SPOT SHAPING AND INCOHERENT OPTICAL SMOOTHING FOR RASTER SCANNED IMAGERY

被引：5

作者：

GONSALVES, RA ^{[1
]}

CONSIDINE, PS ^{[1
]}

机构：

[1] EIKONIX CORP, 103 TERRACE HALL AVE, BURLINGTON, MA 01803 USA

来源：

OPTICAL ENGINEERING | 1976年 / 15卷 / 01期

关键词：

OPTICAL FILTERS;

D O I：

10.1117/12.7971911

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

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/f**2 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.

引用

页码：64 / 67

页数：4

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