Apparatus and method for providing a three-dimensional radiographic image of an object
US6834096B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 4, 2002 |
| Grant date | Dec 21, 2004 |
| Priority date | — |
| Expiry date | Apr 4, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2211/404
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An apparatus and method comprises an acquisition of a first series of projected two-dimensional mask images of the object obtained for different positions of a camera around the object; an acquisition of a second series of opacified projected two-dimensional images of the object obtained at the same positions of the camera around the object; a phase of elaboration of a third series of subtracted projected two-dimensional images respectively obtained from the first and second series of images; a reconstruction of a three-dimensional subtracted image from the third series of images and from an analytical algorithm of image reconstruction; a reconstruction of a three-dimensional mask image from the first series of images and from an analytical algorithm of image reconstruction; a phase of identification of defects in the three-dimensional mask image; and elimination of the corresponding voxels in the three-dimensional subtracted image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.