OSA's Digital Library

Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 66, Iss. 6 — Jun. 1, 1976
  • pp: 617–625

Theory of spatial-frequency filtering by the human visual system. II. Performance limited by video noise

Alvin D. Schnitzler  »View Author Affiliations


JOSA, Vol. 66, Issue 6, pp. 617-625 (1976)
http://dx.doi.org/10.1364/JOSA.66.000617


View Full Text Article

Acrobat PDF (1195 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

A detailed theory of the detection of sinusoidal gratings displayed with suprathreshold luminous fluctuations is developed by employing a previous model of the visual and decision-making systems. An important feature of the model is the organization of the photoreceptors and decision-making system into a set of parallel, independent photoreceptive field (PRF)-decision center channels that function like a set of parallel spatialfrequency filters, each associated with an independent threshold detector. A technique is proposed for determining the modulation sensitivity functions (MSFs) of single detection channels by obtaining threshold modulation (MTN) data at a fixed sinusoidal grating frequency (ν) while varying the center frequency (νc) of narrow-band luminous fluctuations caused by video noise (VN). The theory predicts that the ratio, at a given ν, of MTN obtained as a function of νc to the MTN obtained without VN is proportional to the MSF of the particular channel for which the widths of the excitatory and inhibitory regions of the PRF equal a halfperiod of ν. Good agreement between theoretical curves and experimental data appearing in the literature provides strong corroboration of the theory.

© 1976 Optical Society of America

Citation
Alvin D. Schnitzler, "Theory of spatial-frequency filtering by the human visual system. II. Performance limited by video noise," J. Opt. Soc. Am. 66, 617-625 (1976)
http://www.opticsinfobase.org/josa/abstract.cfm?URI=josa-66-6-617

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

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

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited