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Image processing apparatus and method

  • US 7,158,671 B2
  • Filed: 03/20/2003
  • Issued: 01/02/2007
  • Est. Priority Date: 03/20/2002
  • Status: Expired due to Fees
First Claim
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1. An image processing method comprising the steps of:

  • detecting highlight and shadow points based upon a histogram of an image;

    acquiring a hue angle from average color difference information of image data having luminance levels of the highlight and shadow points;

    revising color information of the highlight and shadow points by adjusting the average color difference information based upon the hue angle; and

    correcting the image based upon the revised color information of the highlight and shadow points.

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