发明名称 |
Method and apparatus for registration of virtual endoscopic images |
摘要 |
A method for registration of virtual endoscopy images in first and second patient positions comprises performing colon segmentation and feature extraction, including centerline and colon surface data for each of the images; resampling the centerline and colon surface data; computing respective local descriptors; pairing point correspondences on the centerlines between the first and second images by minimal cost matching; extrapolating the centerline point correspondences to a 3-dimensional/3-dimensional (3D/3D) transformation between the first and second images. The method also includes selecting a position for a virtual endoscope in one of the images; associating an orthogonal reference frame with the virtual endoscope; and applying the 3D/3D transformation to the orthogonal reference frame so as to derive a corresponding transformed reference frame for the virtual endoscope in the other of the images.
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申请公布号 |
US7300398(B2) |
申请公布日期 |
2007.11.27 |
申请号 |
US20040915501 |
申请日期 |
2004.08.09 |
申请人 |
SIEMENS MEDICAL SOLUTIONS USA, INC. |
发明人 |
CHEFD'HOTEL CHRISTOPHE;GEIGER BERNHARD |
分类号 |
A61B1/00;A61B1/04;G06K9/00;G06T7/00 |
主分类号 |
A61B1/00 |
代理机构 |
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