Stray light correction method for imaging light and color measurement system
US6975775B2 · kind B2 · utility
409Cited by
8References
21Claims
0Family size
Assignee
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Key dates
| Filing date | Mar 6, 2002 |
| Grant date | Dec 13, 2005 |
| Priority date | — |
| Expiry date | Dec 18, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/81
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A stray light correction method for image light and color measurement system, uses a solid-state light detector array such as a charge-coupled device to record an image, so that a gray level value for each pixel of the solid-state light detector array is obtained. An average gray level value of the solid-state light detector array is calculated based on the gray level value for each pixel. The average gray level value is further multiplied with a stray light factor to obtain a correction value. The gray level value of each pixel is then subtracted with the correction value, such that the stray light effect can be eliminated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.