Title

Image Edge Enhancement with Two Cascaded Acousto-Optic Cells with Contrapropagating Sound

Document Type

Article

Publication Date

5-1998

Publication Source

Applied Optics

Abstract

Basic real-time programmable image-processing operations are accomplished by use of acousto-optic (AO) cells. Instead of frequency-plane filters, the AO cells are placed directly behind the object. The one-dimensional edge-enhancement results with one AO cell can be improved by use of two AO cells that are placed in tandem with contrapropagating sound. The dominant second-derivative operation obtained from the transfer function of the undiffracted order works like a one-dimensional Laplacian operator that enables improved edge enhancement.

Inclusive pages

3007-3014

ISBN/ISSN

1559-128X

Comments

Permission documentation is on file.

Publisher

Optical Society of America

Volume

37

Issue

14

Peer Reviewed

yes