cvr::matrixTransform< I >::matrixTransform::helper2x2 Class Reference

Helper for 2x2 matrix transformations. More...

#include <cvrMatrixTransform.h>

Inheritance diagram for cvr::matrixTransform< I >::matrixTransform::helper2x2:

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Collaboration diagram for cvr::matrixTransform< I >::matrixTransform::helper2x2:

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List of all members.

Public Member Functions
	helper2x2 (interpolator_type &interp, const parameters &par)
virtual	~helper2x2 ()
virtual bool	analyzeMatrix ()
virtual bool	apply (const matrix< value_type > &src, matrix< value_type > &dest, fpoint &offset) const
virtual bool	evalDims (const ipoint &orig, ipoint &res, fpoint &offset) const
virtual void	forwards (const fpoint &orig, fpoint &dest, const fpoint &offset) const
virtual void	backwards (const fpoint &dest, fpoint &orig, const fpoint &offset) const

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Detailed Description

template<class I>
class cvr::matrixTransform< I >::helper2x2

Helper for 2x2 matrix transformations.

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Constructor & Destructor Documentation

template<class I>

cvr::matrixTransform< I >::matrixTransform::helper2x2::helper2x2	(	interpolator_type &	interp,
		const parameters &	par
	)

The only available constructor.

template<class I>

virtual cvr::matrixTransform< I >::matrixTransform::helper2x2::~helper2x2

(

)

[virtual]

Virtual destructor.

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Member Function Documentation

template<class I>

virtual bool cvr::matrixTransform< I >::matrixTransform::helper2x2::analyzeMatrix

(

)

[virtual]

Analyze the matrix in the parameters and compute its inverse.

If the matrix is not invertible, then return false.

Implements cvr::matrixTransform< I >::matrixTransform::helperBase.

template<class I>

virtual bool cvr::matrixTransform< I >::matrixTransform::helper2x2::apply	(	const matrix< value_type > &	src,
		matrix< value_type > &	dest,
		fpoint &	offset
	)			const [virtual]

Transform an image according to the matrix provided in the parameters.

Implements cvr::matrixTransform< I >::matrixTransform::helperBase.

template<class I>

virtual void cvr::matrixTransform< I >::matrixTransform::helper2x2::backwards	(	const fpoint &	dest,
		fpoint &	orig,
		const fpoint &	offset
	)			const [virtual]

Inverse transform the given point coordinates.

Warning:

Do not forget to provide first the size of the matrix from which the points are going to be taken, using use(const ipoint&).

This method is the inverse of forwards(const fpoint&,fpoint&). Given a position dest in the transformed system, it computes the coordinates of that point in the original coordinate system.

Parameters:

	dest	Position of a point in the transformed space.
	orig	Position of the point in the original space.
	offset	Position of the origin of the result with respect to the coordinate system of the original image.

Implements cvr::matrixTransform< I >::matrixTransform::helperBase.

template<class I>

virtual bool cvr::matrixTransform< I >::matrixTransform::helper2x2::evalDims	(	const ipoint &	orig,
		ipoint &	res,
		fpoint &	offset
	)			const [virtual]

After the matrix has been analyzed, this method can be used to compute the dimensions of the resulting image and the offset.

Implements cvr::matrixTransform< I >::matrixTransform::helperBase.

template<class I>

virtual void cvr::matrixTransform< I >::matrixTransform::helper2x2::forwards	(	const fpoint &	orig,
		fpoint &	dest,
		const fpoint &	offset
	)			const [virtual]

Transform the given point coordinates.

Warning:

Do not forget to provide first the size of the matrix from which the points are going to be taken, using use(const ipoint&).

This method takes the orig position, assumed to be in a reference system of a matrix/image of the size given by the use(const ipoint&) method, and transforms this position according to the set parameters.

Implements cvr::matrixTransform< I >::matrixTransform::helperBase.

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

• cvrMatrixTransform.h