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Modification of red-eye-effect in digital image

  • US 7,224,850 B2
  • Filed: 05/13/2003
  • Issued: 05/29/2007
  • Est. Priority Date: 05/13/2003
  • Status: Expired due to Fees
First Claim
Patent Images

1. A process at least partially implemented by a computer for automatic red-eye artifact modification in a digital representation of an image comprising:

  • detecting, by a processor, regions corresponding to facial images within the digital representation; and

    locating, by a processor, red-eye regions within the detected regions, the locating comprising;

    denoting red pixels as satisfying R>

    50;

    R/(R+G+B)>

    0.40;

    G/(R+G+B)<

    0.31 and B/(R+G+B)>

    0.36;

    determining when RGB values for a region about a denoted red pixel satisfy conditions;

    G/(R+G+B)>

    0.4(Original) 0 or B/(R+G+B)>

    0.45;

    when the RGB values for the region satisfy the conditions, removing the region from a pool of red-eye candidate regions; and

    when the RGB values for the region do not satisfy the conditions, maintaining the regions in the pool.

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