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Method and apparatus for correcting pixel values in a digital image

  • US 6,104,839 A
  • Filed: 07/10/1996
  • Issued: 08/15/2000
  • Est. Priority Date: 10/16/1995
  • Status: Expired due to Term
First Claim
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1. A method for correcting one or more defect pixels in a source image with non-defect pixels and the defect pixels, each of the defect pixels and the non-defect pixels being represented by at least one defect pixel signal and non-defect pixel signal, respectively, said method comprising the steps of:

  • selecting one of said defect pixels;

    allocating a plurality of line segments through said selected defect pixel, wherein each said line segment is composed of the defect pixels and the non-defect pixels about said selected defect pixel;

    determining at least one representative model of the non-defect pixel signals along each said line segment;

    determining the deviation of the non-defect pixel signals along each said line segment from the model corresponding to the line segment;

    selecting the line segment having the lowest deviation; and

    determining corrected pixel signals for said selected defect pixel based on at least two of the non-defect pixel signals in said selected line segment.

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