Volume holograms for image restoration
- 1 May 1980
- journal article
- Published by Optica Publishing Group in Journal of the Optical Society of America
- Vol. 70 (5) , 515-522
- https://doi.org/10.1364/josa.70.000515
Abstract
The angular selectivity of volume diffraction gratings is exploited to form a spatial-frequency filter. The filter is recorded in a thick recording medium as a superposition of several simple gratings or as a single grating with a modulation that varies in depth. Such a device can have controlled angular selectivity so as to alter the relative amplitude and phase of selected spatial-frequency components. A coupled-wave formalism is used to analyze the angular selectivity of this device and experimental results demonstrate its usefulness in improving motion-blurred images.Keywords
This publication has 11 references indexed in Scilit:
- Spatial filtering properties of volume hologramsOptical and Quantum Electronics, 1979
- Image restoration using volume diffraction gratingsOptics Letters, 1978
- Complex spatial filters for image deconvolutionProceedings of the IEEE, 1977
- Image improvement and three-dimensional reconstruction using holographic image processingProceedings of the IEEE, 1977
- Reconstructed images from volume holograms in the Fraunhofer approximation: Analysis by a new spherical-wave expansionJournal of the Optical Society of America, 1976
- Coupling in doubly exposed, thick holographic gratingsJournal of the Optical Society of America, 1975
- Coupled-wave theory for multiply exposed thick holographic gratingsJournal of the Optical Society of America, 1975
- Coupled Wave Theory for Thick Hologram GratingsBell System Technical Journal, 1969
- Nonuniform Sinusoidally Modulated Dielectric Gratings*Journal of the Optical Society of America, 1969
- Holographic Data Storage in Three-Dimensional MediaApplied Optics, 1966