VTK
9.1.0
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perform sinc interpolation on images More...
#include <vtkImageSincInterpolator.h>
Public Types | |
typedef vtkAbstractImageInterpolator | Superclass |
Public Types inherited from vtkAbstractImageInterpolator | |
typedef vtkObject | Superclass |
Public Member Functions | |
virtual vtkTypeBool | IsA (const char *type) |
Return 1 if this class is the same type of (or a subclass of) the named class. | |
vtkImageSincInterpolator * | NewInstance () const |
void | PrintSelf (ostream &os, vtkIndent indent) override |
Methods invoked by print to print information about the object including superclasses. | |
void | SetWindowHalfWidth (int n) |
Set the window half-width, this must be an integer between 1 and 16, with a default value of 3. | |
int | GetWindowHalfWidth () |
void | SetUseWindowParameter (int val) |
Turn this on in order to use SetWindowParameter. | |
void | UseWindowParameterOn () |
void | UseWindowParameterOff () |
int | GetUseWindowParameter () |
void | SetWindowParameter (double parm) |
Set the alpha parameter for the Kaiser window function. | |
double | GetWindowParameter () |
void | ComputeSupportSize (const double matrix[16], int support[3]) override |
Get the support size for use in computing update extents. | |
void | SetAntialiasing (int antialiasing) |
Turn on antialiasing. | |
void | AntialiasingOn () |
void | AntialiasingOff () |
int | GetAntialiasing () |
void | SetRenormalization (int renormalization) |
Turn off renormalization. | |
void | RenormalizationOn () |
void | RenormalizationOff () |
int | GetRenormalization () |
bool | IsSeparable () override |
Returns true if the interpolator supports weight precomputation. | |
void | FreePrecomputedWeights (vtkInterpolationWeights *&weights) override |
Free the precomputed weights. | |
virtual void | SetWindowFunction (int mode) |
The window function to use. | |
void | SetWindowFunctionToLanczos () |
The window function to use. | |
void | SetWindowFunctionToKaiser () |
The window function to use. | |
void | SetWindowFunctionToCosine () |
The window function to use. | |
void | SetWindowFunctionToHann () |
The window function to use. | |
void | SetWindowFunctionToHamming () |
The window function to use. | |
void | SetWindowFunctionToBlackman () |
The window function to use. | |
void | SetWindowFunctionToBlackmanHarris3 () |
The window function to use. | |
void | SetWindowFunctionToBlackmanHarris4 () |
The window function to use. | |
void | SetWindowFunctionToNuttall () |
The window function to use. | |
void | SetWindowFunctionToBlackmanNuttall3 () |
The window function to use. | |
void | SetWindowFunctionToBlackmanNuttall4 () |
The window function to use. | |
int | GetWindowFunction () |
The window function to use. | |
virtual const char * | GetWindowFunctionAsString () |
The window function to use. | |
void | SetBlurFactors (double x, double y, double z) |
Blur the image by widening the windowed sinc kernel by the specified factors for the x, y, and z directions. | |
void | SetBlurFactors (const double f[3]) |
Blur the image by widening the windowed sinc kernel by the specified factors for the x, y, and z directions. | |
void | GetBlurFactors (double f[3]) |
Blur the image by widening the windowed sinc kernel by the specified factors for the x, y, and z directions. | |
double * | GetBlurFactors () |
Blur the image by widening the windowed sinc kernel by the specified factors for the x, y, and z directions. | |
void | PrecomputeWeightsForExtent (const double matrix[16], const int extent[6], int newExtent[6], vtkInterpolationWeights *&weights) override |
If the data is going to be sampled on a regular grid, then the interpolation weights can be precomputed. | |
void | PrecomputeWeightsForExtent (const float matrix[16], const int extent[6], int newExtent[6], vtkInterpolationWeights *&weights) override |
If the data is going to be sampled on a regular grid, then the interpolation weights can be precomputed. | |
Public Member Functions inherited from vtkAbstractImageInterpolator | |
virtual vtkTypeBool | IsA (const char *type) |
Return 1 if this class is the same type of (or a subclass of) the named class. | |
vtkAbstractImageInterpolator * | NewInstance () const |
void | PrintSelf (ostream &os, vtkIndent indent) override |
Methods invoked by print to print information about the object including superclasses. | |
virtual void | Initialize (vtkDataObject *data) |
Initialize the interpolator with the data that you wish to interpolate. | |
virtual void | ReleaseData () |
Release any data stored by the interpolator. | |
void | DeepCopy (vtkAbstractImageInterpolator *obj) |
Copy the interpolator. | |
virtual void | Update () |
Update the interpolator. | |
double | Interpolate (double x, double y, double z, int component) |
Get the result of interpolating the specified component of the input data, which should be set to zero if there is only one component. | |
bool | Interpolate (const double point[3], double *value) |
Sample the input data. | |
void | SetOutValue (double outValue) |
The value to return when the point is out of bounds. | |
double | GetOutValue () |
void | SetTolerance (double tol) |
The tolerance to apply when checking whether a point is out of bounds. | |
double | GetTolerance () |
void | SetComponentOffset (int offset) |
This method specifies which component of the input will be interpolated, or if ComponentCount is also set, it specifies the first component. | |
int | GetComponentOffset () |
void | SetComponentCount (int count) |
This method specifies the number of components to extract. | |
int | GetComponentCount () |
int | ComputeNumberOfComponents (int inputComponents) |
Compute the number of output components based on the ComponentOffset, ComponentCount, and the number of components in the input data. | |
int | GetNumberOfComponents () |
Get the number of components that will be returned when Interpolate() is called. | |
void | SetSlidingWindow (bool x) |
Enable sliding window for separable kernels. | |
void | SlidingWindowOn () |
void | SlidingWindowOff () |
bool | GetSlidingWindow () |
virtual void | ComputeSupportSize (const double matrix[16], int support[3])=0 |
Get the support size for use in computing update extents. | |
virtual bool | IsSeparable ()=0 |
True if the interpolation is separable, which means that the weights can be precomputed in order to accelerate the interpolation. | |
virtual void | FreePrecomputedWeights (vtkInterpolationWeights *&weights) |
Free the weights that were provided by PrecomputeWeightsForExtent. | |
void | InterpolateIJK (const double point[3], double *value) |
A version of Interpolate that takes structured coords instead of data coords. | |
void | InterpolateIJK (const float point[3], float *value) |
A version of Interpolate that takes structured coords instead of data coords. | |
bool | CheckBoundsIJK (const double x[3]) |
Check an x,y,z point to see if it is within the bounds for the structured coords of the image. | |
bool | CheckBoundsIJK (const float x[3]) |
Check an x,y,z point to see if it is within the bounds for the structured coords of the image. | |
void | SetBorderMode (int mode) |
The border mode (default: clamp). | |
void | SetBorderModeToClamp () |
The border mode (default: clamp). | |
void | SetBorderModeToRepeat () |
The border mode (default: clamp). | |
void | SetBorderModeToMirror () |
The border mode (default: clamp). | |
int | GetBorderMode () |
The border mode (default: clamp). | |
const char * | GetBorderModeAsString () |
The border mode (default: clamp). | |
void | InterpolateRow (vtkInterpolationWeights *&weights, int xIdx, int yIdx, int zIdx, double *value, int n) |
Get a row of samples, using the weights that were precomputed by PrecomputeWeightsForExtent. | |
void | InterpolateRow (vtkInterpolationWeights *&weights, int xIdx, int yIdx, int zIdx, float *value, int n) |
Get a row of samples, using the weights that were precomputed by PrecomputeWeightsForExtent. | |
virtual double * | GetSpacing () |
Get the spacing of the data being interpolated. | |
virtual void | GetSpacing (double &, double &, double &) |
Get the spacing of the data being interpolated. | |
virtual void | GetSpacing (double[3]) |
Get the spacing of the data being interpolated. | |
virtual double * | GetOrigin () |
Get the origin of the data being interpolated. | |
virtual void | GetOrigin (double &, double &, double &) |
Get the origin of the data being interpolated. | |
virtual void | GetOrigin (double[3]) |
Get the origin of the data being interpolated. | |
virtual int * | GetExtent () |
Get the extent of the data being interpolated. | |
virtual void | GetExtent (int &, int &, int &, int &, int &, int &) |
Get the extent of the data being interpolated. | |
virtual void | GetExtent (int[6]) |
Get the extent of the data being interpolated. | |
Public Member Functions inherited from vtkObject | |
vtkBaseTypeMacro (vtkObject, vtkObjectBase) | |
virtual void | DebugOn () |
Turn debugging output on. | |
virtual void | DebugOff () |
Turn debugging output off. | |
bool | GetDebug () |
Get the value of the debug flag. | |
void | SetDebug (bool debugFlag) |
Set the value of the debug flag. | |
virtual void | Modified () |
Update the modification time for this object. | |
virtual vtkMTimeType | GetMTime () |
Return this object's modified time. | |
void | PrintSelf (ostream &os, vtkIndent indent) override |
Methods invoked by print to print information about the object including superclasses. | |
void | RemoveObserver (unsigned long tag) |
void | RemoveObservers (unsigned long event) |
void | RemoveObservers (const char *event) |
void | RemoveAllObservers () |
vtkTypeBool | HasObserver (unsigned long event) |
vtkTypeBool | HasObserver (const char *event) |
int | InvokeEvent (unsigned long event) |
int | InvokeEvent (const char *event) |
unsigned long | AddObserver (unsigned long event, vtkCommand *, float priority=0.0f) |
Allow people to add/remove/invoke observers (callbacks) to any VTK object. | |
unsigned long | AddObserver (const char *event, vtkCommand *, float priority=0.0f) |
Allow people to add/remove/invoke observers (callbacks) to any VTK object. | |
vtkCommand * | GetCommand (unsigned long tag) |
Allow people to add/remove/invoke observers (callbacks) to any VTK object. | |
void | RemoveObserver (vtkCommand *) |
Allow people to add/remove/invoke observers (callbacks) to any VTK object. | |
void | RemoveObservers (unsigned long event, vtkCommand *) |
Allow people to add/remove/invoke observers (callbacks) to any VTK object. | |
void | RemoveObservers (const char *event, vtkCommand *) |
Allow people to add/remove/invoke observers (callbacks) to any VTK object. | |
vtkTypeBool | HasObserver (unsigned long event, vtkCommand *) |
Allow people to add/remove/invoke observers (callbacks) to any VTK object. | |
vtkTypeBool | HasObserver (const char *event, vtkCommand *) |
Allow people to add/remove/invoke observers (callbacks) to any VTK object. | |
template<class U , class T > | |
unsigned long | AddObserver (unsigned long event, U observer, void(T::*callback)(), float priority=0.0f) |
Overloads to AddObserver that allow developers to add class member functions as callbacks for events. | |
template<class U , class T > | |
unsigned long | AddObserver (unsigned long event, U observer, void(T::*callback)(vtkObject *, unsigned long, void *), float priority=0.0f) |
Overloads to AddObserver that allow developers to add class member functions as callbacks for events. | |
template<class U , class T > | |
unsigned long | AddObserver (unsigned long event, U observer, bool(T::*callback)(vtkObject *, unsigned long, void *), float priority=0.0f) |
Allow user to set the AbortFlagOn() with the return value of the callback method. | |
int | InvokeEvent (unsigned long event, void *callData) |
This method invokes an event and return whether the event was aborted or not. | |
int | InvokeEvent (const char *event, void *callData) |
This method invokes an event and return whether the event was aborted or not. | |
Public Member Functions inherited from vtkObjectBase | |
const char * | GetClassName () const |
Return the class name as a string. | |
virtual vtkTypeBool | IsA (const char *name) |
Return 1 if this class is the same type of (or a subclass of) the named class. | |
virtual vtkIdType | GetNumberOfGenerationsFromBase (const char *name) |
Given the name of a base class of this class type, return the distance of inheritance between this class type and the named class (how many generations of inheritance are there between this class and the named class). | |
virtual void | Delete () |
Delete a VTK object. | |
virtual void | FastDelete () |
Delete a reference to this object. | |
void | InitializeObjectBase () |
void | Print (ostream &os) |
Print an object to an ostream. | |
virtual void | Register (vtkObjectBase *o) |
Increase the reference count (mark as used by another object). | |
virtual void | UnRegister (vtkObjectBase *o) |
Decrease the reference count (release by another object). | |
int | GetReferenceCount () |
Return the current reference count of this object. | |
void | SetReferenceCount (int) |
Sets the reference count. | |
bool | GetIsInMemkind () const |
A local state flag that remembers whether this object lives in the normal or extended memory space. | |
virtual void | PrintHeader (ostream &os, vtkIndent indent) |
Methods invoked by print to print information about the object including superclasses. | |
virtual void | PrintTrailer (ostream &os, vtkIndent indent) |
Methods invoked by print to print information about the object including superclasses. | |
Static Public Member Functions | |
static vtkImageSincInterpolator * | New () |
static vtkTypeBool | IsTypeOf (const char *type) |
static vtkImageSincInterpolator * | SafeDownCast (vtkObjectBase *o) |
Static Public Member Functions inherited from vtkAbstractImageInterpolator | |
static vtkTypeBool | IsTypeOf (const char *type) |
static vtkAbstractImageInterpolator * | SafeDownCast (vtkObjectBase *o) |
Static Public Member Functions inherited from vtkObject | |
static vtkObject * | New () |
Create an object with Debug turned off, modified time initialized to zero, and reference counting on. | |
static void | BreakOnError () |
This method is called when vtkErrorMacro executes. | |
static void | SetGlobalWarningDisplay (int val) |
This is a global flag that controls whether any debug, warning or error messages are displayed. | |
static void | GlobalWarningDisplayOn () |
This is a global flag that controls whether any debug, warning or error messages are displayed. | |
static void | GlobalWarningDisplayOff () |
This is a global flag that controls whether any debug, warning or error messages are displayed. | |
static int | GetGlobalWarningDisplay () |
This is a global flag that controls whether any debug, warning or error messages are displayed. | |
Static Public Member Functions inherited from vtkObjectBase | |
static vtkTypeBool | IsTypeOf (const char *name) |
Return 1 if this class type is the same type of (or a subclass of) the named class. | |
static vtkIdType | GetNumberOfGenerationsFromBaseType (const char *name) |
Given a the name of a base class of this class type, return the distance of inheritance between this class type and the named class (how many generations of inheritance are there between this class and the named class). | |
static vtkObjectBase * | New () |
Create an object with Debug turned off, modified time initialized to zero, and reference counting on. | |
static void | SetMemkindDirectory (const char *directoryname) |
The name of a directory, ideally mounted -o dax, to memory map an extended memory space within. | |
static bool | GetUsingMemkind () |
A global state flag that controls whether vtkObjects are constructed in the usual way (the default) or within the extended memory space. | |
Protected Member Functions | |
virtual vtkObjectBase * | NewInstanceInternal () const |
vtkImageSincInterpolator () | |
~vtkImageSincInterpolator () override | |
void | InternalUpdate () override |
Update the interpolator. | |
void | InternalDeepCopy (vtkAbstractImageInterpolator *obj) override |
Copy the interpolator. | |
virtual void | BuildKernelLookupTable () |
Build the lookup tables used for the interpolation. | |
virtual void | FreeKernelLookupTable () |
Free the kernel lookup tables. | |
void | GetInterpolationFunc (void(**doublefunc)(vtkInterpolationInfo *, const double[3], double *)) override |
Get the interpolation functions. | |
void | GetInterpolationFunc (void(**floatfunc)(vtkInterpolationInfo *, const float[3], float *)) override |
Get the interpolation functions. | |
void | GetRowInterpolationFunc (void(**doublefunc)(vtkInterpolationWeights *, int, int, int, double *, int)) override |
Get the row interpolation functions. | |
void | GetRowInterpolationFunc (void(**floatfunc)(vtkInterpolationWeights *, int, int, int, float *, int)) override |
Get the row interpolation functions. | |
Protected Member Functions inherited from vtkAbstractImageInterpolator | |
virtual vtkObjectBase * | NewInstanceInternal () const |
vtkAbstractImageInterpolator () | |
~vtkAbstractImageInterpolator () override | |
virtual void | InternalUpdate ()=0 |
Subclass-specific updates. | |
virtual void | InternalDeepCopy (vtkAbstractImageInterpolator *obj)=0 |
Subclass-specific copy. | |
virtual void | GetSlidingWindowFunc (void(**doublefunc)(vtkInterpolationWeights *, int, int, int, double *, int)) |
Get the sliding window interpolation functions. | |
virtual void | GetSlidingWindowFunc (void(**floatfunc)(vtkInterpolationWeights *, int, int, int, float *, int)) |
Get the sliding window interpolation functions. | |
Protected Member Functions inherited from vtkObject | |
vtkObject () | |
~vtkObject () override | |
void | RegisterInternal (vtkObjectBase *, vtkTypeBool check) override |
void | UnRegisterInternal (vtkObjectBase *, vtkTypeBool check) override |
void | InternalGrabFocus (vtkCommand *mouseEvents, vtkCommand *keypressEvents=nullptr) |
These methods allow a command to exclusively grab all events. | |
void | InternalReleaseFocus () |
These methods allow a command to exclusively grab all events. | |
Protected Member Functions inherited from vtkObjectBase | |
vtkObjectBase () | |
virtual | ~vtkObjectBase () |
virtual void | RegisterInternal (vtkObjectBase *, vtkTypeBool check) |
virtual void | UnRegisterInternal (vtkObjectBase *, vtkTypeBool check) |
virtual void | ReportReferences (vtkGarbageCollector *) |
vtkObjectBase (const vtkObjectBase &) | |
void | operator= (const vtkObjectBase &) |
Additional Inherited Members | |
Static Protected Member Functions inherited from vtkObjectBase | |
static vtkMallocingFunction | GetCurrentMallocFunction () |
static vtkReallocingFunction | GetCurrentReallocFunction () |
static vtkFreeingFunction | GetCurrentFreeFunction () |
static vtkFreeingFunction | GetAlternateFreeFunction () |
perform sinc interpolation on images
vtkImageSincInterpolator provides various windowed sinc interpolation methods for image data. The default is a five-lobed Lanczos interpolant, with a kernel size of 6. The interpolator can also bandlimit the image, which can be used for antialiasing. The interpolation kernels are evaluated via a lookup table for efficiency.
Definition at line 82 of file vtkImageSincInterpolator.h.
Definition at line 86 of file vtkImageSincInterpolator.h.
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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 vtkTypeMacro found in vtkSetGet.h.
Reimplemented from vtkAbstractImageInterpolator.
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Reimplemented from vtkAbstractImageInterpolator.
vtkImageSincInterpolator * vtkImageSincInterpolator::NewInstance | ( | ) | const |
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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 vtkAbstractImageInterpolator.
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The window function to use.
The default is Lanczos, which is very popular and performs well with a kernel width of 6. The Cosine window is included for historical reasons. All other windows are described in AH Nuttall, "Some windows with very good sidelobe behavior," IEEE Transactions on Acoustics, Speech, and Signal Processing 29:84-91, 1981.
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The window function to use.
The default is Lanczos, which is very popular and performs well with a kernel width of 6. The Cosine window is included for historical reasons. All other windows are described in AH Nuttall, "Some windows with very good sidelobe behavior," IEEE Transactions on Acoustics, Speech, and Signal Processing 29:84-91, 1981.
Definition at line 99 of file vtkImageSincInterpolator.h.
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The window function to use.
The default is Lanczos, which is very popular and performs well with a kernel width of 6. The Cosine window is included for historical reasons. All other windows are described in AH Nuttall, "Some windows with very good sidelobe behavior," IEEE Transactions on Acoustics, Speech, and Signal Processing 29:84-91, 1981.
Definition at line 100 of file vtkImageSincInterpolator.h.
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The window function to use.
The default is Lanczos, which is very popular and performs well with a kernel width of 6. The Cosine window is included for historical reasons. All other windows are described in AH Nuttall, "Some windows with very good sidelobe behavior," IEEE Transactions on Acoustics, Speech, and Signal Processing 29:84-91, 1981.
Definition at line 101 of file vtkImageSincInterpolator.h.
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The window function to use.
The default is Lanczos, which is very popular and performs well with a kernel width of 6. The Cosine window is included for historical reasons. All other windows are described in AH Nuttall, "Some windows with very good sidelobe behavior," IEEE Transactions on Acoustics, Speech, and Signal Processing 29:84-91, 1981.
Definition at line 102 of file vtkImageSincInterpolator.h.
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The window function to use.
The default is Lanczos, which is very popular and performs well with a kernel width of 6. The Cosine window is included for historical reasons. All other windows are described in AH Nuttall, "Some windows with very good sidelobe behavior," IEEE Transactions on Acoustics, Speech, and Signal Processing 29:84-91, 1981.
Definition at line 103 of file vtkImageSincInterpolator.h.
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The window function to use.
The default is Lanczos, which is very popular and performs well with a kernel width of 6. The Cosine window is included for historical reasons. All other windows are described in AH Nuttall, "Some windows with very good sidelobe behavior," IEEE Transactions on Acoustics, Speech, and Signal Processing 29:84-91, 1981.
Definition at line 104 of file vtkImageSincInterpolator.h.
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The window function to use.
The default is Lanczos, which is very popular and performs well with a kernel width of 6. The Cosine window is included for historical reasons. All other windows are described in AH Nuttall, "Some windows with very good sidelobe behavior," IEEE Transactions on Acoustics, Speech, and Signal Processing 29:84-91, 1981.
Definition at line 105 of file vtkImageSincInterpolator.h.
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The window function to use.
The default is Lanczos, which is very popular and performs well with a kernel width of 6. The Cosine window is included for historical reasons. All other windows are described in AH Nuttall, "Some windows with very good sidelobe behavior," IEEE Transactions on Acoustics, Speech, and Signal Processing 29:84-91, 1981.
Definition at line 106 of file vtkImageSincInterpolator.h.
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The window function to use.
The default is Lanczos, which is very popular and performs well with a kernel width of 6. The Cosine window is included for historical reasons. All other windows are described in AH Nuttall, "Some windows with very good sidelobe behavior," IEEE Transactions on Acoustics, Speech, and Signal Processing 29:84-91, 1981.
Definition at line 107 of file vtkImageSincInterpolator.h.
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The window function to use.
The default is Lanczos, which is very popular and performs well with a kernel width of 6. The Cosine window is included for historical reasons. All other windows are described in AH Nuttall, "Some windows with very good sidelobe behavior," IEEE Transactions on Acoustics, Speech, and Signal Processing 29:84-91, 1981.
Definition at line 108 of file vtkImageSincInterpolator.h.
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The window function to use.
The default is Lanczos, which is very popular and performs well with a kernel width of 6. The Cosine window is included for historical reasons. All other windows are described in AH Nuttall, "Some windows with very good sidelobe behavior," IEEE Transactions on Acoustics, Speech, and Signal Processing 29:84-91, 1981.
Definition at line 109 of file vtkImageSincInterpolator.h.
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The window function to use.
The default is Lanczos, which is very popular and performs well with a kernel width of 6. The Cosine window is included for historical reasons. All other windows are described in AH Nuttall, "Some windows with very good sidelobe behavior," IEEE Transactions on Acoustics, Speech, and Signal Processing 29:84-91, 1981.
Definition at line 110 of file vtkImageSincInterpolator.h.
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The window function to use.
The default is Lanczos, which is very popular and performs well with a kernel width of 6. The Cosine window is included for historical reasons. All other windows are described in AH Nuttall, "Some windows with very good sidelobe behavior," IEEE Transactions on Acoustics, Speech, and Signal Processing 29:84-91, 1981.
void vtkImageSincInterpolator::SetWindowHalfWidth | ( | int | n | ) |
Set the window half-width, this must be an integer between 1 and 16, with a default value of 3.
The kernel size will be twice this value if no blur factors are applied. The total number of sinc lobes will be one less than twice the half-width, so if the half-width is 3 then the kernel size will be 6 and there will be 5 sinc lobes.
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Definition at line 122 of file vtkImageSincInterpolator.h.
void vtkImageSincInterpolator::SetUseWindowParameter | ( | int | val | ) |
Turn this on in order to use SetWindowParameter.
If it is off, then the default parameter will be used for the window.
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Definition at line 129 of file vtkImageSincInterpolator.h.
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Definition at line 130 of file vtkImageSincInterpolator.h.
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Definition at line 131 of file vtkImageSincInterpolator.h.
void vtkImageSincInterpolator::SetWindowParameter | ( | double | parm | ) |
Set the alpha parameter for the Kaiser window function.
This parameter will be ignored unless UseWindowParameter is On. If UseWindowParameter is Off, then alpha is set to be the same as n where n is the window half-width. Using an alpha less than n increases the sharpness and ringing, while using an alpha greater than n increases the blurring.
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Definition at line 142 of file vtkImageSincInterpolator.h.
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Get the support size for use in computing update extents.
If the data will be sampled on a regular grid, then pass a matrix describing the structured coordinate transformation between the output and the input. Otherwise, pass nullptr as the matrix to retrieve the full kernel size.
Implements vtkAbstractImageInterpolator.
void vtkImageSincInterpolator::SetBlurFactors | ( | double | x, |
double | y, | ||
double | z | ||
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Blur the image by widening the windowed sinc kernel by the specified factors for the x, y, and z directions.
This reduces the bandwidth by these same factors. If you turn Antialiasing on, then the blur factors will be computed automatically from the output sampling rate. Blurring increases the computation time because the kernel size increases by the blur factor.
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Blur the image by widening the windowed sinc kernel by the specified factors for the x, y, and z directions.
This reduces the bandwidth by these same factors. If you turn Antialiasing on, then the blur factors will be computed automatically from the output sampling rate. Blurring increases the computation time because the kernel size increases by the blur factor.
Definition at line 162 of file vtkImageSincInterpolator.h.
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Blur the image by widening the windowed sinc kernel by the specified factors for the x, y, and z directions.
This reduces the bandwidth by these same factors. If you turn Antialiasing on, then the blur factors will be computed automatically from the output sampling rate. Blurring increases the computation time because the kernel size increases by the blur factor.
Definition at line 163 of file vtkImageSincInterpolator.h.
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Blur the image by widening the windowed sinc kernel by the specified factors for the x, y, and z directions.
This reduces the bandwidth by these same factors. If you turn Antialiasing on, then the blur factors will be computed automatically from the output sampling rate. Blurring increases the computation time because the kernel size increases by the blur factor.
Definition at line 169 of file vtkImageSincInterpolator.h.
void vtkImageSincInterpolator::SetAntialiasing | ( | int | antialiasing | ) |
Turn on antialiasing.
If antialiasing is on, then the BlurFactors will be computed automatically from the output sampling rate such that that the image will be bandlimited to the Nyquist frequency. This is only applicable when the interpolator is being used by a resampling filter like vtkImageReslice. Such a filter will indicate the output sampling by calling the interpolator's ComputeSupportSize() method, which will compute the blur factors at the same time that it computes the support size.
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Definition at line 183 of file vtkImageSincInterpolator.h.
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Definition at line 184 of file vtkImageSincInterpolator.h.
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Definition at line 185 of file vtkImageSincInterpolator.h.
void vtkImageSincInterpolator::SetRenormalization | ( | int | renormalization | ) |
Turn off renormalization.
Most of the sinc windows provide kernels for which the weights do not sum to one, and for which the sum depends on the offset. This results in small ripple artifacts in the output. By default, the vtkImageSincInterpolator will renormalize these kernels. This method allows the renormalization to be turned off.
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Definition at line 195 of file vtkImageSincInterpolator.h.
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Definition at line 196 of file vtkImageSincInterpolator.h.
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Definition at line 197 of file vtkImageSincInterpolator.h.
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Returns true if the interpolator supports weight precomputation.
This will always return true for this interpolator.
Implements vtkAbstractImageInterpolator.
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If the data is going to be sampled on a regular grid, then the interpolation weights can be precomputed.
A matrix must be supplied that provides a transformation between the provided extent and the structured coordinates of the input. This matrix must perform only permutations, scales, and translation, i.e. each of the three columns must have only one non-zero value. A new extent is provided for out-of-bounds checks. THIS METHOD IS THREAD SAFE.
Reimplemented from vtkAbstractImageInterpolator.
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If the data is going to be sampled on a regular grid, then the interpolation weights can be precomputed.
A matrix must be supplied that provides a transformation between the provided extent and the structured coordinates of the input. This matrix must perform only permutations, scales, and translation, i.e. each of the three columns must have only one non-zero value. A new extent is provided for out-of-bounds checks. THIS METHOD IS THREAD SAFE.
Reimplemented from vtkAbstractImageInterpolator.
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Free the precomputed weights.
THIS METHOD IS THREAD SAFE.
Reimplemented from vtkAbstractImageInterpolator.
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Update the interpolator.
Implements vtkAbstractImageInterpolator.
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Copy the interpolator.
Implements vtkAbstractImageInterpolator.
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Get the interpolation functions.
Reimplemented from vtkAbstractImageInterpolator.
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Get the interpolation functions.
Reimplemented from vtkAbstractImageInterpolator.
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Get the row interpolation functions.
Reimplemented from vtkAbstractImageInterpolator.
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Get the row interpolation functions.
Reimplemented from vtkAbstractImageInterpolator.
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Build the lookup tables used for the interpolation.
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Free the kernel lookup tables.
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Definition at line 271 of file vtkImageSincInterpolator.h.
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Definition at line 272 of file vtkImageSincInterpolator.h.
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Definition at line 273 of file vtkImageSincInterpolator.h.
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Definition at line 274 of file vtkImageSincInterpolator.h.
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Definition at line 275 of file vtkImageSincInterpolator.h.
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Definition at line 276 of file vtkImageSincInterpolator.h.
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Definition at line 277 of file vtkImageSincInterpolator.h.
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Definition at line 278 of file vtkImageSincInterpolator.h.
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Definition at line 279 of file vtkImageSincInterpolator.h.
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Definition at line 280 of file vtkImageSincInterpolator.h.