Nonlinear optical element for incoherent image processing based on photoanisotropy

Burkhard Fleck; Lutz Wenke; P. S. Ramanujam

doi:10.1117/12.354783

19 July 1999 Nonlinear optical element for incoherent image processing based on photoanisotropy

Burkhard Fleck, Lutz Wenke, P. S. Ramanujam

Proceedings Volume 3749, 18th Congress of the International Commission for Optics; (1999) https://doi.org/10.1117/12.354783
Event: ICO XVIII 18th Congress of the International Commission for Optics, 1999, San Francisco, CA, United States

Abstract

Optical information processing is a very important branch of optics research nowadays. One interesting application is the comparison of two images. These techniques are of interest in many applications such as automatic inspection, remote sensing or in communication processing. Such a comparison by means of optical methods is a well established technique both for coherent and incoherent illumination and various methods are known. But especially the use of incoherent light is often connected with complex setups. We describe a simple method for a correlation technique based on optically induced anisotropy which allows the use of white light or of two mutually incoherent laser beams. The element based on the specific feature of photoanisotropic media. These materials response on the intensity of a linearly polarized light wave only.

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Burkhard Fleck, Lutz Wenke, and P. S. Ramanujam "Nonlinear optical element for incoherent image processing based on photoanisotropy", Proc. SPIE 3749, 18th Congress of the International Commission for Optics, (19 July 1999); https://doi.org/10.1117/12.354783

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KEYWORDS

Fourier transforms

Image processing

Polarization

Anisotropy

Optical components

Statistical analysis

Beam splitters

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