Abstract

Observer-sensitivity to edge and line blur was examined by measuring just-noticeable differences of blur as a function of contrast, edge-profile shape, line width, and for white lines on black and black lines on white. At high luminance ratios, observers can discriminate a blurred image from an unblurred image when the edge-transition width (10–90% luminance points) is of the order of 25 sec of arc. However, when both images are blurred, they can be discriminated when they differ by as little as 5–10 sec of arc.

© 1981 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Two-point resolution near detection threshold

A. Toet and J. J. Koenderink
J. Opt. Soc. Am. A 4(8) 1448-1454 (1987)

Preneural limitations on letter identification in central and peripheral vision

Paul J. Beckmann and Gordon E. Legge
J. Opt. Soc. Am. A 19(12) 2349-2362 (2002)

How are spatial filters used in fovea and parafovea?

R. F. Hess, R. J. Watt, and J. S. Pointer
J. Opt. Soc. Am. A 6(2) 329-339 (1989)

References

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
Login to access OSA Member Subscription

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 OSA member, or as an authorized user of your institution.

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

Figures (8)

You do not have subscription access to this journal. Figure files 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
Login to access OSA Member Subscription

Equations (1)

You do not have subscription access to this journal. Equations 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
Login to access OSA Member Subscription