Coherent Optical Correlation For Defocused Images Recognition

Paolo Sirotti; Ennio Tofful

doi:10.1117/12.950289

2 March 1989 Coherent Optical Correlation For Defocused Images Recognition

Paolo Sirotti, Ennio Tofful

Proceedings Volume 1027, Image Processing II; (1989) https://doi.org/10.1117/12.950289
Event: 1988 International Congress on Optical Science and Engineering, 1988, Hamburg, Germany

Abstract

Deblurring images affected by severe focus defeat gives often poor results. A coherent optical method, the joint Fourier transform correlation, is suggested for the recognition of defocused images. Basing on the symmetry of the crosscorrelation function between an out-of-focus and the in-focus image, the recognition may be attempted simply correlating the unknown out-of-focus image with a set of reference in-focus images.

Citation Download Citation

Paolo Sirotti and Ennio Tofful "Coherent Optical Correlation For Defocused Images Recognition", Proc. SPIE 1027, Image Processing II, (2 March 1989); https://doi.org/10.1117/12.950289

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