Digital image processing system
US4972359A · kind A · utility
102Cited by
9References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 3, 1987 |
| Grant date | Nov 20, 1990 |
| Priority date | — |
| Expiry date | Apr 3, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T5/20
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A digital image processing system provides convolution, correlation and normalized correlation functions, without per-pixel multiplication operations, utilizing factorization and moment generation. A first memory array is addressed by image pixel values, and a second memory array is addressed by template pixel values. Logic and control elements increment the array element addressed by the image pixel value, and add the image pixel value to the array element addressed by a corresponding template pixel value. The resulting sums in the first and second arrays are processed to generate convolution and correlation functions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.