X-ray computed tomography (ct) system for detecting thin...

Details X-ray computed tomography (ct) system for detecting thin... X-ray computed tomography (ct) system for detecting thin...

G - Physics

01

N

G01N 23/04 (2006.01) G01N 23/05 (2006.01)

Patent

CA 2203110

A technique to ascertain the presence or absence of an object in a three-dimensional volume, such as explosives in the side walls of luggage. The technique involves radiation scanning the three-dimensional volume to determine a property of each of a plurality of voxels representing the three-dimensional volume and to identify voxels having similar values of the property to identify a contiguous group of voxels having the similar values. Then, the contiguous group of voxels is identified as containing the object if a characteristic (such as mass and/or volume) of the contiguous group has a predetermined value.

On détermine la présence d'un objet par un balayage par des rayons X d'un volume tridimensionnel pour déterminer une propriété des voxels représentant le volume (S1), pour identifier des voxels ayant des valeurs similaires de la propriété (S2), et pour identifier des groupes contigus de voxels ayant des valeurs similaires (S3). Ensuite, le groupe contigu de voxels est identifié comme contenant l'objet si une caractéristique, par exemple la masse (S7) et/ou le volume (S5) du groupe contigu a une valeur prédéterminée.

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