vigra_ext::SplitVector2Accessor< Iter1, Acc1, Iter2, Acc2 > Class Template Reference

define a write only accessor for a virtual Image<TinyVector<Acc1::value_type>, 2> image, which actually consists of two Images. More...

#include <FunctorAccessor.h>

Public Types
typedef vigra::TinyVector< typename Acc1::value_type, 2 >	value_type
	the vector's value_type
typedef value_type::value_type	component_type

Public Member Functions
	SplitVector2Accessor (Iter1 i1, Acc1 a1, Iter2 i2, Acc2 a2)
	Construct from two image iterators and associated accessors.
template<class V , class ITERATOR >
void	setComponent (V const &value, ITERATOR const &i, int idx) const
	scalar & scalar image
template<class ITERATOR >
unsigned int	size (ITERATOR const &i) const
	return the size (Number of Bands)

Public Attributes
Iter1	i1_
Acc1	a1_
Iter2	i2_
Acc2	a2_

Detailed Description

template<class Iter1, class Acc1, class Iter2, class Acc2>
class vigra_ext::SplitVector2Accessor< Iter1, Acc1, Iter2, Acc2 >

define a write only accessor for a virtual Image<TinyVector<Acc1::value_type>, 2> image, which actually consists of two Images.

Useful to split an image into gray and alpha images while loading, like it is shown in the following example:

vigra::ImageImportInfo info(argv[1]);
 
if(info.numBands() == 2 && info.numExtraBands() == 1)
{
    vigra::BImage image;
    vigra::BImage mask;
    image.resize(info.width(), info.height());
    mask.resize(info.width(), info.height());
 
    // construct special reading accessor, to split
    // the image into two images while reading
    vigra_ext::SplitVector2Accessor<BImage::Iterator,
                                BImage::Accessor,
                                    BImage::Iterator,
                                BImage::Accessor>
    splitA(image.upperLeft(), image.accessor(),
           mask.upperLeft(), mask.accessor());
 
    importImage(info, Diff2D(), splitA );

Definition at line 146 of file FunctorAccessor.h.

Member Typedef Documentation

component_type

template<class Iter1 , class Acc1 , class Iter2 , class Acc2 >

typedef value_type::value_type vigra_ext::SplitVector2Accessor< Iter1, Acc1, Iter2, Acc2 >::component_type

Definition at line 152 of file FunctorAccessor.h.

value_type

template<class Iter1 , class Acc1 , class Iter2 , class Acc2 >

typedef vigra::TinyVector<typename Acc1::value_type, 2> vigra_ext::SplitVector2Accessor< Iter1, Acc1, Iter2, Acc2 >::value_type

the vector's value_type

Definition at line 151 of file FunctorAccessor.h.

Constructor & Destructor Documentation

SplitVector2Accessor()

template<class Iter1 , class Acc1 , class Iter2 , class Acc2 >

vigra_ext::SplitVector2Accessor< Iter1, Acc1, Iter2, Acc2 >::SplitVector2Accessor ( Iter1  i1, Acc1  a1, Iter2  i2, Acc2  a2  )

inline

Construct from two image iterators and associated accessors.

Definition at line 156 of file FunctorAccessor.h.

Member Function Documentation

setComponent()

template<class Iter1 , class Acc1 , class Iter2 , class Acc2 >

template<class V , class ITERATOR >

void vigra_ext::SplitVector2Accessor< Iter1, Acc1, Iter2, Acc2 >::setComponent ( V const &  value, ITERATOR const &  i, int  idx  ) const

inline

scalar & scalar image

Definition at line 162 of file FunctorAccessor.h.

References vigra_ext::SplitVector2Accessor< Iter1, Acc1, Iter2, Acc2 >::a1_, vigra_ext::SplitVector2Accessor< Iter1, Acc1, Iter2, Acc2 >::a2_, vigra_ext::SplitVector2Accessor< Iter1, Acc1, Iter2, Acc2 >::i1_, vigra_ext::SplitVector2Accessor< Iter1, Acc1, Iter2, Acc2 >::i2_, and threshold().

size()

template<class Iter1 , class Acc1 , class Iter2 , class Acc2 >

template<class ITERATOR >

unsigned int vigra_ext::SplitVector2Accessor< Iter1, Acc1, Iter2, Acc2 >::size ( ITERATOR const &  i ) const

inline

return the size (Number of Bands)

Definition at line 178 of file FunctorAccessor.h.

Member Data Documentation

a1_

template<class Iter1 , class Acc1 , class Iter2 , class Acc2 >

Acc1 vigra_ext::SplitVector2Accessor< Iter1, Acc1, Iter2, Acc2 >::a1_

Definition at line 184 of file FunctorAccessor.h.

Referenced by vigra_ext::SplitVector2Accessor< Iter1, Acc1, Iter2, Acc2 >::setComponent().

a2_

template<class Iter1 , class Acc1 , class Iter2 , class Acc2 >

Acc2 vigra_ext::SplitVector2Accessor< Iter1, Acc1, Iter2, Acc2 >::a2_

Definition at line 186 of file FunctorAccessor.h.

Referenced by vigra_ext::SplitVector2Accessor< Iter1, Acc1, Iter2, Acc2 >::setComponent().

i1_

template<class Iter1 , class Acc1 , class Iter2 , class Acc2 >

Iter1 vigra_ext::SplitVector2Accessor< Iter1, Acc1, Iter2, Acc2 >::i1_

Definition at line 183 of file FunctorAccessor.h.

Referenced by vigra_ext::SplitVector2Accessor< Iter1, Acc1, Iter2, Acc2 >::setComponent().

i2_

template<class Iter1 , class Acc1 , class Iter2 , class Acc2 >

Iter2 vigra_ext::SplitVector2Accessor< Iter1, Acc1, Iter2, Acc2 >::i2_

Definition at line 185 of file FunctorAccessor.h.

Referenced by vigra_ext::SplitVector2Accessor< Iter1, Acc1, Iter2, Acc2 >::setComponent().

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

• hugin_base/vigra_ext/FunctorAccessor.h