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AUTOMATIC GAIN AND EXPOSURE CONTROL USING REGION OF INTEREST DETECTION

  • US 20090003678A1
  • Filed: 06/29/2007
  • Published: 01/01/2009
  • Est. Priority Date: 06/29/2007
  • Status: Active Grant
First Claim
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1. A method, comprising:

  • determining a region of interest in a digital image using any selected from the list of sound source localization, multi-person detection, active speaker detection; and

    determining an exposure/gain metric using the region of interest in response to determining the region of interest is non-empty;

    decreasing gain and/or decreasing exposure in response to determining the image mean is greater than a first predetermined target; and

    increasing gain and/or increasing exposure in response to determining the image mean Is less than a second predetermined target.

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