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14 June 2006 Synthesized phase objects used instead of real ones for optical-digital recognition systems: experiment
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Proceedings Volume 6254, Seventh International Conference on Correlation Optics; 625419 (2006) https://doi.org/10.1117/12.679944
Event: Seventh International Conference on Correlation Optics, 2005, Chernivsti, Ukraine
Abstract
The method of pattern recognition based on replacement of object images incoming to the correlator input by object-dependent synthesized phase objects calculated using the iterative Fourier-transform algorithm was developed by us earlier. In this work, we performed experimental testing the above method by using an opticaldigital 4F-correlator. Synthesized phase objects were introduced into the correlator through the spatial light modulator LC 2002. Holographic matched filters were recorded using self-developing photopolymers PPC-488. For two test objects, we obtained unified (δ-like) correlation signals with the signal-to-noise ratio reaching 24 dB, while the diffraction efficiency of these filters was up to 30%.
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Pavel V. Yezhov, Alexander V. Kuzmenko, Tatiana N. Smirnova, and Andriy A. Ivanovskyy "Synthesized phase objects used instead of real ones for optical-digital recognition systems: experiment", Proc. SPIE 6254, Seventh International Conference on Correlation Optics, 625419 (14 June 2006); https://doi.org/10.1117/12.679944
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