Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Effect on grating identification of sampling with degenerate arrays

Not Accessible

Your library or personal account may give you access

Abstract

We have measured observer performance in identifying gratings that were sampled by degenerate-sampling arrays. Grating identification for high-spatial-frequency stimuli fell to threshold levels only after more than 88% of the sampling elements were subtracted. Although several studies with normal observers have shown that foveal visual acuity corresponds to estimates of interphotoreceptor spacing derived from anatomical photoreceptor density, a simple transformation of sampling-element density to mean spacing does not describe the results in our simulation of degenerate-sampling arrays. To the extent that our model simulates the anatomical changes of retinal pathology, our results suggest that grating acuity reflects the normal high-spatial-sampling rate of small regions of preserved anatomy in the degenerate retina rather than the mean density or spacing of foveal receptors after massive degeneration.

© 1992 Optical Society of America

Full Article  |  PDF Article
More Like This
Effect of spatial sampling on grating resolution and letter identification

Kenneth R. Alexander, Wei Xie, Deborah J. Derlacki, and Janet P. Szlyk
J. Opt. Soc. Am. A 12(9) 1825-1833 (1995)

Effect of window size on detection acuity and resolution acuity for sinusoidal gratings in central and peripheral vision

Roger S. Anderson, David W. Evans, and Larry N. Thibos
J. Opt. Soc. Am. A 13(4) 697-706 (1996)

Optical and photoreceptor immaturities limit the spatial and chromatic vision of human neonates

Martin S. Banks and Patrick J. Bennett
J. Opt. Soc. Am. A 5(12) 2059-2079 (1988)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (4)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (5)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved