Information processing method, information processing apparatus, program and medium
US7978385B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 3, 2007 |
| Grant date | Jul 12, 2011 |
| Priority date | — |
| Expiry date | Jun 25, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/6033
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A patch image generating section 101 generates a patch image by resolving the RGB space into an arbitrary number of steps, and by converting into a CMYK space via an LUT. A patch image calorimetric section 102 outputs the patch image onto a recording medium via a printer, and carries out colorimetry of the output image with a calorimeter. As calorimetric values, calorimetric values represented in an L*a*b* space independent of the RGB space and CMYK space are obtained. A linear space generating section 104 calculates ideal spatial distribution in the color space of the LUT according to the calorimetric values supplied. A color separation evaluation value calculating section 105 compares the ideal spatial distribution in the color space of the LUT with actual measurement data of the LUT. According to the compared results, color separation evaluation values are calculated from differences between the ideal value and actual measurement values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.