Acoustical holographic recording with coherent optical read-out and image processing
Abstract
New acoustic holographic wave memory devices have been designed for real-time in-situ recording applications. The basic operating principles of these devices and experimental results through the use of some of the prototypes of the devices are presented. Recording media used in the device include thermoplastic resin, Crisco vegetable oil, and Wilson corn oil. In addition, nonlinear coherent optical image processing techniques including equidensitometry, A-D conversion, and pseudo-color, all based on the new contact screen technique, are discussed with regard to the enhancement of the normally poor-resolved acoustical holographic images.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- October 1980
- Bibcode:
- 1980STIN...8123439L
- Keywords:
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- Acousto-Optics;
- Holography;
- Image Processing;
- Analog To Digital Converters;
- Imagery;
- Interferometry;
- Real Time Operation;
- Sound Waves;
- Instrumentation and Photography