Fourier optics and coherent imaging techniques

Silverio P. Almeida

doi:10.1117/12.57714

1 March 1992 Fourier optics and coherent imaging techniques

Silverio P. Almeida

Proceedings Volume 1524, Bioptics: Optics in Biomedicine and Environmental Sciences; (1992) https://doi.org/10.1117/12.57714
Event: Bioptics: Optics in Biomedicine and Environmental Studies, 1991, Porto, Portugal

Abstract

General scalar diffraction theory forms the basis for providing use with a description of wave propagation for various coherent input field distributions. This theory leads to the development of the Fresnel and Fraunhofer approximations, which are the starting point for our treatment of optical Fourier image processing. Presented are imaging techniques used to record optical Fourier transforms of various input field distributions. Also presented are methods used to record optical matched spatial filters used in pattern recognition applications. Examples are given of optical Fourier transforms for different input fields, correlations resulting from pattern recognition studies, and designs of optical hybrid systems used in image processing and pattern recognition.

Citation Download Citation

Silverio P. Almeida "Fourier optics and coherent imaging techniques", Proc. SPIE 1524, Bioptics: Optics in Biomedicine and Environmental Sciences, (1 March 1992); https://doi.org/10.1117/12.57714

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