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Automatic red eye detection and correction in digital images

  • US 7,310,443 B1
  • Filed: 09/17/2003
  • Issued: 12/18/2007
  • Est. Priority Date: 09/17/2003
  • Status: Expired due to Fees
First Claim
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1. A method for performing red eye correction in an image, comprising:

  • providing a digital image, the digital image being represented by electrical signals in a computer system;

    identifying a red eye region in the digital image; and

    applying a color correction to each pixel in the identified red eye region; and

    wherein the identifying of the red eye region comprises;

    identifying hard red areas, each of the hard red areas comprising a grouping of pixels having a color defined within a polyhedral region of a three dimensional hue-saturation-intensity (HSI) color space having a first axis defining hue, a second axis defining intensity, and a third axis defining saturation; and

    excluding ones of the hard red areas from being identified as the red eye region when a virtual weight center of the hard red area deviates more than a selected percentage from a geometric center of the hard red area, the virtual weight center having an x-coordinate equal to a sum of an x-coordinate of each pixel of the hard red area divided by a number of pixels in the hard red area, and a y-coordinate equal to a sum of a y-coordinate of each of the pixels within the hard red area divided by the number of pixels in the hard red area.

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