A class with operations to perform on a regular grid. More...

#include <ArrayGridTools.h>

Public Member Functions
	ArrayGridTools ()
	constructor

	~ArrayGridTools ()
	destructor

Static Public Member Functions
static ArrayGrid< T > *	DownSampleGrid (ArrayGrid< T > *pGridIn)
	downsamples this grid (no interpolation is performed) More...

static ArrayGrid< T > *	UpSampleGrid (ArrayGrid< T > *pGridIn, int upSampledWidth, int upSampledHeight, double myFactor=4.0)
	Upsamples a band (no interpolation: newly inserted pixels are black) More...

static ArrayGrid< T > *	CreateGridFromArray (T *pArray, int width, int height)
	Creates a grid object from an array. More...

static T *	CreateArrayFromGrid (ArrayGrid< T > *pGridIn)
	Creates a array from grid object. More...

static ArrayGrid< T > *	ExtractSubGrid (ArrayGrid< T > *pGridIn, int xTop, int yTop, int xBottom, int yBottom)
	Creates a subgrid from a grid. More...

static void	InsertSubGrid (ArrayGrid< T > pMasterGrid, ArrayGrid< T > pSubGrid, int xTop, int yTop, int xBottom, int yBottom)
	Copies values from a subgrid in a larger grid. More...

static ArrayGrid< T > *	CircularShiftGrid (ArrayGrid< T > *pGridIn, int deltaX, int deltaY)
	Creates copy of image which is circularly shifted.

Detailed Description

template<class T>
class stira::imagedata::ArrayGridTools< T >

A class with operations to perform on a regular grid.

Member Function Documentation

template<class T >

T * stira::imagedata::ArrayGridTools< T >::CreateArrayFromGrid ( ArrayGrid< T > * pGridIn )

inlinestatic

Creates a array from grid object.

Parameters

pGridIn grid with source values

References stira::imagedata::ArrayGrid< T >::GetHeight(), stira::imagedata::ArrayGrid< T >::GetValue(), and stira::imagedata::ArrayGrid< T >::GetWidth().

template<class T >

ArrayGrid< T > * stira::imagedata::ArrayGridTools< T >::CreateGridFromArray	(	T *	pArray,
		int	width,
		int	height
	)

inlinestatic

Creates a grid object from an array.

Parameters

pArray	array with source values
width	width fo the source data
height	height of the source data

References stira::imagedata::ArrayGrid< T >::SetValue().

template<class T >

ArrayGrid< T > * stira::imagedata::ArrayGridTools< T >::DownSampleGrid ( ArrayGrid< T > * pGridIn )

inlinestatic

downsamples this grid (no interpolation is performed)

The reason that there is no interpolation before subsampling is that smoothing is already performed in most pyramid decomposition schemes. The caller gets a newly created grid, that becomes his responsible to delete

Parameters

pGridIn the input grid (is left untouched)

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

Referenced by stira::steerable::PyramidComplex::Decompose(), stira::steerable::PyramidReal::Decompose(), and stira::steerable::PyramidBurtAdelson::GetPyramid().

template<class T >

ArrayGrid< T > * stira::imagedata::ArrayGridTools< T >::ExtractSubGrid	(	ArrayGrid< T > *	pGridIn,
		int	xTop,
		int	yTop,
		int	xBottom,
		int	yBottom
	)

inlinestatic

Creates a subgrid from a grid.

Parameters

pGridIn	grid to extract subgrid from
xTop	x coordinate of top left point in master grid to start extraction of subgrid (included in subgrid!)
yTop	y coordinate of top left point in master grid to start extraction of subgrid (included in subgrid!)
xBottom	x coordinate of bottom right point in master grid to stop extraction of subgrid (NOT included in subgrid!)
yBottom	y coordinate of bottom right point in master grid to stop extraction of subgrid (NOT included in subgrid!)

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

Referenced by stira::wavelet::SubsampledTransform::Decompose().

template<class T >

void stira::imagedata::ArrayGridTools< T >::InsertSubGrid	(	ArrayGrid< T > *	pMasterGrid,
		ArrayGrid< T > *	pSubGrid,
		int	xTop,
		int	yTop,
		int	xBottom,
		int	yBottom
	)

inlinestatic

Copies values from a subgrid in a larger grid.

Parameters

pMasterGrid	grid to write subgrid values to
pSubGrid	grid to extract subgrid from
xTop	x coordinate of top left point in master grid to start extraction of subgrid (included in subgrid!)
yTop	y coordinate of top left point in master grid to start extraction of subgrid (included in subgrid!)
xBottom	x coordinate of bottom right point in master grid to stop extraction of subgrid (NOT included in subgrid!)
yBottom	y coordinate of bottom right point in master grid to stop extraction of subgrid (NOT included in subgrid!)

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

Referenced by stira::wavelet::SubsampledTransform::Decompose().

template<class T >

ArrayGrid< T > * stira::imagedata::ArrayGridTools< T >::UpSampleGrid	(	ArrayGrid< T > *	pGridIn,
		int	upSampledWidth,
		int	upSampledHeight,
		double	myFactor = `4.0`
	)

inlinestatic

Upsamples a band (no interpolation: newly inserted pixels are black)

The reason that there is no interpolation before subsampling is that smoothing (or interpolation) is performed directly after this method in most pyramid decomposition schemes. The caller gets a newly created band, and is responsible for deleting it after usage. Because of the ambiguity (both width 2n-1 and 2n were downsampled to new width n), the upsampled width and height need to be specified.

This method creates and returns a new object, that is the responsability of the caller to delete

Parameters

pGridIn	the input grid (is left untouched)
upSampledWidth	width of destination upsampled image
upSampledHeight	height of destination upsampled image
myFactor	factor with which all values in the grid are multiplied

References stira::imagedata::ArrayGrid< T >::GetHeight(), stira::imagedata::ArrayGrid< T >::GetValue(), stira::imagedata::ArrayGrid< T >::GetWidth(), stira::imagedata::ArrayGrid< T >::SetGridValues(), and stira::imagedata::ArrayGrid< T >::SetValue().

Referenced by stira::steerable::PyramidBurtAdelson::Decompose(), stira::steerable::PyramidBurtAdelson::GetPyramid(), stira::steerable::PyramidComplex::Reconstruct(), and stira::steerable::PyramidReal::Reconstruct().

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

imagedata/simpletools/ArrayGridTools.h

Public Member Functions

Static Public Member Functions

Detailed Description

template<class T> class stira::imagedata::ArrayGridTools< T >

Member Function Documentation

template<class T>
class stira::imagedata::ArrayGridTools< T >