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Method for determining the color of a scene illuminant from a color image

  • US 4,685,071 A
  • Filed: 03/18/1985
  • Issued: 08/04/1987
  • Est. Priority Date: 03/18/1985
  • Status: Expired due to Term
First Claim
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1. A method for determining the color of a scene illuminant from a color photographic image, of a scene containing a plurality of differently colored specularly reflecting surfaces, comprising the steps of:

  • scanning the color photographic image to produce a digital color image;

    transforming the digital color image to a chromaticity space; and

    processing the transformed digital color image to detect the color of specularly reflected light in the scene, the color of the specularly reflected light corresponding to the color of the scene illuminant.

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