1 May 1974 The Perceptual Image Formation Processes Of Brightness Contrast
Author Affiliations +
Proceedings Volume 0043, Application of Optical Instrumentation in Medicine II; (1974) https://doi.org/10.1117/12.953890
Event: Application of optical Instrumentation in Medicine II, 1973, Chicago, United States
Abstract
The paper gives some preliminary results of a continuing experimental study of adjacency effect. One of the important variables to consider in evaluating photo-interpretation by human observers is the adjacency effect, such as that resulting from the sharp contrast of black and white areas on a photographic surface. When human observers view a photographic surface on which black and white are adjoining, the adjacency or "edge" effect occurs. They notice a band of greater brightness just before the light area apparently shades into gray and a band of greater darkness just before the apparently gray area shades into greater darkness. Examination by a photometer or other optical instrument shows that these bands of light and dark do not exist and are only apparently present in the pattern. The apparent brighter and darker bands occur at the point of what was first known as the Mach Band effect (1916). The paper is concerned with a quantitative evaluation of the Mach Band effect when brief exposure time, less than .5 seconds is used.
© (1974) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Kiyoe Mizusawa, "The Perceptual Image Formation Processes Of Brightness Contrast", Proc. SPIE 0043, Application of Optical Instrumentation in Medicine II, (1 May 1974); doi: 10.1117/12.953890; https://doi.org/10.1117/12.953890
PROCEEDINGS
4 PAGES


SHARE
RELATED CONTENT

Automatic coloring to freehand line drawings online
Proceedings of SPIE (March 04 2015)
Portable, low-priced retinal imager for eye disease screening
Proceedings of SPIE (February 28 2014)
New method to analyze the perception of size
Proceedings of SPIE (December 07 2001)
Self-adaptive iris image acquisition system
Proceedings of SPIE (March 17 2008)
Registration of ophthalmic images using control points
Proceedings of SPIE (March 19 2003)

Back to Top