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DIGITAL IMAGE EXPOSURE CORRECTION

  • US 20100329558A1
  • Filed: 09/02/2010
  • Published: 12/30/2010
  • Est. Priority Date: 02/27/2003
  • Status: Active Grant
First Claim
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1. A method for selecting a set of features for adjusting the exposure of images, the method comprising:

  • placing a set of features in a master feature set M;

    initializing a current feature set C to a null value;

    performing the following for each feature F in the master feature set M;

    adding the current feature set C and the feature F to form a temporary feature set S;

    calculating an error E using the set S as a feature set; and

    performing at least one of the following;

    determining that the error E is less than a minimum error EMIN, assigning the value of E to EMIN and recording the identity of feature F in a variable FMIN; and

    determining that the error E is greater than a minimum error EMIN, leaving the values of EMIN and FMIN unchanged;

    performing one of the following;

    determining that EMIN is less than a global error EG, assigning the value of EMIN to EG, adding the feature F recorded FMIN to the set C, and deleting the feature F recorded in FMIN from the set M, and determining that the set M is empty; and

    determining that EMIN is less than a global error EG, and leaving the value EG, the set C, and the set M unchanged; and

    selecting the set C as the set of features for adjusting the exposure of images.

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