Image reading apparatus, image processing apparatus, image reading method, and computer product
US7414750B2 · kind B2 · utility
4Cited by
12References
28Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 4, 2002 |
| Grant date | Aug 19, 2008 |
| Priority date | — |
| Expiry date | Jan 22, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/6033
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In the image reading apparatus, reference color patches used to determine the necessity of calibration are read, and the read image for the reference color patches is stored. The read image is converted using a color conversion function from data for a device-dependent RGB space to sRGB data for a standard color space to obtain sRGB reference image data. The converted read image and the sRGB reference image are displayed on a CRT. An operator compares the two images and performs an entry operation for executing calibration if the amount of displacement between the two is significant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.