Color image converting apparatus and method for determining when a homogeneous color space is located outside of a reproducible color space
US6016359A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 13, 1997 |
| Grant date | Jan 18, 2000 |
| Priority date | — |
| Expiry date | Nov 13, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T11/001
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A color image converting apparatus and color image converting method thereof according to the present invention decides, when it is determined that a signal for a homogeneous color space is present outside a reproducible color space, the necessity of color space compression and the compressing direction for each unit region according to a frequency of occurrence of the signal for each unit region for unit regions present on a plane within an area having constant brightness including the corresponding region, and outputs colors as closest to the original colors as possible preserving color balance and impression of the input color image signal by mapping a unit region decided to be subjected to color space compression onto another region in the compressing direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.