Determining the color match between image data and graphics objects
US7649649B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 17, 2005 |
| Grant date | Jan 19, 2010 |
| Priority date | — |
| Expiry date | Jun 4, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T7/90
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system/method of color match assessment for electronic documents includes receiving digital data defining a composite electronic document including a raster image object having an edge and a color graphics object bordering the edge of the raster image object. The pixel color values defining the edge of the raster image object are processed to estimate a local color variance of the pixel color values. The local color variance is used to determine if the edge can be color matched to the bordering color graphics object. If the edge can be color matched, a match color for the edge is derived. The match color is associated with the digital data defining the electronic document so that a downstream object color match system can use the match color as needed, e.g., to adjust the color of the bordering color graphics object to ensure a match with the edge of the raster image object when the electronic document is printed using a xerographic printing process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.