Back to results
US 11,430,110 B2Granted
Radiographic imaging method, radiographic image processing device, and radiographic imaging device
AssigneeProteor
InventorsBriac Colobert, Jean-Charles Gesbert, Vincent Carre
Life of this patent
Estimating the term…
Abstract
A method for the radiographic imaging of a three-dimensional internal structure which forms part of an object located within a field of view, a radiographic image processing device and a radiographic imaging device, which are particularly suitable for locating a characteristic point of an internal structure on a radiographic image.
Claims20
A method for radiographic imaging of a three-dimensional internal structure which forms part of an object located within a field of view, the method comprising:
- a) receiving first image data generated in a three-dimensional reference frame of reference, representative of at least one two-dimensional radiographic image of the internal structure of the object,
- b) receiving second image data generated in the reference frame of reference, representative of a three-dimensional image of an outer boundary of the object,
- c) estimating from the second image data coordinates in the reference frame of reference of first characteristic markers of the internal structure,
- d) calculating, in the reference frame of reference, the three-dimensional shape of a model representing said internal structure from a previously known generic model of said internal structure, this generic model including points corresponding to the first markers, the calculated model being obtained by deformation of the generic model such that said calculated model observes a shape that is closest possible to an isometry of the generic model while keeping the points of the deformed generic model coincident with the first markers,
- e) selecting at least one second characteristic marker of the internal structure to be located on the radiographic image, and for each second marker:
- i) identifying a point belonging to the model calculated in step d) corresponding to the second marker,
- (ii) calculating the coordinates of a projection of this point onto the radiographic image,
- iii) determining using the first image data the coordinates of the second marker on the radiographic image by searching for same in a search zone located around the coordinates of the projection.
5 more elements
A method for radiographic imaging of a three-dimensional internal structure which forms part of an object located within a field of view, the method comprising:
- a) receiving first image data generated in a three-dimensional frame of reference, representative of at least one two-dimensional radiographic image of the internal structure of the object,
- b) receiving second image data generated in a further three-dimensional reference frame of reference, representative of a three-dimensional image of an outer boundary of the object,
- wherein at least one of the receiving steps (a) and (b) comprises a step of transforming the image data received to express the first and second image data in the same reference frame of reference,
- c) estimating from the second image data the coordinates in the reference frame of reference of first characteristic markers of the internal structure,
- d) calculating, in the reference frame of reference, the three-dimensional shape of a model representing said internal structure from a previously known generic model of said internal structure, this generic model including points corresponding to the first markers, the calculated model being obtained by deformation of the generic model such that said calculated model observes a shape that is closest possible to an isometry of the generic model while keeping the points of the deformed generic model coincident with the first markers,
- e) selecting at least one second characteristic marker of the internal structure to be located on the radiographic image, and for each second marker:
- i) identifying a point belonging to the model calculated in step d) corresponding to the second marker,
- (ii) calculating the coordinates of a projection of this point onto the radiographic image,
- iii) determining using the first image data the coordinates of the second marker on the radiographic image by searching for same in a search zone located around the coordinates of the projection.
6 more elements
Dependencies are inferred from the claim text.