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

Nonlinear local image preprocessing using coherent optical techniques

Not Accessible

Your library or personal account may give you access

Abstract

Two coherent optical systems are described that can realize local nonlinear preprocessing operators such as the Sobel edge-enhancement function in parallel on a 2-D input image. By local, we refer to the size of the image region rather than a nonstationary process. Realization of such operators using a multiple-exposure matched spatial filter and a computer-generated hologram is discussed. Experimental results using these techniques for 3 × 3 and 5 × 5 Sobel operators, respectively, are presented. Our techniques can be extended to larger window sizes and other edge-enhancement operators. These new operators are achieved by novel coherent systems using complex arithmetic with magnitude evaluation of the output pattern.

© 1983 Optical Society of America

Full Article  |  PDF Article
More Like This
Optical symbolic substitution: edge detection using Prewitt, Sobel, and Roberts operators

Abdallah K. Cherri and Mohammad A. Karim
Appl. Opt. 28(21) 4644-4648 (1989)

Statistical filter for image feature extraction

H. C. Schau
Appl. Opt. 19(13) 2182-2190 (1980)

Frequency-multiplexed and pipelined iterative optical systolic array processors

David Casasent, James Jackson, and Charles Neuman
Appl. Opt. 22(1) 115-124 (1983)

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 (6)

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 (19)

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