| タイトル | An optical processor for zero-crossing edge detection |
| 著者（英） | Jared, David A.; Johnson, Kristina M. |
| 著者所属（英） | NASA Johnson Space Center |
| 発行日 | 1993-01-01
1993 |
| 言語 | eng |
| 内容記述 | An optical processor for zero-crossing edge detection is presented, which consists of two defocused imaging systems to perform the Gaussian convolutions and a VLSI, ferroelectric liquid crystal spatial light modulator (SLM) to determine the zero-crossings. The zero-crossing SLM is a 32 x 32 array of pixels located on 100 microns centers. Each pixels contains a phototransistor, an auto-scaling amplifier, a zero-crossing detection circuit, and a liquid crystal modulating pad. Electrical and optical characteristics of the zero-crossing SLM are presented along with experimental results of the system. |
| NASA分類 | INSTRUMENTATION AND PHOTOGRAPHY |
| レポートNO | 93A53032 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/314395 |
