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- W1582101903 abstract "This paper presents a new on-line automatic X-ray fluo-roscopic C-arm calibration method for intraoperative use. C-arm calibration is an essential prerequisite for accurate X-ray fluoroscopy-based navigation and image-based registration. Our method utilizes a custom-designed calibration ring with a two-plane pattern of fiducials that attaches to the C-arm image intensifier, and an on-line calibration algorithm. The algorithm is robust, fully automatic, and works with images containing anatomy and surgical instruments which cause fiducial occlusions. It consists of three steps: fiducial localization, distortion correction, and camera calibration. Our experimental results show submillimetric accuracy for calibration and tip localization with occluded fiducials." @default.
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- W1582101903 date "2002-01-01" @default.
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- W1582101903 title "Robust Automatic C-Arm Calibration for Fluoroscopy-Based Navigation: A Practical Approach" @default.
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- W1582101903 doi "https://doi.org/10.1007/3-540-45787-9_8" @default.
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