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US 2013/0076748 A1Published application
3d visualization of medical 3d image data
AssigneeSiemens Aktiengesellschaft
InventorNorbert RAHN
Life of this patent
Estimating the term…
Abstract
A method and apparatus are disclosed for displaying medical 3D image data. In an embodiment of the method, for every image voxel of the 3D image data which is assigned to a number g of the n regions, where g≧2: the transfer functions T1(x), T2(x), . . . , Tg(x) assigned to the g regions are applied to the image voxel value x. Each of the g transfer functions T1, . . . g(x) assign the number m of parameter values to the image voxel value x, and mean parameter values Pl(x) are formed from the parameter values Pj,l(x). Regions visualized here are visualized on the basis of the mean parameter values Pl(x) for each image voxel of the 3D image data, which is assigned to the number g of the n regions.
Claims11
A method for displaying medical 3D image data, comprising:
- supplying the 3D image data;
- determining a number (n) of regions in the 3D image data, where n≧2, with image voxels of the 3D image data being assigned correspondingly to the determined regions;
- defining, for each of the n regions, a transfer function Tk(x) where k=1, . . . , n, with a transfer function Tk(x) allocating parameter values Pk,l(x) to an image voxel as a function of its image voxel value x for a number m of parameters Pl:
- x→Tk(x)=Pk,l(x) (1)
- where:
- k=1, . . . , n
- l=1, . . . , m
- n≧2, and
- m≧1,
- generating a visualization of the 3D image data or selected parts of the 3D image data using a volume rendering method, with regions visualized here being visualized on the basis of the transfer function Tk(x) allocated respectively to the regions and the parameter values Pk,l(x) assigned respectively to the transfer functions;
- and
- displaying the generated visualization, wherein for each image voxel of the 3D image data, which is assigned to a number g of the n regions, where g≧2:
- the transfer functions T1(x), T2(x), . . . , Tg(x) assigned to the g regions are applied to the image voxel value x, with each of the g transfer functions T1, . . . g(x) assigning the number m of parameter values to the image voxel value x:
- x→Tj(x)=Pj,l(x) (2)
- where:
- j=1, . . . , g
- l=1, . . . , m
- g≧2≦n, and
- m≧1,
- with mean parameter values Pl(x) being formed from the parameter values Pj,l(x), where l=1, . . . , m according to:
- P
- _
- l
-
- (
- x
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- =
- 1
- g
- ·
- ∑
- t
- =
- 1
- g
-
-
- P
- t
- ,
- l
-
- (
- x
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- ,
- (
- 3
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- and
- with regions visualized here being visualized on the basis of the mean parameter values Pl(x) for each image voxel of the 3D image data, which is assigned to the number g of the n regions.
49 more elements
An apparatus for the visualization of medical 3D image data, comprising:
- a first device, configured to supply the 3D image data;
- a second device, configured to determine a number n of regions in the 3D image data, where n≧2, with image voxels of the 3D image data being assigned correspondingly to the determined regions;
- a third device, configured to define a transfer function Tk(x) for each of the n regions, where k=1, . . . , n, with a transfer function Tk(x) allocating parameter values Pk,l(x) to an image voxel as a function of its image voxel value x for a number m of parameters Pl:
- x→Tk(x)=Pk,l(x) (1)
- where:
- k=1, . . . , n
- l=1, . . . , m
- n≧2, and
- m≧1
- with the transfer functions T1(x), T2(x), . . . , Tg(x) assigned to the g regions being applied to the image voxel value x for each image voxel of the 3D image data, which is assigned to a number g of the n regions, where g≧2, with each of the g transfer functions T1, . . . g(x) assigning the number m of parameter values to the image voxel value x:
- x→Tj(x)=Pj,l(x) (2)
- where:
- j=1, . . . , g
- l=1, . . . , m
- g≧2≦n,
- m≧1, and
- with mean parameter values Pl(x) being formed from the parameter values Pj,l(x), where l=1, . . . , m according to:
- P
- _
- l
-
- (
- x
- )
- =
- 1
- g
- ·
- ∑
- t
- =
- 1
- g
-
-
- P
- t
- ,
- l
-
- (
- x
- )
- ,
- (
- 3
- )
- a fourth device, configured to determine a visualization of the 3D image data or selected parts of the 3D image data using a volume rendering method, with regions visualized here being visualized on the basis of the transfer function Tk(x) allocated respectively to the regions and the parameter values Pk,l(x) assigned respectively to the transfer functions and with regions visualized here being visualized on the basis of the mean parameter values Pl(x) for each image voxel of the 3D image data assigned to the number g of the n regions;
- and
- a fifth device, configured to display the visualization.
47 more elements
An apparatus for the visualization of medical 3D image data, comprising:
- means for supplying the 3D image data;
- means for determining a number n of regions in the 3D image data, where n≧2, with image voxels of the 3D image data being assigned correspondingly to the determined regions;
- means for defining a transfer function Tk(x) for each of the n regions, where k=1, . . . , n, with a transfer function Tk(x) allocating parameter values Pk,l(x) to an image voxel as a function of its image voxel value x for a number m of parameters Pl:
- x→Tk(x)=Pk,l(x) (1)
- where:
- k=1, . . . , n
- l=1, . . . , m
- n≧2, and
- m≧1
- with the transfer functions T1(x), T2(x), . . . , Tg(x) assigned to the g regions being applied to the image voxel value x for each image voxel of the 3D image data, which is assigned to a number g of the n regions, where g≧2, with each of the g transfer functions T1, . . . g(x) assigning the number m of parameter values to the image voxel value x:
- x→Tj(x)=Pj,l(x) (2)
- where:
- j=1, . . . , g
- l=1, . . . , m
- g≧2≦n,
- m≧1, and
- with mean parameter values Pl(x) being formed from the parameter values Pj,l(x), where l=1, . . . , m according to:
- P
- _
- l
-
- (
- x
- )
- =
- 1
- g
- ·
- ∑
- t
- =
- 1
- g
-
-
- P
- t
- ,
- l
-
- (
- x
- )
- ,
- (
- 3
- )
- means for determining a visualization of the 3D image data or selected parts of the 3D image data using a volume rendering method, with regions visualized here being visualized on the basis of the transfer function Tk(x) allocated respectively to the regions and the parameter values Pk,l(x) assigned respectively to the transfer functions and with regions visualized here being visualized on the basis of the mean parameter values Pl(x) for each image voxel of the 3D image data assigned to the number g of the n regions;
- and
- means for displaying the visualization.
47 more elements
Dependencies are inferred from the claim text.