title: Nonlinear dynamic range transformation in visual communication channels.
abstract: 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.
authors.affiliation: Dept. of Comput. Sci., Coll. of William and Mary, Williamsburg, VA.
authors.forename: R
authors.initials: R
authors.lastname: Alter-Gartenberg