Optical Image Subtraction Using a LCTV SLM and White-light Imaging Grating Interferometer
| Autor: | L. Z. Cai, T.H. Chao |
|---|---|
| Rok vydání: | 1990 |
| Předmět: |
Physics
business.industry ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION Astrophysics::Instrumentation and Methods for Astrophysics Subtraction Physics::Optics Image processing Image subtraction Atomic and Molecular Physics and Optics law.invention Interferometry Optics Optical modulator Liquid crystal Achromatic lens law business Fresnel diffraction |
| Zdroj: | Journal of Modern Optics. 37:1127-1138 |
| ISSN: | 1362-3044 0950-0340 |
| Popis: | A new white-light optical image subtraction technique employing a liquid crystal television and a dual-channel achromatic imaging grating interferometer is introduced. A general analysis based on Fresnel diffraction theory for the system with an extended white-light source is made, the condition for the formation of achromatic fringes is derived, and the experimental results are presented. This method is low-cost and easy to perform. It is specially suited for the real-world scene monitoring and can be extended to real-time processing. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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