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PRINCIPAL COMPONENTS ANALYSIS BASED ILLUMINANT ESTIMATION

  • US 20110169979A1
  • Filed: 09/24/2008
  • Published: 07/14/2011
  • Est. Priority Date: 09/24/2008
  • Status: Active Grant
First Claim
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1. An image apparatus for providing an estimated illuminant of a scene, the image apparatus comprising:

  • a capturing system that captures an input image of the scene, the input image including a plurality of input colors; and

    an illuminant database that includes a separate subspace for each of a plurality of possible illuminants, wherein at least one of the subspaces is created from multi-dimensional color information from its respective possible illuminant that is reduced to the subspace using Principal Components Analysis.

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