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Optical Engineering

Spot Shaping and Incoherent Optical Smoothing for Raster Scanned Imagery
Author(s): Robert A. Gonsalves; Philip S. Considine
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Paper Abstract

Raster in scanned imagery can be suppressed to improve visual observation of image detail. In the work reported here this is accomplished by optimal choice of the scanning spot and/or by optimal smoothing. Both techniques are based on selection of a Wiener filter. The optimal spot is shown to extend only over two scan lines, for scenes with 1 /f2 power spectra. The filter is designed to be used in an incoherent imaging system. It is constrained to a phase-only approximation of the optimum complex filter to avoid reducing light level in the optical system. Experimental results demonstrate the effectiveness of the filter design.

Paper Details

Date Published: 1 February 1976
PDF: 4 pages
Opt. Eng. 15(1) 150164 doi: 10.1117/12.7971911
Published in: Optical Engineering Volume 15, Issue 1
Show Author Affiliations
Robert A. Gonsalves, EIKONIX Corporation (United States)
Philip S. Considine, EIKONIX Corporation (United States)

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