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Image processing method and computer-readable recording medium containing image processing program

  • US 7,460,700 B2
  • Filed: 07/26/2004
  • Issued: 12/02/2008
  • Est. Priority Date: 07/24/2003
  • Status: Expired due to Fees
First Claim
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1. An image processing method which processes 3-dimensional CT data obtained from a 3-dimensional object, comprising:

  • an integrated value calculating step of calculating an integrated value of a predetermined number of 3-dimensional CT data elements which are consecutive with a currently observed 3-dimensional CT data element being set as a starting point, for each of a plurality of directions with the currently observed 3-dimensional CT data element being set as a starting point;

    a sum calculating step of calculating both a sum of a predetermined number of upper-rank integrated values among respective integrated values calculated for the plurality of directions in the integrated value calculating step and a sum of a predetermined number of lower-rank integrated values among the respective integrated values calculated for the plurality of directions in the integrated value calculating step;

    a correction step of correcting a currently observed 3-dimensional CT data element based on the sum of the predetermined number of upper-rank integrated values and the sum of the predetermined number of lower-rank integrated values; and

    a judgment step of comparing the corrected 3-dimensional CT data element obtained in the correction step with a predetermined threshold value, and determining the currently observed 3-dimensional CT data element as being data of a processing target when the corrected 3-dimensional CT data element is larger than the threshold value.

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