Method and apparatus for image contrast modulation
US6633687B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 10, 1999 |
| Grant date | Oct 14, 2003 |
| Priority date | — |
| Expiry date | Sep 10, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2200/28
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An apparatus for image contrast modulation includes a memory for storing a scaling factor and a memory for storing a pixel position. A pixel determiner calculates the position of another pixel based upon the pixel position and the scaling factor. A segment determiner ascertains which segment of the segmented line contains the pixel position. A coefficient generator determines which coefficient is associated with the line segment. A method for image contrast modulation includes defining at least one multi-segmented line that approximates a higher order curve including more than one pixel in a source image, and line-fitting pixel intensity values in a scaled image according to a multi-segmented line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.