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Digital still camera system and method

  • US 20020135683A1
  • Filed: 12/20/2000
  • Published: 09/26/2002
  • Est. Priority Date: 12/20/1999
  • Status: Abandoned Application
First Claim
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1. A method of tone-scaling an image, comprising the steps of:

  • (a) providing an M by N pixel image where M and N are positive integers and each pixel has an intensity in the range from 0 to K;

    (b) determining a scaled cumulative distribution function T(X) for X in the range 0 to K and T(X) with values in the range 0 to K, wherein T(X) equals K multiplied by the number of the pixels in the image with intensity less than or equal to X and then divided by MN;

    (c) selecting a parameter A in the range 0 to 1;

    (d) adjusting the intensity of a pixel of the image of step (a) from Z to AT(Z)+(1−

    A)Z.

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