Image analysis – Applications – Biomedical applications
Reexamination Certificate
2008-10-22
2011-12-06
Kiknadze, Irakli (Department: 2882)
Image analysis
Applications
Biomedical applications
Reexamination Certificate
active
08073231
ABSTRACT:
A method for detecting tubing in a radiographic image of a patient, executed at least in part by a control logic processor, obtains radiographic image data for a patient and identifies a region of interest in the radiographic image. A gradient magnitude image of the region of interest is formed and analyzed to identify one or more linear features by defining a band lying substantially within the region of interest and having a center point and repeating a sequence with two or more iterations of assigning a rotation angle for the rotatable band about the center point and computing the ensemble average of gradient magnitude values along each of a plurality of lines extending within the rotatable band at the defined rotation angle, then computing relative magnitudes for the lines. The one or more identified linear features are evaluated according to the results of the ensemble average computing.
REFERENCES:
patent: 2003/0053697 (2003-03-01), Aylward et al.
patent: 2003/0135115 (2003-07-01), Burdette et al.
patent: 2004/0109594 (2004-06-01), Luo et al.
Commonly assigned U.S. Appl. No. 11/644,858 entitled “Computer-Aided Tube and Tip Detection” by Huo et al. (filed Dec. 22, 2006).
Commonly assigned U.S. Appl. No. 11/942,021 and entitled “Image Analysis of Tube Tip Positioning” by Huo et al. (filed Nov. 19, 2007).
Commonly assigned U.S. Appl. No. 12/172,283 entitled “Computer-Aided Tubing Detection” by Huo et al. (filed Jul. 14, 2008).
Commonly assigned U.S. Appl. No. 12/058,803 entitled “Linear Structure Verification for Medical Imaging Applications” to Chen (Mar. 31, 2008).
Chen Shoupu
Huo Zhimin
Carestream Health Inc.
Kiknadze Irakli
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