The Standard Deviation of Luminance as a Metric for Contrast in Random-Dot Images
- 1 February 1990
- journal article
- Published by SAGE Publications in Perception
- Vol. 19 (1) , 79-101
- https://doi.org/10.1068/p190079
Abstract
Michelson's contrast, C, is an excellent metric for contrast in images with periodic luminance profiles, such as gratings, but is not suitable for images consisting of isolated stimulus elements, eg single bars; other metrics have been devised for such stimuli. But what metric should be used for random-dot images such as are commonly used in stereograms and kinematograms?Keywords
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