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Nonlinear filtering in digital-optical processors
T. Shoplik
Institute of Geophysics, University of Warsaw, Pasteur 7, 02-093 Warsaw, Poland

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Pages: 113-123.

Full text of article: Russian language.

Abstract:
Digital-optical processors performing rank and morphological filtering are described. In the processors under review, convolution operations are performed by naturally parallel optical correlators. The following arithmetic and logical operations are performed by the optical method. Due to the application of threshold decomposition, grayscale images are processed layer by layer. An opticaldigital method for calculating local histograms for weighted and binary neighborhoods of any size and shape is presented. Possible configurations of optical correlators are discussed. In conclusion, examples of the effective use of hybrid processors are provided.

Citation:
Shoplik T. Nonlinear filtering in digital-optical processors. Computer Optics 1995; 14- 15(1): 113-123.

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