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Contrast manipulation and controllable spatial filtering via photorefractive two-beam coupling

Record type: Article

A scheme is presented that achieves passive controllable spatial filtering via two-beam coupling in BaTiO3, between a reference beam and the optical Fourier transform of an input image. The nature of the spatial filtering is determined by the intensity dependent gain seen by each component of the Fourier transform. By appropriate choice of intensity ratio, the operations of contrast enhancement, feature extraction, and defect enhancement are possible, and representative examples of these are given.

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Citation

Khoury, J.A., Hussain, G. and Eason, R.W. (1989) Contrast manipulation and controllable spatial filtering via photorefractive two-beam coupling Optics Communications, 70, (4), pp. 272-276. (doi:10.1016/0030-4018(89)90318-0).

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Published date: 15 March 1989

Identifiers

Local EPrints ID: 77510
URI: http://eprints.soton.ac.uk/id/eprint/77510
ISSN: 0030-4018
PURE UUID: 036408e0-370c-4adc-a85d-fdd14713b874
ORCID for R.W. Eason: ORCID iD orcid.org/0000-0001-9704-2204

Catalogue record

Date deposited: 11 Mar 2010
Last modified: 18 Jul 2017 23:32

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Contributors

Author: J.A. Khoury
Author: G. Hussain
Author: R.W. Eason ORCID iD

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