Characterization Of Periodicities In Images By A Video Optical Feedback Method

Jacques P. Fleuret; A. Clainchard; H. Maitre

doi:10.1117/12.935285

26 October 1983 Characterization Of Periodicities In Images By A Video Optical Feedback Method

Jacques P. Fleuret, A. Clainchard, H. Maitre

Proceedings Volume 0397, Applications of Digital Image Processing V; (1983) https://doi.org/10.1117/12.935285
Event: 1983 International Technical Conference/Europe, 1983, Geneva, Switzerland

Abstract

We propose a hybrid method to detect, in real time, simple periodical structures. The method is based on a video-optical feedback system which is well adapted to the probleme since, in each feedback loop, the pattern under study is shifted in a given way. The global transfer function of such a system depends both on time and space parameters. After a theoretical study of the stability conditions of the loop, we analyse the effect of non linearities on the global contrast as a function of spatial frequency. An experimental verification of these properties is obtained with a test pattern.

Citation Download Citation

Jacques P. Fleuret, A. Clainchard, and H. Maitre "Characterization Of Periodicities In Images By A Video Optical Feedback Method", Proc. SPIE 0397, Applications of Digital Image Processing V, (26 October 1983); https://doi.org/10.1117/12.935285

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