Optical method and system for generating expansion coefficients for an image processing function
US5454047A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 12, 1994 |
| Grant date | Sep 26, 1995 |
| Priority date | — |
| Expiry date | Jan 12, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T9/007
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system for optically generating expansion coefficients for an image processing function. The invention (10) includes a first optical element (18) for providing a transform of an image provided at a first image plane (16). A second optical arrangement (20) provides a product of the transform of the image and a transform of a convolving function. This product is transformed by a lens (22) to provide an image intensity distribution representative of expansion coefficients resulting from a convolution of the image by the convolving function. In a specific implementation, the convolving function is a wavelet and the intensity distribution is detected to provide the expansion coefficients.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.