White balance adjustment device and white balance adjustment method
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United States of America Patent
Stats
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Mar 27, 2012
Grant Date -
Dec 18, 2008
app pub date -
Jun 11, 2008
filing date -
Jun 12, 2007
priority date (Note) -
Expired
status (Latency Note)
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Abstract
To determine white balance convergence in a reliable manner, a white balance adjustment device for adjusting white balance of an input image supplied sequentially in time is provided. The white balance adjustment device comprises first and second integrating units. Each of the integrating units corrects a color component of a preceding input image based on mutually different correction parameter values. The integrating units respectively compute first and second integration values by integrating corrected color components. The first and second values to be used to correct the color component of a subsequent input image are determined by a correction parameter determining unit. The correction parameter determining unit changes the first and second values according to magnitude relationship between the first and second integration values and a benchmark value of the integration value. An image which has undergone the white balance adjustment is generated by correcting the color component of the image with a third value established between the first and second values.
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