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
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
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页码:64 / 67
页数:4
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