| Autor: |
Tai Chiung Hsieh, LongJang Hu, Sheng Jehn Yang, H. P. Lin, Shun-Lih Tu, Ken-Yuh Hsu, Shu En Hsu, T. S. Yeh, Shiuan-Huei Lin, Chia-Hui Lin |
| Rok vydání: |
1994 |
| Předmět: |
|
| Zdroj: |
SPIE Proceedings. |
| ISSN: |
0277-786X |
| DOI: |
10.1117/12.178619 |
| Popis: |
Heavily iron doped lithium niobate photorefractive crystals are grown and characterized. The crystals have high diffraction efficiency and fast temporal response and hence are suitable for real-time image processing. Three applications of thin Fe: LiNb0 3 plates are demonstrated: the joint-transform correlator, the optical perception, and the hybrid image classifier. In the first and third systems, the heavily doped (0.5% mole) crystals are used. These crystals have fast temporal response (300-400 msec) and thus provide a means for real time optical processing. In the second system, a slightly light doped (0.1% mole) crystal is used. It has relatively long (> 1 minute) response time and is used for recording the dynamic memory in a neural network. Image recognition by these three systems are presented. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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