Production of a color conversion profile utilizing comparison of spectral reflectance data and comparative colors
US7605943B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 2, 2004 |
| Grant date | Oct 20, 2009 |
| Priority date | — |
| Expiry date | Jun 17, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/6088
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for producing a color conversion profile for use in a color inkjet printer, a color laser printer, or the like. In one embodiment, a spectral printing model converter is used to sample ink amount data to spectral reflectance Rsmp(λ). Using this spectral reflectance Rsmp(λ), colorimetric values CV1, CV2 under two different viewing conditions are calculated, and an evaluation index EI that includes an index of color difference between the colorimetric values CV1, CV2 is calculated. I another embodiment, an evaluation index EI that includes an index of color difference between sample color represented by sample ink amount data and reference color obtained from a reference color patch is calculated. Sample ink amount data having the best evaluation index EI is then selected as a representative sample. Profiles are created from the plurality of selected representative samples.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.