A novel method for real-time edge-enhancement and its application to pattern recognition

Huayong Ge; Enjian Bai; Hong Fan

doi:10.1117/12.868597

9 November 2010 A novel method for real-time edge-enhancement and its application to pattern recognition

Huayong Ge, Enjian Bai, Hong Fan

Proceedings Volume 7850, Optoelectronic Imaging and Multimedia Technology; 785016 (2010) https://doi.org/10.1117/12.868597
Event: Photonics Asia 2010, 2010, Beijing, China

Abstract

The coupling gain coefficient g is redefined and deduced based on coupling theory, the variant of coupling gain coefficient g for different ΓL and r is analyzed. A new optical system is proposed for image edge-enhancement. It recycles the back signal to amplify the edge signal, which has the advantages of high throughput efficiency and brightness. The optical system is designed and built, and the edge-enhanced image of hand bone is captured electronically by CCD camera. The principle of optical correlation is demonstrated, 3-D correlation distribution of letter H with and without edge-enhancement is simulated, the discrimination capability I_ac and the full-width at half maximum intensity (FWHM) are compared for two kinds of correlators. The analysis shows that edge-enhancement preprocessing can improve the performance of correlator effectively.

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Huayong Ge, Enjian Bai, and Hong Fan "A novel method for real-time edge-enhancement and its application to pattern recognition", Proc. SPIE 7850, Optoelectronic Imaging and Multimedia Technology, 785016 (9 November 2010); https://doi.org/10.1117/12.868597

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KEYWORDS

Optical correlators

Two wave mixing

Pattern recognition

Spatial frequencies

Crystals

Joint transforms

Mirrors

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