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Science 22 July 1983:
Vol. 221. no. 4608, pp. 385 - 387
DOI: 10.1126/science.6867717
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Articles

Science, Vol 221, Issue 4608, 385-387
Copyright © 1983 by American Association for the Advancement of Science

articles

Consequences of spatial sampling by a human photoreceptor mosaic

DR Williams and R Collier

The short wavelength color mechanism in the human visual system can distinguish gratings from uniform fields of the same average radiance at spatial frequencies that are twice as high as the highest at which it can resolve bars in the grating. This discrimination above the resolution limit is associated with a splotchy or mottled appearance of the grating similar to two-dimensional noise. The most plausible explanation for the mottled pattern is that it is a moire pattern produced by aliasing (spatial undersampling) by an irregular and sparse mosaic of short wavelength cones.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
The Robustness of Various Forms of Perimetry to Different Levels of Induced Intraocular Stray Light.
R. S. Anderson, T. Redmond, D. R. McDowell, K. M. M. Breslin, and M. B. Zlatkova (2009)
Invest. Ophthalmol. Vis. Sci. 50, 4022-4028
   Abstract »    Full Text »    PDF »
Spectral consequences of photoreceptor sampling in the rhesus retina.
J. Yellott Jr (1983)
Science 221, 382-385
   Abstract »    PDF »


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