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

Linear versus logarithmic spatial filtering in the removal of multiplicative noises

Not Accessible

Your library or personal account may give you access

Abstract

Linear and logarithmic coherent spatial-filtering techniques are compared in the separation of multiplicative noise from an image in a coherent-optical image-processing system. It is demonstrated that both techniques are effective in the removal of simple grating-type high-frequency noises, but that linear filtering cannot remove noise of spatial frequencies lower than 5 lines/cm, whereas logarithmic filtering can.

© 1981 Optical Society of America

Full Article  |  PDF Article
More Like This
All-optical homomorphic image-processing system

Mohammad A. Karim and Hua-Kuang Liu
Opt. Lett. 7(8) 371-373 (1982)

Optical logarithmic filtering using inherent film nonlinearity

Anthony Tai, Thomas Cheng, and F. T. S. Yu
Appl. Opt. 16(9) 2559-2564 (1977)

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 (17)

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