mitsuba::Resampler< Scalar > Struct Template Reference

Utility class for efficiently resampling discrete datasets to different resolutions. More...

#include <mitsuba/core/rfilter.h>

Public Member Functions
	Resampler (const ReconstructionFilter *rfilter, ReconstructionFilter::EBoundaryCondition bc, int sourceRes, int targetRes)
	Create a new Resampler object that transforms between the specified resolutions. More...
	~Resampler ()
	Release all memory. More...
void	resampleAndClamp (const Scalar *source, size_t sourceStride, Scalar *target, size_t targetStride, int channels, Scalar min=(Scalar) 0, Scalar max=(Scalar) 1)
	Resample a multi-channel array and clamp the results to a specified valid range. More...
void	resample (const Scalar *source, size_t sourceStride, Scalar *target, size_t targetStride, int channels)
	Resample a multi-channel array. More...

Detailed Description

template<typename Scalar>
struct mitsuba::Resampler< Scalar >

Utility class for efficiently resampling discrete datasets to different resolutions.

Template Parameters

Scalar

Denotes the underlying floating point data type (i.e. half, float, or double)

Constructor & Destructor Documentation

template<typename Scalar >

mitsuba::Resampler< Scalar >::Resampler ( const ReconstructionFilter *  rfilter, ReconstructionFilter::EBoundaryCondition  bc, int  sourceRes, int  targetRes  )

inline

Create a new Resampler object that transforms between the specified resolutions.

This constructor precomputes all information needed to efficiently perform the desired resampling operation. For that reason, it is most efficient if it can be used over and over again (e.g. to resample the equal-sized rows of a bitmap)

Parameters

sourceRes	Source resolution
targetRes	Desired target resolution
bc	Boundary conditions that should be observed when looking up samples outside of the defined input domain.

template<typename Scalar >

mitsuba::Resampler< Scalar >::~Resampler ( )

inline

Release all memory.

Member Function Documentation

template<typename Scalar >

void mitsuba::Resampler< Scalar >::resample ( const Scalar *  source, size_t  sourceStride, Scalar *  target, size_t  targetStride, int  channels  )

inline

Resample a multi-channel array.

Parameters

source	Source array of samples
target	Target array of samples
sourceStride	Stride of samples in the source array. A value of '1' implies that they are densely packed.
targetStride	Stride of samples in the source array. A value of '1' implies that they are densely packed.
channels	Number of channels to be resampled

template<typename Scalar >

void mitsuba::Resampler< Scalar >::resampleAndClamp ( const Scalar *  source, size_t  sourceStride, Scalar *  target, size_t  targetStride, int  channels, Scalar  min = (Scalar) 0, Scalar  max = (Scalar) 1  )

inline

Resample a multi-channel array and clamp the results to a specified valid range.

This function is preferred if too large positive/negative values due to ringing are unacceptable.

Parameters

source	Source array of samples
target	Target array of samples
sourceStride	Stride of samples in the source array. A value of '1' implies that they are densely packed.
targetStride	Stride of samples in the source array. A value of '1' implies that they are densely packed.
channels	Number of channels to be resampled
min	Minumum sample value after resampling
max	Maximum sample value after resampling

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The documentation for this struct was generated from the following file:

• include/mitsuba/core/rfilter.h