Color matching image data
US6754399B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 25, 2001 |
| Grant date | Jun 22, 2004 |
| Priority date | — |
| Expiry date | May 23, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/6011
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of matching image color and or luminance characteristics in an image processing system. In order to match an input image with a reference image, a color transformation M is initialized (601). An output image is copied (602) from the input image. The following sequence of operations is then repeated: Output and reference images are displayed on a system monitor. The user identifies (603) a highlight, shadow or overall region in both images. These regions are processed (604) to identify a difference (605). The difference is concatenated (606) onto transformation M. The output image is updated (607) by processing the input with M.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.