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Image processing apparatus, image processing system, image processing method, and computer-readable storage medium

  • US 7,310,444 B2
  • Filed: 10/07/2005
  • Issued: 12/18/2007
  • Est. Priority Date: 03/13/2001
  • Status: Expired due to Term
First Claim
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1. An image processing apparatus comprising:

  • creating means for creating a histogram on the basis of values of pixels in objective image data;

    first approximating means for approximating values of pixels included within a first image value range by using a first line;

    second approximating means for approximating values of pixels included within a second image value range by using a second line;

    determining means for determining as a representative value, a value of a pixel corresponding to an intersecting point of the first line and the second line; and

    a sensor for converting a radiation ray which has passed through an object to the objective image data,wherein the first pixel value range is a range including values of pixels within an area on the sensor onto which the radiation ray is incident, and the second pixel value range is a range including values of pixels within an area on the sensor onto which the radiation ray is directly incident.

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