#include <ossimResampler.h>

Inheritance diagram for ossimResampler:

Public Types
enum	ossimResLevelResamplerType { ossimResampler_NONE = 0, ossimResampler_NEAREST_NEIGHBOR = 1, ossimResampler_BILINEAR = 2, ossimResampler_BICUBIC = 3 }

Public Types inherited from ossimConnectableObject
enum	ossimConnectableObjectDirectionType { CONNECTABLE_DIRECTION_NONE = 0, CONNECTABLE_DIRECTION_INPUT = 1, CONNECTABLE_DIRECTION_OUTPUT = 2 }

typedef std::vector< ossimRefPtr< ossimConnectableObject > >	ConnectableObjectList

Public Member Functions
	ossimResampler ()

virtual void	resample (ossimImageData input, ossimImageData output)

virtual void	resample (ossimImageData input, ossimImageData output, const ossimDpt &ul, const ossimDpt &ur, const ossimDpt &deltaUl, const ossimDpt &deltaUr, const ossimDpt &length)

virtual void	resample (ossimImageData input, ossimImageData output, const ossimIrect &outputSubRect, const ossimDpt &ul, const ossimDpt &ur, const ossimDpt &deltaUl, const ossimDpt &deltaUr, const ossimDpt &length)

virtual void	resampleNearestNeighbor (ossimImageData input, ossimImageData output, const ossimIrect &outputSubRect, const ossimDpt &ul, const ossimDpt &ur, const ossimDpt &deltaUl, const ossimDpt &deltaUr, const ossimDpt &length)

virtual void	resampleNearestNeighbor (ossimImageData input, ossimImageData output, const ossimDpt &ul, const ossimDpt &ur, const ossimDpt &deltaUl, const ossimDpt &deltaUr, const ossimDpt &length)

virtual void	setResamplerType (ossimResLevelResamplerType type)

virtual ossimResLevelResamplerType	getResamplerType () const

virtual double	getCubicParameter () const

virtual void	setCubicParameter (double parameter)

void	setRatio (double outputToInputRatio)

void	setRatio (const ossimDpt &outputToInputRatio)

ossimDpt	getRatio () const

virtual ossim_int32	getKernelWidth () const

virtual ossim_int32	getKernelHeight () const

virtual bool	saveState (ossimKeywordlist &kwl, const char *prefix=0) const

virtual bool	loadState (const ossimKeywordlist &kwl, const char *prefix=0)

bool	canConnectMyInputTo (ossim_int32, const ossimConnectableObject *) const
	required to be overriden by derived classes More...

Public Member Functions inherited from ossimConnectableObject
	ossimConnectableObject (ossimObject *owner=0)
	Base constructor of this object. More...

	ossimConnectableObject (ossimObject *owner, ossim_int32 inputListSize, ossim_int32 outputListSize, bool inputListIsFixedFlag=true, bool outputListIsFixedFlag=true)

virtual	~ossimConnectableObject ()

void	setId (const ossimId &id)
	All connectable objects will have id's. More...

const ossimId &	getId () const
	Will allow us to get this object's id. More...

const ossimObject *	getOwner () const
	Fetches the current owner, most likely a container but not limited to one. More...

virtual void	changeOwner (ossimObject *owner)
	Permits changing the object's owner. More...

virtual void	setDescription (const ossimString &description)

virtual ossimString	getDescription () const

virtual bool	isConnected (ossimConnectableObjectDirectionType direction=CONNECTABLE_DIRECTION_INPUT) const
	will check the direction specified to see if all slots are full. More...

	OSSIM_DEPRECATE_METHOD (virtual ossimConnectableObject *findConnectableObject(const ossimId &id))

	OSSIM_DEPRECATE_METHOD (virtual ossimConnectableObject *findObjectOfType(RTTItypeid typeId, ossimConnectableObjectDirectionType directionType, bool recurse=true))

	OSSIM_DEPRECATE_METHOD (virtual ossimConnectableObject *findObjectOfType(const ossimString &obj, ossimConnectableObjectDirectionType directionType, bool recurse=true))

	OSSIM_DEPRECATE_METHOD (virtual ossimConnectableObject *findInputObjectOfType(const ossimString &className))

virtual ossim_int32	findInputIndex (const ossimConnectableObject *object)
	Return a valid index of the input list if the passed in object is found else return -1. More...

virtual ossim_int32	findInputIndex (const ossimId &id)
	Return a valid index of the input list if the passed id is found else return -1. More...

virtual ossim_int32	findOutputIndex (const ossimConnectableObject *object)
	Return a valid index of the output list if the passed in object is found else return -1. More...

virtual ossim_int32	findOutputIndex (const ossimId &id)
	Return a valid index of the output list if the passed in object is found else return -1. More...

virtual ossim_int32	getMyInputIndexToConnectTo (ossimConnectableObject *object) const
	Should return the first available index to connect to. More...

virtual ossim_int32	getMyOutputIndexToConnectTo (ossimConnectableObject *object) const
	Should return the first available index to connect to. More...

virtual bool	canConnectMyOutputTo (ossim_int32 myOutputIndex, const ossimConnectableObject *object) const
	default implementation is to allow anyone to connect to us. More...

virtual void	disconnect (ossimConnectableObject *object=0)
	Will disconnect the object passed in. More...

virtual void	disconnect (const ossimId &id)
	Will disconnect the object passed in. More...

virtual ossimRefPtr< ossimConnectableObject >	disconnectMyInput (ossim_int32 inputIndex, bool disconnectOutputFlag=true, bool createEventFlag=true)
	Will disconnect the object at the given input index and generate a connection event. More...

virtual void	disconnectMyInput (ossimConnectableObject *input, bool disconnectOutputFlag=true, bool createEventFlag=true)
	Finds the index of the passed in input and calls disconnectMyInput(inputIndex, disconnectOutputFlag, createEventFlag);. More...

virtual void	disconnectMyInputs (ConnectableObjectList &inputList, bool disconnectOutputFlag=true, bool createEventFlag=true)

virtual ossimRefPtr< ossimConnectableObject >	disconnectMyOutput (ossim_int32 outputIndex, bool disconnectInputFlag=true, bool createEventFlag=true)
	Will disconnect the object at the given output index and generate a connection event. More...

virtual void	disconnectMyOutput (ossimConnectableObject *output, bool disconnectInputFlag=true, bool createEventFlag=true)
	Will disconnect the output object. More...

virtual void	disconnectMyOutputs (ConnectableObjectList &outputList, bool disconnectOutputFlag=true, bool createEventFlag=true)

virtual void	disconnectAllInputs ()
	Will disconnect all of the input objects. More...

virtual void	disconnectAllOutputs ()
	Will disconnect all of the output objects. More...

virtual ossim_int32	connectMyInputTo (ossimConnectableObject *inputObject, bool makeOutputConnection=true, bool createEventFlag=true)
	Will try to connect this objects input to the passed in object. More...

virtual ossim_int32	connectMyInputTo (ossim_int32 inputIndex, ossimConnectableObject *inputObject, bool makeOutputConnection=true, bool createEventFlag=true)
	Will connect the specified input to the passed in object. More...

virtual bool	connectMyInputTo (ConnectableObjectList &inputList, bool makeOutputConnection=true, bool createEventFlag=true)

virtual ossim_int32	connectMyOutputTo (ossimConnectableObject *outputObject, bool makeInputConnection=true, bool createEventFlag=true)
	Will try to connect this objects output to the passed in object. More...

virtual bool	connectMyOutputTo (ConnectableObjectList &outputList, bool makeInputConnection=true, bool createEventFlag=true)

virtual bool	connectInputList (ConnectableObjectList &inputList)
	Will disconnect itself from all inputs and reset to the passed in input list. More...

virtual bool	connectOutputList (ConnectableObjectList &outputList)
	Will disconnect itself from all outputs and reset to the passed in output list. More...

virtual ossim_uint32	getNumberOfInputs () const
	Returns the number of input objects. More...

virtual ossim_uint32	getNumberOfOutputs () const
	Return the number of output objects. More...

ossimConnectableObject *	getInput (ossim_uint32 index=0)
	returns the object at the specified index. More...

const ossimConnectableObject *	getInput (ossim_uint32 index=0) const
	returns the object at the specified index. More...

ossimConnectableObject *	getOutput (ossim_uint32 index=0)
	returns the object at the specified index. More...

const ossimConnectableObject *	getOutput (ossim_uint32 index=0) const
	returns the object at the specified index. More...

virtual void	setNumberOfInputs (ossim_int32 numberOfInputs)
	Will set the number of inputs. More...

virtual bool	getInputListIsFixedFlag () const

virtual bool	getOutputListIsFixedFlag () const

virtual void	setNumberOfOutputs (ossim_int32 numberOfInputs)
	Will set the number of outputs. More...

const ConnectableObjectList &	getInputList () const

const ConnectableObjectList &	getOutputList () const

ConnectableObjectList &	getInputList ()

ConnectableObjectList &	getOutputList ()

	OSSIM_DEPRECATE_METHOD (virtual void findAllObjectsOfType(ConnectableObjectList &result, const RTTItypeid &typeInfo, bool recurse=true))

	OSSIM_DEPRECATE_METHOD (virtual void findAllObjectsOfType(ConnectableObjectList &result, const ossimString &className, bool recurse=true))

virtual void	propagateEventToOutputs (ossimEvent &event)

virtual void	propagateEventToInputs (ossimEvent &event)

virtual void	setProperty (ossimRefPtr< ossimProperty > property)

virtual void	setProperty (const ossimString &name, const ossimString &value)

virtual ossimRefPtr< ossimProperty >	getProperty (const ossimString &name) const

virtual void	getPropertyNames (std::vector< ossimString > &propertyNames) const

virtual ossim_uint32	saveStateOfAllInputs (ossimKeywordlist &kwl, bool saveThisStateFlag=true, ossim_uint32 objectIndex=1, const char *prefix=0) const
	Save the state of all inputs to a keyword list. More...

virtual bool	fillContainer (ossimConnectableContainer &container)
	Inserts this object and all of its children and inputs into the container provided. More...

bool	moveInputUp (const ossimId &id)
	Moves the input connection matching id up one in the connection list. More...

bool	moveInputDown (const ossimId &id)
	Moves the input connection matching id down one in the connection list. More...

bool	moveInputToTop (const ossimId &id)
	Moves the input connection matching id to the top of the connection list. More...

bool	moveInputToBottom (const ossimId &id)
	Moves the input connection matching id to the bottom of the connection list. More...

virtual void	accept (ossimVisitor &visitor)
	We will add a visitor interface for all connectable objects. More...

Public Member Functions inherited from ossimObject
	ossimObject ()

virtual	~ossimObject ()

virtual ossimObject *	dup () const

virtual ossimString	getShortName () const

virtual ossimString	getLongName () const

virtual ossimString	getClassName () const

virtual RTTItypeid	getType () const

virtual bool	canCastTo (ossimObject *obj) const

virtual bool	canCastTo (const RTTItypeid &id) const

virtual bool	canCastTo (const ossimString &parentClassName) const

virtual std::ostream &	print (std::ostream &out) const
	Generic print method. More...

virtual bool	isEqualTo (const ossimObject &obj, ossimCompareType compareType=OSSIM_COMPARE_FULL) const

Public Member Functions inherited from ossimReferenced
	ossimReferenced ()

	ossimReferenced (const ossimReferenced &)

ossimReferenced &	operator= (const ossimReferenced &)

void	ref () const
	increment the reference count by one, indicating that this object has another pointer which is referencing it. More...

void	unref () const
	decrement the reference count by one, indicating that a pointer to this object is referencing it. More...

void	unref_nodelete () const
	decrement the reference count by one, indicating that a pointer to this object is referencing it. More...

int	referenceCount () const

Public Member Functions inherited from ossimListenerManager
	ossimListenerManager ()

virtual	~ossimListenerManager ()

virtual void	fireEvent (ossimEvent &event)

virtual bool	addListener (ossimListener *listener)

virtual bool	removeListener (ossimListener *listener)

virtual bool	findListener (ossimListener *listener)

Public Member Functions inherited from ossimPropertyInterface
	ossimPropertyInterface ()

virtual	~ossimPropertyInterface ()

virtual ossimString	getPropertyValueAsString (const ossimString &name) const

void	getPropertyList (std::vector< ossimRefPtr< ossimProperty > > &propertyList) const

void	setProperties (std::vector< ossimRefPtr< ossimProperty > > &propertyList)

Protected Member Functions
virtual	~ossimResampler ()

template<class T >
void	resampleTile (T, ossimImageData input, ossimImageData output)

template<class T >
void	resampleFullTile (T, ossimImageData input, ossimImageData output)

template<class T >
void	resamplePartialTile (T, ossimImageData input, ossimImageData output)

template<class T >
void	resampleTile (T, ossimImageData input, ossimImageData output, const ossimIrect &outputSubRect, const ossimDpt &ul, const ossimDpt &ur, const ossimDpt &deltaUl, const ossimDpt &deltaUr, const ossimDpt &length)

template<class T >
void	resampleTileNearestNeighbor (T, ossimImageData input, ossimImageData output, const ossimDpt &ul, const ossimDpt &ur, const ossimDpt &deltaUl, const ossimDpt &deltaUr, const ossimDpt &length)

template<class T >
void	resampleTileNearestNeighbor (T, ossimImageData input, ossimImageData output, const ossimIrect &subRect, const ossimDpt &ul, const ossimDpt &ur, const ossimDpt &deltaUl, const ossimDpt &deltaUr, const ossimDpt &length)

virtual void	deleteWeightTable ()

virtual void	allocateWeightTable ()

virtual void	generateWeightTable ()

double	getCubicC0 (double t) const

double	getCubicC1 (double t) const

double	getCubicC2 (double t) const

double	getCubicC3 (double t) const

Protected Member Functions inherited from ossimConnectableObject
ossimConnectableObject *	findObjectOfType (ConnectableObjectList *connectableList, ossimVisitor &visitor)

Protected Member Functions inherited from ossimReferenced
virtual	~ossimReferenced ()

Protected Member Functions inherited from ossimListenerManager
	ossimListenerManager (const ossimListenerManager &rhs)

Protected Attributes
ossimDpt	theOutputToInputRatio

ossimResLevelResamplerType	theResamplerType

ossim_int32	theTableWidthX

ossim_int32	theTableWidthY

ossim_int32	theTableHeight

ossim_int32	theKernelWidth

ossim_int32	theKernelHeight

double **	theWeightTableX

double **	theWeightTableY

double	theCubicAdjustableParameter

Protected Attributes inherited from ossimConnectableObject
ossimId	theId

ossimString	theDescription

ossimObject *	theOwner

bool	theInputListIsFixedFlag
	Indicates whether the theInputObjectList is fixed. More...

bool	theOutputListIsFixedFlag
	Indicates whether the theOutputObjectList is fixed. More...

ConnectableObjectList	theInputObjectList
	Holds a list of input objects. More...

ConnectableObjectList	theOutputObjectList
	Holds a list of output objects. More...

Protected Attributes inherited from ossimListenerManager
std::list< ossimListener * >	theListenerList

bool	theEnabledFlag

std::list< ossimListener * >	theDelayedAdd

std::list< ossimListener * >	theDelayedRemove

bool	theFireEventFlag

Detailed Description

This is currently implemented as a symmetric kernel resampler. It will use a lookup table idea to precompute

The resampler will support Nearest neighbor, Bilinear and Bicubic

The lookup table approach will be borrowed from Michael J. Aramini implementation of the Bicubic convolution:

  http://www.ultranet.com/~aramini/
  under:
   Efficient Image Magnification by Bicubic Spline Interpolation.

Definition at line 32 of file ossimResampler.h.

Member Enumeration Documentation

◆ ossimResLevelResamplerType

enum ossimResampler::ossimResLevelResamplerType

Enumerator
ossimResampler_NONE
ossimResampler_NEAREST_NEIGHBOR
ossimResampler_BILINEAR
ossimResampler_BICUBIC

Definition at line 35 of file ossimResampler.h.

    {
       ossimResampler_NONE             = 0,
       ossimResampler_NEAREST_NEIGHBOR = 1,
       ossimResampler_BILINEAR         = 2,
       ossimResampler_BICUBIC          = 3
    };

Constructor & Destructor Documentation

◆ ossimResampler()

ossimResampler::ossimResampler ( )

Definition at line 38 of file ossimResampler.cpp.

    :ossimConnectableObject(NULL,0,0,true, false),
     theOutputToInputRatio(1,1),
     theResamplerType(ossimResampler_NONE),
     theTableWidthX(0),
     theTableWidthY(0),
     theTableHeight(0),
     theKernelWidth(0),
     theKernelHeight(0),
     theWeightTableX(NULL),
     theWeightTableY(NULL),
     theCubicAdjustableParameter(-.5)
 {
 }

◆ ~ossimResampler()

ossimResampler::~ossimResampler ( )

protectedvirtual

Definition at line 53 of file ossimResampler.cpp.

References deleteWeightTable().

 {
    deleteWeightTable();
 }

Member Function Documentation

◆ allocateWeightTable()

void ossimResampler::allocateWeightTable ( )

protectedvirtual

Definition at line 958 of file ossimResampler.cpp.

References deleteWeightTable(), ossimResampler_BICUBIC, ossimResampler_BILINEAR, ossimResampler_NEAREST_NEIGHBOR, ossimResampler_NONE, theOutputToInputRatio, theResamplerType, theTableHeight, theTableWidthX, theTableWidthY, theWeightTableX, theWeightTableY, ossimDpt::x, and ossimDpt::y.

Referenced by setRatio(), and setResamplerType().

 {
    if(theWeightTableX||
       theWeightTableY)
    {
       deleteWeightTable();
    }
    
    switch(theResamplerType)
    {
    case ossimResampler_BICUBIC:
    {
       theTableHeight = 4;
       break;
    }
    case ossimResampler_BILINEAR:
    {
       theTableHeight = 2;
       break;
    }
    case ossimResampler_NEAREST_NEIGHBOR:
    {
       theTableHeight = 1;
       break;
    }
    case ossimResampler_NONE:
      {
        theResamplerType = ossimResampler_NEAREST_NEIGHBOR;
       theTableHeight = 1;
       break;
      }
    }
    theTableWidthX = (ossim_int32)ossim::round<int>(theOutputToInputRatio.x);
    theTableWidthY = (ossim_int32)ossim::round<int>(theOutputToInputRatio.y);
    if(theTableWidthX&&theTableHeight)
    {
       theWeightTableX = new double*[theTableHeight];
       
       for(ossim_int32 index = 0; index < theTableHeight; ++index)
       {
          theWeightTableX[index] = new double[theTableWidthX];
       }
    }
    if(theTableWidthY&&theTableHeight)
    {
       theWeightTableY = new double*[theTableHeight];
       
       for(ossim_int32 index = 0; index < theTableHeight; ++index)
       {
          theWeightTableY[index] = new double[theTableWidthY];
       }
    }
 }

◆ canConnectMyInputTo()

bool ossimResampler::canConnectMyInputTo	(	ossim_int32	myInputIndex,
		const ossimConnectableObject *	object
	)		const

inlinevirtual

required to be overriden by derived classes

Implements ossimConnectableObject.

Definition at line 138 of file ossimResampler.h.

    {
       return false;
    }

◆ deleteWeightTable()

void ossimResampler::deleteWeightTable ( )

protectedvirtual

Definition at line 934 of file ossimResampler.cpp.

References theTableHeight, theWeightTableX, and theWeightTableY.

Referenced by allocateWeightTable(), and ~ossimResampler().

 {
    if(theWeightTableX)
    {
       for(ossim_int32 index = 0; index < theTableHeight; ++index)
       {
          delete [] theWeightTableX[index];
       }
       delete [] theWeightTableX;
 
       theWeightTableX = NULL;
    }
    if(theWeightTableY)
    {
       for(ossim_int32 index = 0; index < theTableHeight; ++index)
       {
          delete [] theWeightTableY[index];
       }
       delete [] theWeightTableY;
 
       theWeightTableY = NULL;
    }
 }

◆ generateWeightTable()

void ossimResampler::generateWeightTable ( )

protectedvirtual

Definition at line 1012 of file ossimResampler.cpp.

References getCubicC0(), getCubicC1(), getCubicC2(), getCubicC3(), ossimResampler_BICUBIC, ossimResampler_BILINEAR, ossimResampler_NEAREST_NEIGHBOR, ossimResampler_NONE, theResamplerType, theTableWidthX, theTableWidthY, theWeightTableX, theWeightTableY, and x.

Referenced by setCubicParameter(), setRatio(), and setResamplerType().

 {
    if(theWeightTableX&&
       theWeightTableY)
    {
 //      ossim_int32 d = theOutputToInputRatio.theDen;
 //      ossim_int32 n = theOutputToInputRatio.theNum;
       ossim_int32 i = 0;
       
       double x = 0.0;
       
       switch(theResamplerType)
       {
    case ossimResampler_NONE:
      {
        theResamplerType = ossimResampler_NEAREST_NEIGHBOR;
        for (i = 0; i < theTableWidthY; ++i)
          {
        theWeightTableY[0][i] = 1;
          }
        for (i = 0; i < theTableWidthX; ++i)
          {
        theWeightTableX[0][i] = 1;
          }
       break;
      }
       case ossimResampler_NEAREST_NEIGHBOR:
       {         
          for (i = 0; i < theTableWidthY; ++i)
          {
             theWeightTableY[0][i] = 1;
          }
          for (i = 0; i < theTableWidthX; ++i)
          {
             theWeightTableX[0][i] = 1;
          }
          break;
       }
       case ossimResampler_BILINEAR:
       {
          for (i = 0; i < theTableWidthX; ++i)
          {
             x = (double)i/(double)(theTableWidthX);
             theWeightTableX[0][i] = x;
             theWeightTableX[1][i] = 1-x;
          }
          for (i = 0; i < theTableWidthY; ++i)
          {
             x = (double)i/(double)(theTableWidthY);
             theWeightTableY[0][i] = x;
             theWeightTableY[1][i] = 1-x;
          }
          break;
       }
       case ossimResampler_BICUBIC:
       {         
          for (i = 0; i < theTableWidthX; ++i)
          {
             x = (double)i/(double)(theTableWidthX);
             theWeightTableX[0][i] = getCubicC0(x);
             theWeightTableX[1][i] = getCubicC1(x);
             theWeightTableX[2][i] = getCubicC2(x);
             theWeightTableX[3][i] = getCubicC3(x);               
          }
          for (i = 0; i < theTableWidthY; ++i)
          {
             x = (double)i/(double)(theTableWidthY);
             theWeightTableY[0][i] = getCubicC0(x);
             theWeightTableY[1][i] = getCubicC1(x);
             theWeightTableY[2][i] = getCubicC2(x);
             theWeightTableY[3][i] = getCubicC3(x);               
          }
          break;
       }
       }
    }
 }

◆ getCubicC0()

double ossimResampler::getCubicC0 ( double t ) const

protected

Definition at line 1154 of file ossimResampler.cpp.

References theCubicAdjustableParameter.

Referenced by generateWeightTable().

 {
    return ((-theCubicAdjustableParameter * t * t * t) +
            (theCubicAdjustableParameter * t * t));
 }

◆ getCubicC1()

double ossimResampler::getCubicC1 ( double t ) const

protected

Definition at line 1160 of file ossimResampler.cpp.

References theCubicAdjustableParameter.

Referenced by generateWeightTable().

 {
    return (-(theCubicAdjustableParameter + 2.0) * t * t * t +
            (2.0 * theCubicAdjustableParameter + 3.0) * t * t -
            theCubicAdjustableParameter * t);
 }

◆ getCubicC2()

double ossimResampler::getCubicC2 ( double t ) const

protected

Definition at line 1167 of file ossimResampler.cpp.

References theCubicAdjustableParameter.

Referenced by generateWeightTable().

 {
    return ((theCubicAdjustableParameter + 2.0) * t * t * t -
            (theCubicAdjustableParameter + 3.0) * t * t + 1.0);
 }

◆ getCubicC3()

double ossimResampler::getCubicC3 ( double t ) const

protected

Definition at line 1173 of file ossimResampler.cpp.

References theCubicAdjustableParameter.

Referenced by generateWeightTable().

 {
    return ((theCubicAdjustableParameter * t * t * t) -
            (2.0f * theCubicAdjustableParameter * t * t) +
            (theCubicAdjustableParameter * t));
 }

◆ getCubicParameter()

virtual double ossimResampler::getCubicParameter ( ) const

inlinevirtual

Definition at line 98 of file ossimResampler.h.

References theCubicAdjustableParameter.

       {
          return theCubicAdjustableParameter;
       }

◆ getKernelHeight()

ossim_int32 ossimResampler::getKernelHeight ( ) const

virtual

Definition at line 929 of file ossimResampler.cpp.

References theKernelHeight.

 {
    return theKernelHeight;
 }

◆ getKernelWidth()

ossim_int32 ossimResampler::getKernelWidth ( ) const

virtual

Definition at line 924 of file ossimResampler.cpp.

References theKernelWidth.

 {
    return theKernelWidth;
 }

◆ getRatio()

ossimDpt ossimResampler::getRatio ( ) const

inline

Definition at line 117 of file ossimResampler.h.

References theOutputToInputRatio.

       {
          return theOutputToInputRatio;
       }

◆ getResamplerType()

virtual ossimResLevelResamplerType ossimResampler::getResamplerType ( ) const

inlinevirtual

Definition at line 93 of file ossimResampler.h.

References theResamplerType.

Referenced by saveState().

       {
          return theResamplerType;
       }

◆ loadState()

bool ossimResampler::loadState	(	const ossimKeywordlist &	kwl,
		const char *	prefix = `0`
	)

virtual

Method to the load (recreate) the state of an object from a keyword list. Return true if ok or false on error.

Reimplemented from ossimConnectableObject.

Definition at line 1180 of file ossimResampler.cpp.

References ossimKeywordlist::find().

 {   
    const char* resamplerType = kwl.find(prefix, RESAMPLER_CONVOLUTION_TYPE_KW);
    const char* scaleX        = kwl.find(prefix, RESAMPLER_SCALE_X_KW);
    const char* scaleY        = kwl.find(prefix, RESAMPLER_SCALE_Y_KW);
    const char* cubicParameter= kwl.find(prefix, RESAMPLER_CUBIC_PARAMETER_KW);
    
    if(cubicParameter)
    {
       theCubicAdjustableParameter = ossimString(cubicParameter).toDouble();
       if(theCubicAdjustableParameter < -1) theCubicAdjustableParameter = -1;
       if(theCubicAdjustableParameter > 0)  theCubicAdjustableParameter = 0;
    }
    else
    {
       theCubicAdjustableParameter = -.5;
    }
    if(resamplerType)
    {
       ossimString test =ossimString(resamplerType).upcase().trim();
       
       if( test == "BICUBIC")
       {
          setResamplerType(ossimResampler::ossimResampler_BICUBIC);
       }
       else if( test == "BILINEAR")
       {
          setResamplerType(ossimResampler::ossimResampler_BILINEAR);
       }
       else
       {
          setResamplerType(ossimResampler::ossimResampler_NEAREST_NEIGHBOR);
       }
    }
    if(scaleX&&scaleY)
    {
       setRatio(ossimDpt(ossimString(scaleX).toDouble(),
                         ossimString(scaleY).toDouble()));
    }
    allocateWeightTable();
    generateWeightTable();
    
    return ossimConnectableObject::loadState(kwl, prefix);
 }

◆ resample() [1/3]

void ossimResampler::resample	(	ossimImageData *	input,
		ossimImageData *	output
	)

virtual

Will apply the kernel to the input and write it to the output.

Note: theTable is re-generated if the Max(out_width, out_height). changes from the previous call.

Definition at line 58 of file ossimResampler.cpp.

References ossimImageData::getBuf(), ossimRectilinearDataObject::getScalarType(), OSSIM_FLOAT32, OSSIM_FLOAT64, OSSIM_NORMALIZED_DOUBLE, OSSIM_NORMALIZED_FLOAT, OSSIM_SSHORT16, OSSIM_UINT16, OSSIM_UINT32, OSSIM_UINT8, OSSIM_USHORT11, OSSIM_USHORT12, OSSIM_USHORT13, OSSIM_USHORT14, OSSIM_USHORT15, ossimNotify(), ossimNotifyLevel_WARN, resampleTile(), theWeightTableX, and theWeightTableY.

Referenced by resample().

 {
    if(!input||
       !output ||
       !input->getBuf() ||
       !output->getBuf())
    {
       return;
    }
 
    if(theWeightTableX&&theWeightTableY)
    {
       ossimScalarType scalarType = input->getScalarType();
       switch(scalarType)
       {
          case OSSIM_UINT8:
          {
             resampleTile(ossim_uint8(0), // dummy template variable
                          input,
                          output);
             break;
          }
          case OSSIM_UINT16:
          case OSSIM_USHORT11:
          case OSSIM_USHORT12:
          case OSSIM_USHORT13:
          case OSSIM_USHORT14:
          case OSSIM_USHORT15:
          {
             resampleTile(ossim_uint16(0), // dummy template variable
                          input,
                          output);
             break;
          }
          case OSSIM_SSHORT16:
          {
             resampleTile(ossim_sint16(0), // dummy template variable
                          input,
                          output);
             break;
          }      
          case OSSIM_UINT32:
          {
             resampleTile(ossim_uint32(0), // dummy template variable
                          input,
                          output);
             break;
          }      
          case OSSIM_FLOAT32:
          case OSSIM_NORMALIZED_FLOAT:
          {
             resampleTile(ossim_float32(0.0), // dummy template variable
                          input,
                          output);
             break;
          }
          case OSSIM_FLOAT64:
          case OSSIM_NORMALIZED_DOUBLE:
          {
             resampleTile(ossim_float64(0.0), // dummy template variable
                          input,
                          output);
             break;
          }
          default:
          {
             ossimNotify(ossimNotifyLevel_WARN)
                << "ossimResampler::resample error: unknown scalar type:  "
                << scalarType
                << endl;
             
          }
       }
    }      
    // convolve the input and copy to output.
 }

◆ resample() [2/3]

void ossimResampler::resample	(	ossimImageData *	input,
		ossimImageData *	output,
		const ossimDpt &	ul,
		const ossimDpt &	ur,
		const ossimDpt &	deltaUl,
		const ossimDpt &	deltaUr,
		const ossimDpt &	length
	)

virtual

Definition at line 136 of file ossimResampler.cpp.

References ossimImageData::getImageRectangle(), and resample().

 {
    resample(input,
             output,
             output->getImageRectangle(),
             ul,
             ur,
             deltaUl,
             deltaUr,
             length);
 }

◆ resample() [3/3]

void ossimResampler::resample	(	ossimImageData *	input,
		ossimImageData *	output,
		const ossimIrect &	outputSubRect,
		const ossimDpt &	ul,
		const ossimDpt &	ur,
		const ossimDpt &	deltaUl,
		const ossimDpt &	deltaUr,
		const ossimDpt &	length
	)

virtual

Definition at line 154 of file ossimResampler.cpp.

References ossimImageData::getBuf(), ossimRectilinearDataObject::getScalarType(), OSSIM_FLOAT32, OSSIM_FLOAT64, OSSIM_NORMALIZED_DOUBLE, OSSIM_NORMALIZED_FLOAT, OSSIM_SINT16, OSSIM_UINT16, OSSIM_UINT32, OSSIM_UINT8, OSSIM_USHORT11, OSSIM_USHORT12, OSSIM_USHORT13, OSSIM_USHORT14, OSSIM_USHORT15, ossimNotify(), ossimNotifyLevel_WARN, resampleTile(), theWeightTableX, and theWeightTableY.

 {
    if(!input||
       !output ||
       !input->getBuf() ||
       !output->getBuf())
    {
       return;
    }
    
    if(theWeightTableX&&theWeightTableY)
    {
       ossimScalarType scalarType = input->getScalarType();
       switch(scalarType)
       {
          case OSSIM_UINT8:
          {
             resampleTile(ossim_uint8(0), // dummy template variable
                          input,
                          output,
                          outputSubRect,
                          ul,
                          ur,
                          deltaUl,
                          deltaUr,
                          length);
             break;
          }
          case OSSIM_UINT16:
          case OSSIM_USHORT11:
          case OSSIM_USHORT12:
          case OSSIM_USHORT13:
          case OSSIM_USHORT14:
          case OSSIM_USHORT15:
          {
             resampleTile(ossim_uint16(0), // dummy template variable
                          input,
                          output,
                          outputSubRect,
                          ul,
                          ur,
                          deltaUl,
                          deltaUr,
                          length);
             break;
          }
          case OSSIM_SINT16:
          {
             resampleTile(ossim_sint16(0), // dummy template variable
                          input,
                          output,
                          outputSubRect,
                          ul,
                          ur,
                          deltaUl,
                          deltaUr,
                          length);
             break;
          }      
          case OSSIM_UINT32:
          {
             resampleTile(ossim_uint32(0), // dummy template variable
                          input,
                          output,
                          outputSubRect,
                          ul,
                          ur,
                          deltaUl,
                          deltaUr,
                          length);
             break;
          }      
          case OSSIM_FLOAT32:
          case OSSIM_NORMALIZED_FLOAT:
          {
             resampleTile(ossim_float32(0.0), // dummy template variable
                          input,
                          output,
                          outputSubRect,
                          ul,
                          ur,
                          deltaUl,
                          deltaUr,
                          length);
             break;
          }
          case OSSIM_FLOAT64:
          case OSSIM_NORMALIZED_DOUBLE:
          {
             resampleTile(ossim_float64(0.0), // dummy template variable
                          input,
                          output,
                          outputSubRect,
                          ul,
                          ur,
                          deltaUl,
                          deltaUr,
                          length);
             break;
          }
          default:
          {
             ossimNotify(ossimNotifyLevel_WARN)
                << "ossimResampler::resample error: unknown scalar type:  "
                << scalarType
                << endl;
          }
       }
    }
    
 }

◆ resampleFullTile()

template<class T >

void ossimResampler::resampleFullTile	(	T	,
		ossimImageData *	input,
		ossimImageData *	output
	)

protected

Definition at line 601 of file ossimResampler.cpp.

References ossimImageData::getBuf(), ossimImageData::getHeight(), ossimImageData::getMaxPix(), ossimImageData::getMinPix(), ossimImageData::getNumberOfBands(), ossimImageData::getOrigin(), ossimImageData::getWidth(), max, theKernelHeight, theKernelWidth, theOutputToInputRatio, theTableWidthX, theTableWidthY, theWeightTableX, theWeightTableY, ossimIpt::x, ossimDpt::x, x, ossimIpt::y, and ossimDpt::y.

Referenced by resampleTile().

 {
    ossim_int32 maxInputSize  = std::max(input->getWidth(),  input->getHeight());
    ossim_int32 maxOutputSize = std::max(output->getWidth(), output->getHeight());
    ossim_int32 k;
    double *h     = new double[maxInputSize];
    ossim_int32 *Lx        = new ossim_int32[maxOutputSize];
    ossim_int32 *Ly        = new ossim_int32[maxOutputSize];
    ossim_int32 out_height = output->getHeight();
    ossim_int32 out_width  = output->getWidth();
    ossim_int32 in_width   = input->getWidth();
    ossim_int32 in_height  = input->getHeight();
    ossim_int32 j;
    ossim_int32 l;
    
    ossimIpt origin=output->getOrigin();
    ossimIpt scaledOriginShift(input->getOrigin()*-1);
 
    ossim_int32 evenKernelW = (ossim_int32)(!(theKernelWidth%2));
    ossim_int32 evenKernelH = (ossim_int32)(!(theKernelHeight%2));
    ossim_int32 kernelHorizontalShift = (ossim_int32)(-theKernelWidth/2.0+evenKernelW);
    ossim_int32 kernelVerticalShift   = (ossim_int32)(-theKernelHeight/2.0+evenKernelH);
    
    for (k = 0; k < maxOutputSize; ++k)
    {
       Lx[k] = (ossim_int32)(scaledOriginShift.x+((k+origin.x)/
                                            theOutputToInputRatio.x));
    }
    for (k = 0; k < maxOutputSize; ++k)
    {
       Ly[k] = (ossim_int32)(scaledOriginShift.y+((k+origin.y)/
                                            theOutputToInputRatio.y));
    }
    for(ossim_int32 band = 0; band < (ossim_int32)input->getNumberOfBands();++band)
    {
       const T* inputBuf  = (const T*)(input->getBuf(band));
       T*       outputBuf = (T*)(output->getBuf(band));
       double  minPix    = static_cast<T>(input->getMinPix()[band]);
       double  maxPix    = static_cast<T>(input->getMaxPix()[band]);
       
       for (k = 0; k < out_height; ++k)
       {
          int indexMod = (int)fmod((k+origin.y), theOutputToInputRatio.y);
          if(indexMod >= theTableWidthY) indexMod = theTableWidthY - 1;
          if(indexMod <0) indexMod = 0;
          for (j = 0; j < in_width; ++j)
          {
             h[j] = 0.0;
             for (l = 0; l < theKernelHeight; ++l)
             {
                ossim_int32 index = Ly[k] + l + kernelVerticalShift;
                if ((index >= 0) && (index < in_height))
                {
                   h[j] += ((double)inputBuf[index*in_width +j]) *
                           theWeightTableY[theKernelHeight - l-1][indexMod];
                }
             }
          }
          for (ossim_int32 m = 0; m < out_width; ++m)
          {
             double x = 0.0;
             int indexMod = (int)fmod((m+origin.x), theOutputToInputRatio.x);
             if(indexMod >= theTableWidthX) indexMod = theTableWidthX-1;
             if(indexMod <0) indexMod = 0;
             
             for (l = 0; l < theKernelWidth; ++l)
             {
                ossim_int32 index = Lx[m] + l + kernelHorizontalShift;
                if ((index >= 0) && (index < in_width))
                {
          
                   x += h[index] * theWeightTableX[theKernelWidth - l-1][indexMod];
                }
             }
             if (x < minPix)
             {
                outputBuf[k*out_width +m] = static_cast<T>(minPix);
             }
             else if (x > maxPix)
             {
                outputBuf[k*out_width +m] = static_cast<T>(maxPix);
             }
             else
             {
                outputBuf[k*out_width +m] = static_cast<T>(x);
             }
          }
       }
    }
    
    delete [] h;
    delete [] Lx;   
    delete [] Ly;
 }

◆ resampleNearestNeighbor() [1/2]

void ossimResampler::resampleNearestNeighbor	(	ossimImageData *	input,
		ossimImageData *	output,
		const ossimIrect &	outputSubRect,
		const ossimDpt &	ul,
		const ossimDpt &	ur,
		const ossimDpt &	deltaUl,
		const ossimDpt &	deltaUr,
		const ossimDpt &	length
	)

virtual

Definition at line 273 of file ossimResampler.cpp.

References ossimImageData::getBuf(), ossimRectilinearDataObject::getScalarType(), OSSIM_FLOAT32, OSSIM_FLOAT64, OSSIM_NORMALIZED_DOUBLE, OSSIM_NORMALIZED_FLOAT, OSSIM_SINT16, OSSIM_UINT16, OSSIM_UINT32, OSSIM_UINT8, OSSIM_USHORT11, OSSIM_USHORT12, OSSIM_USHORT13, OSSIM_USHORT14, OSSIM_USHORT15, ossimNotify(), ossimNotifyLevel_WARN, and resampleTileNearestNeighbor().

Referenced by resampleNearestNeighbor().

 {
    if(!input||
       !output ||
       !input->getBuf() ||
       !output->getBuf())
    {
       return;
    }
    
    ossimScalarType scalarType = input->getScalarType();
    switch(scalarType)
    {
       case OSSIM_UINT8:
       {
          resampleTileNearestNeighbor(ossim_uint8(0),// dummy template variable
                                      input,
                                      output,
                                      outputSubRect,
                                      ul,
                                      ur,
                                      deltaUl,
                                      deltaUr,
                                      length);
          break;
       }
       case OSSIM_UINT16:
       case OSSIM_USHORT11:
       case OSSIM_USHORT12:
       case OSSIM_USHORT13:
       case OSSIM_USHORT14:
       case OSSIM_USHORT15:
       {
          resampleTileNearestNeighbor(ossim_uint16(0),// dummy template variable
                                      input,
                                      output,
                                      outputSubRect,
                                      ul,
                                      ur,
                                      deltaUl,
                                      deltaUr,
                                      length);
          break;
       }
       case OSSIM_SINT16:
       {
          resampleTileNearestNeighbor(ossim_sint16(0),// dummy template variable
                                      input,
                                      output,
                                      outputSubRect,
                                      ul,
                                      ur,
                                      deltaUl,
                                      deltaUr,
                                      length);
          break;
       }      
       case OSSIM_UINT32:
       {
          resampleTileNearestNeighbor(ossim_uint32(0),// dummy template variable
                                      input,
                                      output,
                                      outputSubRect,
                                      ul,
                                      ur,
                                      deltaUl,
                                      deltaUr,
                                      length);
          break;
       }      
       case OSSIM_FLOAT32:
       case OSSIM_NORMALIZED_FLOAT:
       {
          resampleTileNearestNeighbor(ossim_float32(0.0),
                                      input,
                                      output,
                                      outputSubRect,
                                      ul,
                                      ur,
                                      deltaUl,
                                      deltaUr,
                                      length);
          break;
       }
       case OSSIM_FLOAT64:
       case OSSIM_NORMALIZED_DOUBLE:
       {
          resampleTileNearestNeighbor(ossim_float64(0.0),
                                      input,
                                      output,
                                      outputSubRect,
                                      ul,
                                      ur,
                                      deltaUl,
                                      deltaUr,
                                      length);
          break;
       }
       default:
       {
          ossimNotify(ossimNotifyLevel_WARN)
             << "ossimResampler::resample error: unknown scalar type:  "
             << scalarType
             << endl;
       }
    }   
 }

◆ resampleNearestNeighbor() [2/2]

void ossimResampler::resampleNearestNeighbor	(	ossimImageData *	input,
		ossimImageData *	output,
		const ossimDpt &	ul,
		const ossimDpt &	ur,
		const ossimDpt &	deltaUl,
		const ossimDpt &	deltaUr,
		const ossimDpt &	length
	)

virtual

Definition at line 388 of file ossimResampler.cpp.

References ossimImageData::getImageRectangle(), and resampleNearestNeighbor().

 {
    resampleNearestNeighbor(input,
                            output,
                            output->getImageRectangle(),
                            ul,
                            ur,
                            deltaUl,
                            deltaUr,
                            length);
 }

◆ resamplePartialTile()

template<class T >

void ossimResampler::resamplePartialTile	(	T	,
		ossimImageData *	input,
		ossimImageData *	output
	)

protected

Definition at line 432 of file ossimResampler.cpp.

References ossimImageData::getBuf(), ossimImageData::getHeight(), ossimImageData::getMaxPix(), ossimImageData::getMinPix(), ossimImageData::getNullPix(), ossimImageData::getNumberOfBands(), ossimImageData::getOrigin(), ossimImageData::getWidth(), ossim::isnan(), ossimImageData::isNull(), max, ossim::nan(), theKernelHeight, theKernelWidth, theOutputToInputRatio, theTableWidthX, theTableWidthY, theWeightTableX, theWeightTableY, ossimIpt::x, ossimDpt::x, x, ossimIpt::y, and ossimDpt::y.

Referenced by resampleTile().

 {   
    ossim_int32 maxInputSize  = std::max(input->getWidth(),  input->getHeight());
    ossim_int32 maxOutputSize = std::max(output->getWidth(), output->getHeight());
    ossim_int32 k;
    double *h  = new double[maxInputSize];
    int    *Lx = new int[maxOutputSize];
    int    *Ly = new int[maxOutputSize];
    ossim_int32 out_height = output->getHeight();
    ossim_int32 out_width  = output->getWidth();
    ossim_int32 in_width   = input->getWidth();
    ossim_int32 in_height  = input->getHeight();
    ossim_int32 j;
    ossim_int32 l;
 
    ossimIpt origin=output->getOrigin();
    ossimIpt scaledOriginShift(input->getOrigin()*-1);
 
    ossim_int32 evenKernelW = (ossim_int32)(!(theKernelWidth%2));
    ossim_int32 evenKernelH = (ossim_int32)(!(theKernelHeight%2));
    ossim_int32 kernelHorizontalShift = (ossim_int32)(-theKernelWidth/2.0+evenKernelW);
    ossim_int32 kernelVerticalShift   = (ossim_int32)(-theKernelHeight/2.0+evenKernelH);
    
    for (k = 0; k < maxOutputSize; ++k)
    {
       Lx[k] = (ossim_int32)(scaledOriginShift.x+((k+origin.x)/
                                            theOutputToInputRatio.x));
    }
    for (k = 0; k < maxOutputSize; ++k)
    {
       Ly[k] = (ossim_int32)(scaledOriginShift.y+((k+origin.y)/
                                            theOutputToInputRatio.y));
    }
    for(ossim_int32 band = 0; band < (ossim_int32)input->getNumberOfBands();++band)
    {
       const T* inputBuf  = static_cast<T*>(input->getBuf(band));
       T*       outputBuf = static_cast<T*>(output->getBuf(band));
       T        minPix    = static_cast<T>(input->getMinPix(band));
       T        maxPix    = static_cast<T>(input->getMaxPix(band));
       T        np        = static_cast<T>(input->getNullPix(band));
       
       for (k = 0; k < out_height; ++k)
       {
          ossim_int32 indexMod = (ossim_int32)fmod((k+origin.y), theOutputToInputRatio.y);
          if(indexMod >= theTableWidthY) indexMod = theTableWidthY - 1;
          if(indexMod <0) indexMod = 0;
          for (j = 0; j < in_width; ++j)
          {
             h[j] = 0.0;
             ossim_int32 count = 0;
             double lastValue = ossim::nan();
             for (l = 0; l < theKernelHeight; ++l)
             {
                ossim_int32 index = Ly[k] + l + kernelVerticalShift;
                if ((index >= 0) && (index < in_height))
                {
                   ossim_int32 offset = index*in_width +j;
                   if(!input->isNull(offset))
                   {
                      lastValue = (double)inputBuf[offset];
                      h[j] += lastValue *
                              theWeightTableY[theKernelHeight - l-1][indexMod];
                      ++count;
                   }
                   // I think instead of skipping to next value I'll just assume 0
                   
                   // this was code to skip to next non-null value and use it
                   // 
 //                   else
 //                   {
 //                      for(ossim_int32 templ = l; templ < theKernelHeight; ++templ)
 //                      {
 //                         index = Ly[k] + templ + kernelVerticalShift;
 //                         offset = index*in_width +j;
 //                         if(!input->isNull(offset))
 //                         {
 //                            lastValue = (double)inputBuf[offset];
 //                            break;
 //                         }
 //                      }
 //                      if(ossim::isnan(lastValue) == false)
 //                      {
 //                         h[j] += lastValue *
 //                                 theWeightTableY[theKernelHeight - l-1][indexMod];
                         
 //                         ++count;
 //                      }
 //                      else
 //                      {
 //                         break;
 //                      }
 //                   }
                }
             }
             if(!count)
             {
                h[j] = ossim::nan();
             }
          }
          for (ossim_int32 m = 0; m < out_width; ++m)
          {
             double x = 0.0;
             ossim_int32 indexMod = (ossim_int32)fmod((m+origin.x), theOutputToInputRatio.x);
             if(indexMod >= theTableWidthX) indexMod = theTableWidthX-1;
             if(indexMod <0) indexMod = 0;
             
             if(input->isNull(ossimIpt(Lx[m]-scaledOriginShift.x, Ly[k]-scaledOriginShift.y)))
             {
                outputBuf[k*out_width +m] = np;
             }
             else
             {
                for (l = 0; l < theKernelWidth; ++l)
                {
                   ossim_int32 index = Lx[m] + l + kernelHorizontalShift;
                   if ((index >= 0) && (index < in_width))
                   {
                      if(ossim::isnan(h[index]) == false)
                      {
                         x += h[index] * theWeightTableX[theKernelWidth - l-1][indexMod];
                      }
 
                      // I am commenting out the code that searches for the next
                      // non null value with the kernel range.  This will have the
                      // same effect as multiplying by 0.0 for the NULL value.
                      //
 //                      else
 //                      {
 //                         for(ossim_int32 templ = l; templ < l; ++templ)
 //                         {
 //                            ossim_int32 index = Lx[m] + templ + kernelHorizontalShift;
 //                            if(ossim::isnan(h[index]) == false))
 //                            {
 //                               lastValue = h[index];
 //                               break;
 //                            }
 //                         }
 //                         if(ossim::isnan(lastValue) == false)
 //                         {
 //                            x += lastValue * theWeightTableX[theKernelWidth - l-1][indexMod];
 //                         }
 //                      }
                   }
                }
                if (x < minPix)
                {
                   outputBuf[k*out_width +m] = static_cast<T>(minPix);
                }
                else if (x > maxPix)
                {
                   outputBuf[k*out_width +m] = static_cast<T>(maxPix);
                }
                else
                {
                   outputBuf[k*out_width +m] = static_cast<T>(x);
                }
             }
          }
       }
    }
    
    delete [] h;
    delete [] Lx;   
    delete [] Ly;
 }

◆ resampleTile() [1/2]

template<class T >

void ossimResampler::resampleTile	(	T	,
		ossimImageData *	input,
		ossimImageData *	output
	)

protected

Definition at line 408 of file ossimResampler.cpp.

References ossimDataObject::getDataObjectStatus(), OSSIM_FULL, OSSIM_PARTIAL, resampleFullTile(), and resamplePartialTile().

Referenced by resample(), and resampleTile().

 {
    switch(input->getDataObjectStatus())
    {
       case OSSIM_FULL:
       {
          resampleFullTile((T)0, input, output);
          break;
       }
       case OSSIM_PARTIAL:
       {      
          resamplePartialTile((T)0, input, output);
          break;
       }
       default:
       {
          break;
       }
    }
 }

◆ resampleTile() [2/2]

template<class T >

void ossimResampler::resampleTile	(	T	,
		ossimImageData *	input,
		ossimImageData *	output,
		const ossimIrect &	outputSubRect,
		const ossimDpt &	ul,
		const ossimDpt &	ur,
		const ossimDpt &	deltaUl,
		const ossimDpt &	deltaUr,
		const ossimDpt &	length
	)

protected

Definition at line 701 of file ossimResampler.cpp.

References ossimRefPtr< T >::get(), ossimImageData::getBuf(), ossimImageData::getHeight(), ossimImageData::getImageRectangle(), ossimImageData::getNullPix(), ossimImageData::getNumberOfBands(), ossimImageData::getOrigin(), ossimRectilinearDataObject::getScalarType(), ossimImageData::getWidth(), ossimIrect::height(), ossimImageData::initialize(), ossimDrect::lr(), ossimResampler_NEAREST_NEIGHBOR, resampleTile(), ossimImageData::setOrigin(), theKernelHeight, theKernelWidth, theOutputToInputRatio, theResamplerType, ossimIrect::ul(), ossimDrect::ul(), ossimIrect::width(), ossimIpt::x, ossimDpt::x, x, ossimIpt::y, ossimDpt::y, and y.

 {
    ossimRefPtr<ossimImageData> dupIn = input;
    ossimDpt origin = input->getOrigin();
    ossimDpt newInputUl = inputUl;
    ossimDpt newInputUr = inputUr;
    ossimDpt newDeltaUl = deltaUl;
    ossimDpt newDeltaUr = deltaUr;
 
    if(theResamplerType != ossimResampler_NEAREST_NEIGHBOR)
    {
       newInputUl = ossimDpt(inputUl.x * theOutputToInputRatio.x,
                             inputUl.y * theOutputToInputRatio.y);
       newInputUr = ossimDpt(inputUr.x * theOutputToInputRatio.x,
                             inputUr.y * theOutputToInputRatio.y);
       newDeltaUl = ossimDpt(deltaUl.x * theOutputToInputRatio.x,
                             deltaUl.y * theOutputToInputRatio.y);
       newDeltaUr = ossimDpt(deltaUr.x * theOutputToInputRatio.x,
                             deltaUr.y * theOutputToInputRatio.y);
 
       ossimDpt newLl = newInputUl + newDeltaUl*outLength.y;
       ossimDpt newLr = newInputUr + newDeltaUr*outLength.y;
       
       ossimDrect newBoundingRect(newInputUl,
                                  newInputUr,
                                  newLl,
                                  newLr);
       
 
       newBoundingRect = ossimDrect(newBoundingRect.ul() - ossimDpt(theKernelWidth, theKernelHeight),
                                    newBoundingRect.lr() + ossimDpt(theKernelWidth, theKernelHeight));
       ossimIrect roundedRect = newBoundingRect;
       origin = roundedRect.ul();
 
       dupIn = new ossimImageData(NULL,
                                  input->getScalarType(),
                                  input->getNumberOfBands(),
                                  roundedRect.width(),
                                  roundedRect.height());
       dupIn->setOrigin(roundedRect.ul());
       dupIn->initialize();
       resampleTile(static_cast<T>(0), input, dupIn.get());
    }
    long    inWidth        = dupIn->getWidth();
    long    inHeight       = dupIn->getHeight();
    double  stepSizeWidth  = 1.0/outLength.x;
    double  stepSizeHeight = 1.0/outLength.y;   
    ossimIrect rect = dupIn->getImageRectangle();
    
    ossimDpt startSave(newInputUl.x - rect.ul().x,
                       newInputUl.y - rect.ul().y );
    ossimDpt endSave(newInputUr.x - rect.ul().x,
                     newInputUr.y - rect.ul().y);
 
    ossimIrect outputRect = output->getImageRectangle();
    ossimIpt subRectUl = outputSubRect.ul();
    long     subRectH  = outputSubRect.height();
    long     subRectW  = outputSubRect.width();
    
    ossimIpt outputRectUl    = outputRect.ul();
    long outputRectW         = outputRect.width();
    long resultOffset = (subRectUl.y - outputRectUl.y)*outputRectW + (subRectUl.x - outputRectUl.x);
 
    for(ossim_uint32 band = 0; band < input->getNumberOfBands(); ++band)
    {
       T* resultBuf       = static_cast<T*>(output->getBuf(band))+resultOffset;
       const T *sourceBuf = static_cast<T*>(dupIn->getBuf(band));
       ossimDpt start = startSave;
       ossimDpt end   = endSave;
       T np = (T)output->getNullPix(band);
                         
       for(long y = 0; y < subRectH; ++y)
       {
          double deltaX = (end.x - start.x)*stepSizeWidth;
          double deltaY = (end.y - start.y)*stepSizeHeight;
          ossimDpt pointXY = start;
          
          for(long x = 0; x < subRectW; ++x)
          {
             int xPixel = pointXY.x<0?(int)floor(pointXY.x):(int)pointXY.x;
             int yPixel = pointXY.y<0?(int)floor(pointXY.y):(int)pointXY.y;
 
             
             if( (xPixel >=0) && (xPixel < inWidth) &&
                 (yPixel >=0) && (yPixel < inHeight))
             {
                resultBuf[x] = sourceBuf[yPixel*inWidth + xPixel];
             }
             else
             {
                resultBuf[x] = np;
             }
             
             pointXY.y += deltaY;
             pointXY.x += deltaX;
          }
          resultBuf += outputRectW;
          
          start.x += newDeltaUl.x;
          start.y += newDeltaUl.y;
          end.x   += newDeltaUr.x;
          end.y   += newDeltaUr.y;
       }
    }
    dupIn = 0;
 }

◆ resampleTileNearestNeighbor() [1/2]

template<class T >

void ossimResampler::resampleTileNearestNeighbor	(	T	,
		ossimImageData *	input,
		ossimImageData *	output,
		const ossimDpt &	ul,
		const ossimDpt &	ur,
		const ossimDpt &	deltaUl,
		const ossimDpt &	deltaUr,
		const ossimDpt &	length
	)

protected

Definition at line 817 of file ossimResampler.cpp.

References ossimImageData::getImageRectangle().

Referenced by resampleNearestNeighbor().

 {
    resampleTileNearestNeighbor((T)0,
                                input,
                                output,
                                output->getImageRectangle(),
                                ul,
                                ur,
                                deltaUl,
                                deltaUr,
                                length);
 }

◆ resampleTileNearestNeighbor() [2/2]

template<class T >

void ossimResampler::resampleTileNearestNeighbor	(	T	,
		ossimImageData *	input,
		ossimImageData *	output,
		const ossimIrect &	subRect,
		const ossimDpt &	ul,
		const ossimDpt &	ur,
		const ossimDpt &	deltaUl,
		const ossimDpt &	deltaUr,
		const ossimDpt &	length
	)

protected

Definition at line 838 of file ossimResampler.cpp.

References ossimImageData::getBuf(), ossimImageData::getHeight(), ossimImageData::getImageRectangle(), ossimImageData::getNullPix(), ossimImageData::getNumberOfBands(), ossimImageData::getWidth(), ossimIrect::height(), ossimIrect::ul(), ossimIrect::width(), ossimIpt::x, ossimDpt::x, x, ossimIpt::y, ossimDpt::y, and y.

 {   
    long    inWidth        = input->getWidth();
    long    inHeight       = input->getHeight();
    double  stepSizeWidth  = 1.0/length.x;
    double  stepSizeHeight = 1.0/length.y;
    ossimIrect rect        = input->getImageRectangle();
    
    ossimDpt startSave(ul.x - rect.ul().x,
                       ul.y - rect.ul().y );
    
    ossimDpt endSave(ur.x - rect.ul().x,
                     ur.y - rect.ul().y);
 
    ossimIrect outputRect = output->getImageRectangle();
    ossimIpt subRectUl = outputSubRect.ul();
 //   ossimIpt subRectUl((int)outputSubRect.ul().x,
 //                      (int)outputSubRect.ul().y);
    long     subRectH  = outputSubRect.height();
    long     subRectW  = outputSubRect.width();
    
    ossimIpt outputRectUl    = outputRect.ul();
    long outputRectW         = outputRect.width();
 
    long resultOffset = (subRectUl.y - outputRectUl.y)*outputRectW + (subRectUl.x - outputRectUl.x);
    for(ossim_uint32 band = 0; band < input->getNumberOfBands(); ++band)
    {
       T* resultBuf       = static_cast<T*>(output->getBuf(band))+resultOffset;
       const T *sourceBuf = static_cast<T*>(input->getBuf(band));
       ossimDpt start = startSave;
       ossimDpt end   = endSave;
       T inNp  = (T)input->getNullPix(band);
       T outNp = (T)output->getNullPix(band);
                         
       for(long y = 0; y < subRectH; ++y)
       {
          double deltaX = (end.x - start.x)*stepSizeWidth;
          double deltaY = (end.y - start.y)*stepSizeHeight;
          ossimDpt pointXY = start;
          
          for(long x = 0; x < subRectW; ++x)
          {
             int xPixel = pointXY.x<0?(int)floor(pointXY.x):(int)pointXY.x;
             int yPixel = pointXY.y<0?(int)floor(pointXY.y):(int)pointXY.y;
 
             
              if( (xPixel >=0) && (xPixel < inWidth) &&
                  (yPixel >=0) && (yPixel < inHeight))
              {
                 T value = sourceBuf[yPixel*inWidth + xPixel];
 
                 if(value != inNp)
                 {
                    resultBuf[x] = value;
                 }
                 else
                 {
                    resultBuf[x] = outNp;
                 }
             }
             else
             {
                resultBuf[x] = outNp;
             }
             
             pointXY.y += deltaY;
             pointXY.x += deltaX;
          }
          resultBuf += outputRectW;
          
          start.x += deltaUl.x;
          start.y += deltaUl.y;
          end.x   += deltaUr.x;
          end.y   += deltaUr.y;
       }
    }
 }

◆ saveState()

bool ossimResampler::saveState	(	ossimKeywordlist &	kwl,
		const char *	prefix = `0`
	)		const

virtual

Method to save the state of an object to a keyword list. Return true if ok or false on error.

Reimplemented from ossimConnectableObject.

Definition at line 1226 of file ossimResampler.cpp.

References ossimKeywordlist::add(), getResamplerType(), ossimResampler_BICUBIC, and ossimResampler_BILINEAR.

 {
    ossimString resamplerType;
    if(getResamplerType() == ossimResampler_BICUBIC)
    {
       resamplerType = "BICUBIC";
    }
    else if(getResamplerType() == ossimResampler_BILINEAR)
    {
       resamplerType = "BILINEAR";
    }
    else 
    {
       resamplerType = "NEAREST_NEIGHBOR";
    }
    kwl.add(prefix,
            RESAMPLER_CONVOLUTION_TYPE_KW,
            resamplerType.c_str(),
            true);
 
    kwl.add(prefix,
            RESAMPLER_SCALE_X_KW,
            theOutputToInputRatio.x,
            true);
 
    kwl.add(prefix,
            RESAMPLER_SCALE_Y_KW,
            theOutputToInputRatio.y,
            true);
 
    kwl.add(prefix,
            RESAMPLER_CUBIC_PARAMETER_KW,
            theCubicAdjustableParameter,
            true);
    
    return ossimConnectableObject::saveState(kwl, prefix);
 }

◆ setCubicParameter()

virtual void ossimResampler::setCubicParameter ( double parameter )

inlinevirtual

Definition at line 102 of file ossimResampler.h.

References generateWeightTable(), ossimResampler_BICUBIC, theCubicAdjustableParameter, and theResamplerType.

       {
          theCubicAdjustableParameter = parameter;
          theCubicAdjustableParameter = theCubicAdjustableParameter<-1?-1:theCubicAdjustableParameter;
          theCubicAdjustableParameter = theCubicAdjustableParameter>0?0:theCubicAdjustableParameter;
          if(theResamplerType ==  ossimResampler_BICUBIC)
          {
             generateWeightTable();
          }
       }

◆ setRatio() [1/2]

void ossimResampler::setRatio ( double outputToInputRatio )

Will reallocate the table

Definition at line 1134 of file ossimResampler.cpp.

 {
    // make it square
    setRatio(ossimDpt(outputToInputRatio, outputToInputRatio));
 }

◆ setRatio() [2/2]

void ossimResampler::setRatio ( const ossimDpt & outputToInputRatio )

Definition at line 1140 of file ossimResampler.cpp.

References allocateWeightTable(), generateWeightTable(), theOutputToInputRatio, theTableWidthX, theTableWidthY, ossimDpt::x, and ossimDpt::y.

 {
    // make it square
    theOutputToInputRatio.x = (outputToInputRatio.x);
    theOutputToInputRatio.y = (outputToInputRatio.y);
 
    if((theTableWidthX != ossim::round<int>(outputToInputRatio.x))||
       (theTableWidthY != ossim::round<int>(outputToInputRatio.y)))
    {
       allocateWeightTable();
       generateWeightTable();
    }
 }

◆ setResamplerType()

void ossimResampler::setResamplerType ( ossimResLevelResamplerType type )

virtual

Will re-allocate the table

Definition at line 1090 of file ossimResampler.cpp.

References allocateWeightTable(), generateWeightTable(), ossimResampler_BICUBIC, ossimResampler_BILINEAR, ossimResampler_NEAREST_NEIGHBOR, ossimResampler_NONE, theKernelHeight, theKernelWidth, and theResamplerType.

 {
    if(theResamplerType != type)
    {
       theResamplerType = type;
       
       switch(theResamplerType)
       {
       case ossimResampler_NONE:
       {
     theResamplerType = ossimResampler_NEAREST_NEIGHBOR;
          theKernelWidth  = 1;
          theKernelHeight = 1;
 
          break;
       }
       case ossimResampler_NEAREST_NEIGHBOR:
       {
          theKernelWidth  = 1;
          theKernelHeight = 1;
 
          break;
       }
       case ossimResampler_BILINEAR:
       {
          theKernelWidth  = 2;
          theKernelHeight = 2;
 
          break;
       }
       case ossimResampler_BICUBIC:
       {
          theKernelWidth  = 4;
          theKernelHeight = 4;
          
          break;
       }
       }
       
       allocateWeightTable();
       generateWeightTable();
    }
 }

Member Data Documentation

◆ theCubicAdjustableParameter

double ossimResampler::theCubicAdjustableParameter

protected

This adjustable parameter can vary between -1 to 0. as the paramter goes from 0 to -1 the output goes from blocky to smooth. The default value is -.5

Definition at line 165 of file ossimResampler.h.

Referenced by getCubicC0(), getCubicC1(), getCubicC2(), getCubicC3(), getCubicParameter(), and setCubicParameter().

◆ theKernelHeight

ossim_int32 ossimResampler::theKernelHeight

protected

Definition at line 153 of file ossimResampler.h.

Referenced by getKernelHeight(), resampleFullTile(), resamplePartialTile(), resampleTile(), and setResamplerType().

◆ theKernelWidth

ossim_int32 ossimResampler::theKernelWidth

protected

Definition at line 152 of file ossimResampler.h.

Referenced by getKernelWidth(), resampleFullTile(), resamplePartialTile(), resampleTile(), and setResamplerType().

◆ theOutputToInputRatio

ossimDpt ossimResampler::theOutputToInputRatio

protected

Definition at line 146 of file ossimResampler.h.

Referenced by allocateWeightTable(), getRatio(), resampleFullTile(), resamplePartialTile(), resampleTile(), and setRatio().

◆ theResamplerType

ossimResLevelResamplerType ossimResampler::theResamplerType

protected

Definition at line 147 of file ossimResampler.h.

Referenced by allocateWeightTable(), generateWeightTable(), getResamplerType(), resampleTile(), setCubicParameter(), and setResamplerType().

◆ theTableHeight

ossim_int32 ossimResampler::theTableHeight

protected

Definition at line 151 of file ossimResampler.h.

Referenced by allocateWeightTable(), and deleteWeightTable().

◆ theTableWidthX

ossim_int32 ossimResampler::theTableWidthX

protected

Definition at line 149 of file ossimResampler.h.

Referenced by allocateWeightTable(), generateWeightTable(), resampleFullTile(), resamplePartialTile(), and setRatio().

◆ theTableWidthY

ossim_int32 ossimResampler::theTableWidthY

protected

Definition at line 150 of file ossimResampler.h.

Referenced by allocateWeightTable(), generateWeightTable(), resampleFullTile(), resamplePartialTile(), and setRatio().

◆ theWeightTableX

double** ossimResampler::theWeightTableX

protected

Definition at line 156 of file ossimResampler.h.

Referenced by allocateWeightTable(), deleteWeightTable(), generateWeightTable(), resample(), resampleFullTile(), and resamplePartialTile().

◆ theWeightTableY

double** ossimResampler::theWeightTableY

protected

Definition at line 157 of file ossimResampler.h.

Referenced by allocateWeightTable(), deleteWeightTable(), generateWeightTable(), resample(), resampleFullTile(), and resamplePartialTile().

The documentation for this class was generated from the following files:

Public Types

Public Member Functions

Protected Member Functions

Protected Attributes

Detailed Description

Member Enumeration Documentation

◆ ossimResLevelResamplerType

Constructor & Destructor Documentation

◆ ossimResampler()

◆ ~ossimResampler()

Member Function Documentation

◆ allocateWeightTable()

◆ canConnectMyInputTo()

◆ deleteWeightTable()

◆ generateWeightTable()

◆ getCubicC0()

◆ getCubicC1()

◆ getCubicC2()

◆ getCubicC3()

◆ getCubicParameter()

◆ getKernelHeight()

◆ getKernelWidth()

◆ getRatio()

◆ getResamplerType()

◆ loadState()

◆ resample() [1/3]

◆ resample() [2/3]

◆ resample() [3/3]

◆ resampleFullTile()

◆ resampleNearestNeighbor() [1/2]

◆ resampleNearestNeighbor() [2/2]

◆ resamplePartialTile()

◆ resampleTile() [1/2]

◆ resampleTile() [2/2]

◆ resampleTileNearestNeighbor() [1/2]

◆ resampleTileNearestNeighbor() [2/2]

◆ saveState()

◆ setCubicParameter()

◆ setRatio() [1/2]

◆ setRatio() [2/2]

◆ setResamplerType()

Member Data Documentation

◆ theCubicAdjustableParameter

◆ theKernelHeight

◆ theKernelWidth

◆ theOutputToInputRatio

◆ theResamplerType

◆ theTableHeight

◆ theTableWidthX

◆ theTableWidthY

◆ theWeightTableX

◆ theWeightTableY