NDLI: Analytic calibration of cone-beam scanners

Content Provider	IEEE Xplore Digital Library
Author	Strubel, G. Clackdoyle, R. Mennessier, C. Noo, F.
Copyright Year	2005
Description	Author affiliation: LETI/DTBS, CEA-DRT, Grenoble (Strubel, G.)
Abstract	We are investigating a direct analytic method of determining all geometric calibration parameters for a cone-beam scanner. Each projection is independently calibrated using a common calibration object that remains fixed in the laboratory frame. We make no assumptions or restrictions on the path of the cone vertex (e.g. the X-ray source) or the movement of the detector but we do assume a known field-of-view common to all views. The method uses a calibration object consisting of 30 small balls lying on 3 orthogonal concentric circles and one additional ball at the center of the calibration object. From parametrizations of the 3 image ellipses it is possible to analytically obtain expressions for all the calibration parameters. Using simulations we present our first results with this method, and by adding uncertainty to the locations of the projected balls, we determine the stability of the method. Our ultimate goal is to develop a completely automated calibration procedure requiring no user intervention whatsoever, and providing a seamless link to the reconstruction procedure
Starting Page	2731
Ending Page	2735
File Size	243857
Page Count	5
File Format	PDF
ISBN	0780392213
ISSN	10957863
DOI	10.1109/NSSMIC.2005.1596901
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-10-23
Publisher Place	Puerto Rico
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Calibration Laboratories Detectors Equations Object detection Computer vision Nuclear and plasma sciences Cameras Image converters Collimators
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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