X-ray or gamma ray systems or devices – Specific application – Absorption
Patent
1998-02-11
2000-06-20
Bruce, David V.
X-ray or gamma ray systems or devices
Specific application
Absorption
378 8, 378 15, 378 90, G01N 2304
Patent
active
060786426
ABSTRACT:
A method and apparatus for detecting and classifying objects in computed tomography (CT) data are disclosed. A connectivity process can be applied to voxels in the data to combine them into objects. A dilation function can then be performed on the eroded object to replace surface voxels removed by erosion. A corrected mass using the mean eroded density of the object can be computed and compared to mass thresholds to classify the object as to whether it poses a threat. Multiple mass thresholds can be used, each of which is associated with a particular density range based on the density of an expected threat object.
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Bechwati Ibrahim M.
Crawford Carl R.
Hiraoglu Muzaffer
Simanovsky Sergey
Analogice Corporation
Bruce David V.
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