stira::filter::NonSeparableFilter Class Reference

Filters an image using a non-separable filter kernel. More...

#include <NonSeparableFilter.h>

Public Member Functions
	NonSeparableFilter ()
	Constructor.
	~NonSeparableFilter ()
	Destructor.

Static Public Member Functions
static ArrayGrid< double > *	Run (ArrayGrid< double > *pInput, double *filterKernel, int filterWidth, int filterHeight)
	filters single band in image with 2D non-separable filter kernel More...
static ArrayGrid< double > *	RunSobelX (ArrayGrid< double > *pInput)
	filters single band in image with Sobel X filter kernel More...
static ArrayGrid< double > *	RunSobelY (ArrayGrid< double > *pInput)
	filters single band in image with Sobel Y filter kernel More...
static Image *	RunSobelX (Image *pInput)
	filters single band in image with Sobel X filter kernel More...
static Image *	RunSobelY (Image *pInput)
	filters single band in image with Sobel Y filter kernel More...
static OrientationGrid *	DetermineLocalMagnitudeAndOrientation (ArrayGrid< double > *pGridIn)
	Computes a grid with the local orientation and edge strength based on the Sobel (X and Y direction) filters. More...
static double *	GetSobelXKernel ()
	Creates and returns a sobel filter kernel for x direction. More...
static double *	GetSobelYKernel ()
	Creates and returns a sobel filter kernel for y direction. More...

Detailed Description

Filters an image using a non-separable filter kernel.

Member Function Documentation

OrientationGrid * stira::filter::NonSeparableFilter::DetermineLocalMagnitudeAndOrientation ( ArrayGrid< double > *  pGridIn )

static

Computes a grid with the local orientation and edge strength based on the Sobel (X and Y direction) filters.

Parameters

pGridIn

input image

Returns

grid containing local edge strengths and edge magnitudes

References stira::imagedata::ArrayGrid< T >::GetHeight(), stira::imagedata::ArrayGrid< T >::GetValue(), stira::imagedata::ArrayGrid< T >::GetWidth(), RunSobelX(), RunSobelY(), stira::imagedata::OrientationGrid::SetAngle(), and stira::imagedata::OrientationGrid::SetMagnitude().

Referenced by stira::degradationestimation::CompareSmoothSharpDijk::Run(), stira::imageanalysis::CannyEdgeDetector::Run(), and stira::imageanalysis::WatershedMeyer< T >::~WatershedMeyer().

double * stira::filter::NonSeparableFilter::GetSobelXKernel ( )

static

Creates and returns a sobel filter kernel for x direction.

Warning

caller becomes responsible; clean up after usage!!

Referenced by RunSobelX().

double * stira::filter::NonSeparableFilter::GetSobelYKernel ( )

static

Creates and returns a sobel filter kernel for y direction.

Warning

caller becomes responsible; clean up after usage!!

Referenced by RunSobelY().

ArrayGrid< double > * stira::filter::NonSeparableFilter::Run ( ArrayGrid< double > *  pInput, double *  filterKernel, int  filterWidth, int  filterHeight  )

static

filters single band in image with 2D non-separable filter kernel

Parameters

pInput	input data
filterKernel	filter kernel in lexicographical order (all rows after each other)
filterWidth	width of kernel
filterHeight	height of kernel

Returns

filtered grid

References stira::imagedata::ArrayGrid< T >::Clone(), stira::imagedata::GridExtender< T >::CropBorder(), stira::imagedata::ArrayGrid< T >::GetHeight(), stira::imagedata::ArrayGrid< T >::GetValue(), stira::imagedata::ArrayGrid< T >::GetWidth(), stira::imagedata::GridExtender< T >::MirrorBorder(), and stira::imagedata::ArrayGrid< T >::SetValue().

Referenced by RunSobelX(), and RunSobelY().

ArrayGrid< double > * stira::filter::NonSeparableFilter::RunSobelX ( ArrayGrid< double > *  pInput )

static

filters single band in image with Sobel X filter kernel

Parameters

pInput

input data

Returns

filtered grid

References GetSobelXKernel(), and Run().

Referenced by DetermineLocalMagnitudeAndOrientation(), and RunSobelX().

Image * stira::filter::NonSeparableFilter::RunSobelX ( Image *  pInput )

static

filters single band in image with Sobel X filter kernel

Parameters

pInput

input data

Returns

filtered grid

References stira::imagedata::Image::AddBand(), stira::imagedata::Image::GetBands(), stira::imagedata::Image::GetHeight(), stira::imagedata::Image::GetNumberOfBands(), stira::imagedata::Image::GetWidth(), and RunSobelX().

ArrayGrid< double > * stira::filter::NonSeparableFilter::RunSobelY ( ArrayGrid< double > *  pInput )

static

filters single band in image with Sobel Y filter kernel

Parameters

pInput

input data

Returns

filtered grid

References GetSobelYKernel(), and Run().

Referenced by DetermineLocalMagnitudeAndOrientation(), and RunSobelY().

Image * stira::filter::NonSeparableFilter::RunSobelY ( Image *  pInput )

static

filters single band in image with Sobel Y filter kernel

Parameters

pInput

input data

Returns

filtered grid

References stira::imagedata::Image::AddBand(), stira::imagedata::Image::GetBands(), stira::imagedata::Image::GetHeight(), stira::imagedata::Image::GetNumberOfBands(), stira::imagedata::Image::GetWidth(), and RunSobelY().

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

• filter/filter/NonSeparableFilter.h
• filter/filter/NonSeparableFilter.cpp