Adaptive intrafield reducing of Gaussian noise by fuzzy logic processing
US6175657A · kind A · utility
8Cited by
3References
14Claims
0Family size
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Key dates
| Filing date | May 7, 1998 |
| Grant date | Jan 16, 2001 |
| Priority date | — |
| Expiry date | May 7, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T5/20
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The level of Gaussian noise in a memory field being scanned by rows is reduced by reconstructing each pixel by fuzzy logic processors. The processors process the values of pixels neighboring the pixel being processed and belonging to a processing window defined by the last scanned row and the row being scanned, thus minimizing the memory requirement of the filtering system to a single row. The system performs an adaptive filtering within the current field itself and does not produce "edge-smoothing" effects as in prior adaptive filtering systems operating on consecutive fields.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.