Method of automatic white balance adjustment for scanner
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 11, 2014
Issued Date -
N/A
app pub date -
Apr 24, 2012
filing date -
Apr 24, 2012
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method of automatic white balance adjustment for a scanner is described hereinafter. First, a light source provides a white light to make the scanner scan a document and get an initial image of the document. Secondly, red, green and blue chromatic values of a background color are obtained in the initial image. Next, a factor is calculated based on the chromatic values and a calibration value which is stored in a calibration sheet. Lastly, the scanner automatically adjusts a brightness ratio of the red, green and blue lights of the light source according to the factor, and then rescans the document to get a final image which has a processed background color. Therefore, the final image having the background color close to white is in favor of identification. Furthermore, the adjustment is executed in the process of the scanner rescanning the document so that the step of executing adjustment by software can be eliminated.
First Claim
Family
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully