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Illumination Detection Using Classifier Chains

  • US 20120207358A1
  • Filed: 01/16/2012
  • Published: 08/16/2012
  • Est. Priority Date: 03/05/2007
  • Status: Abandoned Application
First Claim
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1. A face detection method, comprising:

  • (a) acquiring a digital image(b) extracting a sub-window from said image(c) applying two or more shortened face detection classifier cascades, trained to be selectively sensitive to a characteristic of a face region,(d) based on the applying, determining a probability that a face with a certain form of the characteristic is present within the sub-window;

    (e) based on the determining, applying an extended face detection classifier cascade trained for sensitivity to said form of said characteristic;

    (f) providing a final determination that a face exists within the image sub-window; and

    (g) repeating steps (b)-(e) one or more times for one or more further sub-windows from the image or one or more further characteristics, or both.

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