Color mapping system and method
US5119186A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 28, 1989 |
| Grant date | Jun 2, 1992 |
| Priority date | — |
| Expiry date | Sep 28, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T11/001
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
RGB components of pairs of adjacent pels of a captured digitized image are averaged. A perceived color palette is constructed, each color being comprised of functionally combined RGB components of two different input palette colors. An array is formed of continuous colors, each indexed to the perceived palette color to which its RGB components are closest and indicating the two input palette colors defining the respective perceived color. RGB components for each averaged pel pair and the array index are then used to locate the perceived color closest thereto and, the two input palette colors corresponding to the perceived color. These two input colors are then substituted in a display for those of the two averaged pels and the process repeated for all averaged pel pairs. In a preferred embodiment, the difference between the perceived and averaged colors is diffused to adjacent averaged pels. An image is thereby readily produced having substantially more perceived colors than those available in the input palette.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.