Color measuring method and device
US6362849B1 · kind B1 · utility
14Cited by
13References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 24, 1998 |
| Grant date | Mar 26, 2002 |
| Priority date | — |
| Expiry date | Mar 24, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N17/02
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention relates to apparatus for measuring color, the apparatus comprising: an acquisition system including a video camera and processing means organized to respond to the signals delivered by the camera to determine the tristimulus values of the color of the object in a reference colorimetric system by using a transfer matrix to transform the colorimetric system associated with said acquisition system into the reference colorimetric system, and to determine a correction function &Ggr; to correct the non-linearities of said acquisition system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.