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Nonlinear filtering in coherent optical systems through halftone screen processes.

作者信息

Kato H, Goodman J W

出版信息

Appl Opt. 1975 Aug 1;14(8):1813-24. doi: 10.1364/AO.14.001813.

DOI:10.1364/AO.14.001813
PMID:20154925
Abstract

Nonlinear filtering operations can be performed in coherent optical systems with the help of the halftone screen process. Theoretical and practical considerations regarding this type of system are presented. The use of these methods to achieve logarithmic filtering is emphasized. Applications to separation of multiplicative signals and noise, speckle noise reduction, and processing of radiographic images are considered. Experimental results are presented.

摘要

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