IDENTIFYING GRAY REGIONS FOR AUTO WHITE BALANCING

摘要

Examples of the disclosure accurately define a gray region for automatic white balancing. Ratios corresponding to possible gray areas are white balanced before color distance metrics are calculated with respect to white points under different light sources. The color distance metrics of each point in the image data are compared with a predetermined threshold value to identify a gray region. Gray points within a captured image are identified using the gray region and input to any AWB method to accurately white balance the captured image.

主权项

1. A system, comprising:
a sensor configuration component that when executed causes at least one processor to define a gray region for an image sensor through:
accessing image data,identifying a red/green ratio and a blue/green ratio for a point in the image data,identifying white points in the image data, andwhite balancing the point in the image data using the white points to produce white-balanced data, wherein said white balancing is performed through application of one or more white-balancing gains to at least one of the red/green ratio or the blue/green ratio associated with the point; and a camera component that when executed causes the at least one processor to identify one or more gray points in the image data based on the white-balanced data.