Grayscale image de-speckle algorithm
US7031543B2 · kind B2 · utility
16Cited by
8References
34Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 2, 2002 |
| Grant date | Apr 18, 2006 |
| Priority date | — |
| Expiry date | Oct 18, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/10008
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An annular window-shaped structuring element is provided for image processing to remove speckles from a scanned image. The window-shaped structuring element is composed of two differently sized squares sharing the same geometric center-point. The pixel to be analyzed with the structuring element is at the center-point. The structuring element is used in a method to remove speckles from binary, grayscale, and/or color images by first eroding the image, detecting speckles relative to other pixels in the image, and removing declared speckles. The method may additionally include a halftoning module to protect halftone images.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.