vtkThinPlateSplineTransform Class Reference
#include <vtkThinPlateSplineTransform.h>
Inheritance diagram for vtkThinPlateSplineTransform:
[legend]Collaboration diagram for vtkThinPlateSplineTransform:
[legend]List of all members.
Detailed Description
a nonlinear warp transformation
vtkThinPlateSplineTransform describes a nonlinear warp transform defined by a set of source and target landmarks. Any point on the mesh close to a source landmark will be moved to a place close to the corresponding target landmark. The points in between are interpolated smoothly using Bookstein's Thin Plate Spline algorithm.
To obtain a correct TPS warp, use the R2LogR kernel if your data is 2D, and the R kernel if your data is 3D. Or you can specify your own RBF. (Hence this class is more general than a pure TPS transform.)
- Warning:
- 1) The inverse transform is calculated using an iterative method, and is several times more expensive than the forward transform. 2) Whenever you add, subtract, or set points you must call Modified() on the vtkPoints object, or the transformation might not update. 3) Collinear point configurations (except those that lie in the XY plane) result in an unstable transformation.
- See also:
- vtkGridTransform vtkGeneralTransform
- Created by:
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- CVS contributions (if > 5%):
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- CVS logs (CVSweb):
/Hybrid/vtkThinPlateSplineTransform.cxx)/Hybrid/vtkThinPlateSplineTransform.h)
- Tests:
- vtkThinPlateSplineTransform (Tests)
Definition at line 60 of file vtkThinPlateSplineTransform.h.
Member Typedef Documentation
Constructor & Destructor Documentation
| vtkThinPlateSplineTransform::vtkThinPlateSplineTransform |
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Member Function Documentation
| virtual const char* vtkThinPlateSplineTransform::GetClassName |
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| int vtkThinPlateSplineTransform::IsTypeOf |
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const char * |
type |
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Return 1 if this class type is the same type of (or a subclass of) the named class. Returns 0 otherwise. This method works in combination with vtkTypeRevisionMacro found in vtkSetGet.h.
Reimplemented from vtkWarpTransform. |
| virtual int vtkThinPlateSplineTransform::IsA |
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const char * |
type |
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Return 1 if this class is the same type of (or a subclass of) the named class. Returns 0 otherwise. This method works in combination with vtkTypeRevisionMacro found in vtkSetGet.h.
Reimplemented from vtkWarpTransform. |
| void vtkThinPlateSplineTransform::PrintSelf |
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ostream & |
os, |
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vtkIndent |
indent |
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Methods invoked by print to print information about the object including superclasses. Typically not called by the user (use Print() instead) but used in the hierarchical print process to combine the output of several classes.
Reimplemented from vtkWarpTransform. |
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Create an object with Debug turned off, modified time initialized to zero, and reference counting on.
Reimplemented from vtkObject. |
| virtual double vtkThinPlateSplineTransform::GetSigma |
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Specify the 'stiffness' of the spline. The default is 1.0. |
| virtual void vtkThinPlateSplineTransform::SetSigma |
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double |
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Specify the 'stiffness' of the spline. The default is 1.0. |
| void vtkThinPlateSplineTransform::SetBasis |
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int |
basis |
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Specify the radial basis function to use. The default is R2LogR which is appropriate for 2D. Use |R| (SetBasisToR) if your data is 3D. Alternatively specify your own basis function, however this will mean that the transform will no longer be a true thin-plate spline. |
| virtual int vtkThinPlateSplineTransform::GetBasis |
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Specify the radial basis function to use. The default is R2LogR which is appropriate for 2D. Use |R| (SetBasisToR) if your data is 3D. Alternatively specify your own basis function, however this will mean that the transform will no longer be a true thin-plate spline. |
| void vtkThinPlateSplineTransform::SetBasisToR |
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Specify the radial basis function to use. The default is R2LogR which is appropriate for 2D. Use |R| (SetBasisToR) if your data is 3D. Alternatively specify your own basis function, however this will mean that the transform will no longer be a true thin-plate spline.
Definition at line 80 of file vtkThinPlateSplineTransform.h.
References VTK_RBF_R. |
| void vtkThinPlateSplineTransform::SetBasisToR2LogR |
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Specify the radial basis function to use. The default is R2LogR which is appropriate for 2D. Use |R| (SetBasisToR) if your data is 3D. Alternatively specify your own basis function, however this will mean that the transform will no longer be a true thin-plate spline.
Definition at line 81 of file vtkThinPlateSplineTransform.h.
References VTK_RBF_R2LOGR. |
| const char* vtkThinPlateSplineTransform::GetBasisAsString |
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Specify the radial basis function to use. The default is R2LogR which is appropriate for 2D. Use |R| (SetBasisToR) if your data is 3D. Alternatively specify your own basis function, however this will mean that the transform will no longer be a true thin-plate spline. |
| void vtkThinPlateSplineTransform::SetBasisFunction |
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double(* |
U)(double r) |
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| void vtkThinPlateSplineTransform::SetBasisDerivative |
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double(* |
dUdr)(double r, double &dU) |
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| void vtkThinPlateSplineTransform::SetSourceLandmarks |
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vtkPoints * |
source |
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Set the source landmarks for the warp. If you add or change the vtkPoints object, you must call Modified() on it or the transformation might not update. |
| virtual vtkPoints* vtkThinPlateSplineTransform::GetSourceLandmarks |
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Set the source landmarks for the warp. If you add or change the vtkPoints object, you must call Modified() on it or the transformation might not update. |
| void vtkThinPlateSplineTransform::SetTargetLandmarks |
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vtkPoints * |
target |
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Set the target landmarks for the warp. If you add or change the vtkPoints object, you must call Modified() on it or the transformation might not update. |
| virtual vtkPoints* vtkThinPlateSplineTransform::GetTargetLandmarks |
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Set the target landmarks for the warp. If you add or change the vtkPoints object, you must call Modified() on it or the transformation might not update. |
| unsigned long vtkThinPlateSplineTransform::GetMTime |
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| void vtkThinPlateSplineTransform::InternalUpdate |
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| void vtkThinPlateSplineTransform::InternalDeepCopy |
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vtkAbstractTransform * |
transform |
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| void vtkThinPlateSplineTransform::ForwardTransformPoint |
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const float |
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float |
out[3] |
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If the InverseFlag is set to 0, then a call to InternalTransformPoint results in a call to ForwardTransformPoint.
Implements vtkWarpTransform. |
| void vtkThinPlateSplineTransform::ForwardTransformPoint |
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const double |
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double |
out[3] |
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If the InverseFlag is set to 0, then a call to InternalTransformPoint results in a call to ForwardTransformPoint.
Implements vtkWarpTransform. |
| void vtkThinPlateSplineTransform::ForwardTransformDerivative |
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const float |
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float |
out[3], |
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float |
derivative[3][3] |
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Calculate the forward transform as well as the derivative.
Implements vtkWarpTransform. |
| void vtkThinPlateSplineTransform::ForwardTransformDerivative |
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const double |
in[3], |
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double |
out[3], |
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double |
derivative[3][3] |
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Calculate the forward transform as well as the derivative.
Implements vtkWarpTransform. |
Member Data Documentation
The documentation for this class was generated from the following file: