Image reading apparatus, image forming apparatus, image information conversion method and computer readable medium
US8537442B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 6, 2010 |
| Grant date | Sep 17, 2013 |
| Priority date | — |
| Expiry date | Mar 11, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/044
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image reading apparatus includes: a light source that generates light by synthesizing light from different illuminants and irradiates an irradiated object with the generated light; a reading unit that reads light irradiated by the light source and reflected by the irradiated object and generates image information in a first color space on the irradiated object; a color conversion unit that converts the image information in the first color space into image information in a second color space with a color conversion factor group; and a color conversion factor group setting unit that acquires from the reading unit the image information generated by using, as the irradiated object, a color sample formed in a color of light emitted by one of the illuminants, determines the color conversion factor group to be used, according to the acquired image information, and sets the color conversion factor group to the color conversion unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.