Spatial frequency multiplexed coherent optical processor for calculating generalized moments
US4505544A · kind A · utility
5Cited by
2References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 10, 1982 |
| Grant date | Mar 19, 1985 |
| Priority date | — |
| Expiry date | Jun 10, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06E3/003
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An optical processor that can compute the moments of a two-dimensional image in parallel. The image is placed at the plane of a holographic mask which is disposed in the front focal plane of a Fourier-transforming lens and each of the desired moments is found at a respective one of a plurality of photodetectors arrayed in the back focal plane of the lens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.