Method and apparatus for enhancing discrete pixel images
US6208763A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 14, 1998 |
| Grant date | Mar 27, 2001 |
| Priority date | — |
| Expiry date | Apr 14, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T5/73
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Pixel data representative of a discrete pixel image is processed to identify structures and non-structures in the image defined by the pixel data. The structures and non-structures are processed in different manners. The structures are identified by computing gradient information on each pixel and by comparing the gradient information to a gradient threshold, and by comparing gradient directions for adjacent pixels to one another. The edges defining the structures are binary rank order filtered. The structures are orientation smoothed and sharpened. The non-structures are homogenization smoothed and original texture is blended back into non-structural regions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.