic range transformation is required when we have the following: (i) the wide dynamic range encountered in nature is compressed into the relatively narrow dynamic range of the display, particularly for spatially varying irradiance (e.g., shadow); (ii) coarse quantization is expanded to the wider dynamic range of the display; and (iii) nonlinear tone scale transformation compensates for the correction in the camera amplifier

Published in:

Image Processing, IEEE Transactions on  (Volume:5 ,  Issue: 3 )