Charge-coupled device Gaussian convolution method
US4555770A · kind A · utility
8Cited by
11References
4Claims
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Key dates
| Filing date | Oct 13, 1983 |
| Grant date | Nov 26, 1985 |
| Priority date | — |
| Expiry date | Oct 13, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06G7/1907
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A Gaussian convolution is produced in a CCD imager or shift register by a method involving a special clocking sequence. The principle of operation, analagous to the process of diffusion, involves the deliberate intermixing of adjacent charge packets in a controlled way. Amounts of charge are exchanged between adjacent pixels a number of times, the result approximating the convolution of the image with a Gaussian function whose width is dependent upon the number of mixing cycles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.