Image processing system, projector, program, information storage medium, and image processing method
US7170535B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 8, 2004 |
| Grant date | Jan 30, 2007 |
| Priority date | — |
| Expiry date | Aug 18, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/73
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In order to provide an image processing system that can correct color non-uniformity due to deterioration with time in a more appropriate manner, a projector is provided with an image projection section which displays a calibration image; a sensing section which senses the displayed calibration image; an area detection section which detects an image display area based on sensing information, and also divides the image display area into a plurality of target areas; a brightness information generation section which generates brightness information which indicates an average brightness index value within each of the target areas that have been divided by the area detection section, based on the sensing information; a correction amount calculation section which calculates a correction amount for input-output characteristic data from each of the target areas, based on the brightness information; and a color non-uniformity correction section which corrects color non-uniformity of the image, based on input-output characteristic data that has been corrected based on the correction amount.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.