1 November 1992 Display nonlinearity in digital image processing for visual communications
Author Affiliations +
Optical Engineering, 31(11), (1992). doi:10.1117/12.59989
Abstract
The luminance emitted from a cathode ray rube (CRT) display is a nonlinear function (the gamma function) of the input video signal voltage. In most analog video systems, compensation for this nonlinear transfer function is implemented in the camera amplifiers. When CRT displays are used to present psychophysical stimuli in vision research, the specific display nonlinearity usually is measured and accounted for to ensure that the luminance of each pixel in the synthetic image properly represents the intended value. However, when using digital image processing, the linear analog-to-digital converters store a digital image that is nonlinearly related to the displayed or recorded image. The effect of this nonlinear transformation on a variety of image-processing applications used in visual communications is described.
Eli Peli, "Display nonlinearity in digital image processing for visual communications," Optical Engineering 31(11), (1 November 1992). http://dx.doi.org/10.1117/12.59989
JOURNAL ARTICLE
9 PAGES


SHARE
KEYWORDS
Image filtering

Digital image processing

Image processing

Image enhancement

Linear filtering

CRTs

Video

RELATED CONTENT

A focal plane normal-flow measurement chip
Proceedings of SPIE (August 30 2004)
Spontaneous magnetic field diffusion from laser plasma
Proceedings of SPIE (December 01 1991)
Contrast In Images
Proceedings of SPIE (October 25 1988)

Back to Top