Image analysis – Applications – Biomedical applications
Patent
1994-10-07
1998-05-05
Mancuso, Joseph
Image analysis
Applications
Biomedical applications
1286532, 378 21, 382131, G06K 900
Patent
active
057487685
ABSTRACT:
A method and apparatus to calibrate and correct magnetic and geometrical distortions in an imaging system, specifically a computed tomography (CT) system, includes a distortion measuring object which is placed on the surface of an image intensifier. An image frame of the distortion measuring object is generated, and a correction table is generated to correct the image frame. Once the correction table has been generated using the distortion measuring object, subsequent image frames are corrected using the correction values in the correction tables. A method and apparatus to calibrate and correct offsets, veiling glare and scatter in an imaging system, specifically a computed tomography system. An image frame is generated and areas not directly impinged by direct radiation are used to correct areas of the detector that are directly impinged. A method and apparatus for correcting and calibrating an imaging system, specifically a computed tomography system. An image frame is corrected for distortions and for the effects of offsets, veiling glare and scatter.
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Drawert Bruce M.
Silver Michael D.
Sivers Erlvada A.
Kabushiki Kaisha Toshiba
Mancuso Joseph
Patel Jayanti K.
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