Patent ID: 11953451
Assignee: UNIVERSITEIT ANTWERPEN
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 14:
15. A system (20) for inspection of an item, the system comprising:
a radiation imaging system (21) for acquiring a projection image of the item;
a simulator or a precomputed library (22), for providing a plurality of simulated projection images of the item or at least one component thereof, based on a simulation of a numerical three-dimensional model of the item or the at least one item component, in which at least one geometric parameter relating to the relative orientation between the simulated item, a simulated radiation source, and a simulated detection plane varies over the plurality of simulated projection images;
a processor (23), such as a graphical processing unit, for determining a relative orientation of the item with respect to the radiation imaging system, in which determining the relative orientation comprises comparing the projection image to the plurality of simulated projection images, and selecting at least one simulated projection image with the highest image similarity measure to the projection image, said processor furthermore being adapted for determining at least one angle of rotation taking a viewing angle and the determined relative orientation with respect to the selected simulated projection image into account;
an actuator (24), controlled by said processor, for moving the item and/or the radiation imaging system in accordance with the determined at least one angle of rotation such as to position and/or orient the item and/or the radiation imaging system with respect to each other to acquire a further projection image of the item corresponding to a view of the item from the viewing angle.