Automatic white balance statistics collection

Details Automatic white balance statistics collection Automatic white balance statistics collection

2011-03-22

2011-03-22

Alavi, Amir (Department: 2624)

Image analysis

Color image processing

C358S516000

Reexamination Certificate

active

07912279

ABSTRACT:
Automatic white balance of captured images can be performed based on a gray world assumption. One aspect relates to an apparatus comprising a collection module and a processor. The collection module is configured to accumulate (a) red/green and blue/green color ratio values of a plurality of pixels in a captured image for each cluster of a plurality of clusters and (b) a number of pixels having red/green and blue/green color ratios associated with each cluster, the clusters comprising daylight, fluorescent, incandescent, and a outdoor green zone. The processor is configured to determine which cluster has a highest accumulated number of pixels, and use the cluster with the highest accumulated number of pixels to perform white balancing for the captured image.

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International Search Report—PCT/US2007/082748, International Search Authority—European Patent Office—May 26, 2008.
Written Opinion- PCT/US2007/082748, International Search Authority—European Patent Office—May 26, 2008.

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