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Sampling images for color balance information

  • US 7,486,819 B2
  • Filed: 12/23/2003
  • Issued: 02/03/2009
  • Est. Priority Date: 12/23/2003
  • Status: Active Grant
First Claim
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1. A method for performing a white balance operation on an image, comprising:

  • comparing a value of each pixel in the image against a value of every pixel for detecting the same color within a Chebyshev distance of at least one pixel to determine whether each pixel is substantially at or near the edge of a monochromatic region;

    selecting only pixels that are in either multichromatic or monochromatic regions and substantially at or near the edge of a monochromatic region; and

    using the selected pixels to obtain color balance information on the image.

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