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Method for adjusting color in an image

  • US 6,865,287 B1
  • Filed: 09/08/2000
  • Issued: 03/08/2005
  • Est. Priority Date: 09/09/1999
  • Status: Expired due to Term
First Claim
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1. A method for adjusting colors of an image, in particular of an X-ray image in which an object having sub-objects shown in different colors is depicted, comprising the steps of:

  • determining an X-ray absorption attribute of a plurality of the sub-objects;

    assigning a specific color to each of the plurality of sub-objects on the basis of an average atomic number;

    adjusting a brightness level of one of the specific colors by adjusting each pixel thereof with a determined color proportion of at least one of red, green or blue, whereby the adjustment of the brightness level takes into consideration the sensitivity of the human eye; and

    displaying at least the plurality of sub-objects having the same X-ray absorption attributes on a monitor, whereby adjustment of the brightness level of one of the specific colors causes the human eye to view at least the plurality of sub-objects as having equal brightness levels, wherein the brightness level of at least one of the specific colors, which is assigned to a sub-object, is adjusted if the X-ray absorption attribute associated with the sub-object is substantially equal to the X-ray absorption attribute of another sub-object.

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