Color digital imaging apparatus having a rule-based hue-shift processor
US6507667B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 29, 1999 |
| Grant date | Jan 14, 2003 |
| Priority date | — |
| Expiry date | Dec 29, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/6075
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a color digital imaging apparatus, a light source selector is provided for a user to select a proper illumination condition. When down loading the captured image in a computer system, a color correction function is performed at the computer system. The color correction function is mainly performed by the following elements: hue-shift analyzer for performing hue analysis on the original color digital image signals and generating hue-shift parameters; Rule-Based hue-shift processor for generating color correction parameters by triggering a set of predetermined rules in response to the illumination selecting signal and the hue-shift parameters; color correction module for performing color correction on the original digital color image signals and generating corrected digital color image signals according to a color conversion function based on the color correction parameters; a memory for storing the hue-shift parameters and the corrected digital color image signals; and a display interface for transferring the corrected digital color image signals from the second memory means to a display device and displaying a dialog box for illumination condition selections.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.