Two-dimensional image edge enhancement using two orders of Bragg diffraction
| Autor: | V. M. Kotov, S. V. Averin |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Imagination
Physics Thesaurus (information retrieval) business.industry media_common.quotation_subject Physics::Optics Bragg's law Statistical and Nonlinear Physics Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Image edge Search engine Optics Electrical and Electronic Engineering business media_common |
| Zdroj: | Quantum Electronics. 50:305-308 |
| ISSN: | 1468-4799 1063-7818 |
| DOI: | 10.1070/qel17137 |
| Popis: | The process of two-dimensional image edge enhancement with an acousto-optical spatial filter using two orders of light diffraction is studied. It is theoretically shown that the diffraction that occurs in a paratellurite crystal on a ‘slow’ acoustic wave propagating orthogonally to the optical axis of the crystal allows enhancing a two-dimensional edge of an image, transferred by optical radiation with a wavelength of 0.63 μm in a wide band of acoustic frequencies 25 – 50 MHz. Enhancement of a two-dimensional image edge at an acoustic frequency of 29 MHz is experimentally demonstrated. |
| Databáze: | OpenAIRE |
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