StructureModelIndex3d
Indicates the relative prevalence of rod and plate structures in three-dimensional binary image.
Access to parameter description
For an introduction:
This algorithm dilates the input binarized image as shown in the fragmentation index algorithm documentation. The kernelRadius parameter is the number of iterations of dilation performed with a cubic structuring element of size 3.
The Structure Model Index SMI is given by: SMI=6×Sd−SS×Δd×VS where
Reference:
T.Hildebrand, P.Ruegsegger. "Quantification of Bone Microarchitecture with the Structure Model Index". Comput Methods Biomech Biomed Engin., vol. 1, pp. 15-23, 1997.
See also
Access to parameter description
For an introduction:
- section Image Analysis
- section Morphometry
This algorithm dilates the input binarized image as shown in the fragmentation index algorithm documentation. The kernelRadius parameter is the number of iterations of dilation performed with a cubic structuring element of size 3.
The Structure Model Index SMI is given by: SMI=6×Sd−SS×Δd×VS where
- S is the object surface area before dilation
- Sd is the object surface area after dilation
- Δd is the radius of dilation structuring element, in calibration unit
- V is the initial, undilated object volume
Reference:
T.Hildebrand, P.Ruegsegger. "Quantification of Bone Microarchitecture with the Structure Model Index". Comput Methods Biomech Biomed Engin., vol. 1, pp. 15-23, 1997.
See also
Function Syntax
This function returns the outputMeasurement output parameter.
// Function prototype. StructureModelIndexMsr::Ptr structureModelIndex3d( std::shared_ptr< iolink::ImageView > inputImage, int32_t kernelRadius, StructureModelIndexMsr::Ptr outputMeasurement = NULL );
Class Syntax
Parameters
Class Name | StructureModelIndex3d |
---|
Parameter Name | Description | Type | Supported Values | Default Value | |
---|---|---|---|---|---|
inputImage |
The 3D binary input image. | Image | Binary | nullptr | |
kernelRadius |
The kernel radius in voxels of the spherical structuring element used for the dilation. | Int32 | >=1 | 3 | |
outputMeasurement |
The output measurement result. | StructureModelIndexMsr | nullptr |
Object Examples
auto foam_sep = readVipImage( std::string( IMAGEDEVDATA_IMAGES_FOLDER ) + "foam_sep.vip" ); StructureModelIndex3d structureModelIndex3dAlgo; structureModelIndex3dAlgo.setInputImage( foam_sep ); structureModelIndex3dAlgo.setKernelRadius( 3 ); structureModelIndex3dAlgo.execute(); std::cout << "index: " << structureModelIndex3dAlgo.outputMeasurement()->index( ) ;
Function Examples
auto foam_sep = readVipImage( std::string( IMAGEDEVDATA_IMAGES_FOLDER ) + "foam_sep.vip" ); auto result = structureModelIndex3d( foam_sep, 3 ); std::cout << "index: " << result->index( ) ;