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/* */
/* Copyright 2003-2007 by Kasim Terzic, Christian-Dennis Rahn */
/* and Ullrich Koethe */
/* */
/* This file is part of the VIGRA computer vision library. */
/* The VIGRA Website is */
/* http://hci.iwr.uni-heidelberg.de/vigra/ */
/* Please direct questions, bug reports, and contributions to */
/* ullrich.koethe@iwr.uni-heidelberg.de or */
/* vigra@informatik.uni-hamburg.de */
/* */
/* Permission is hereby granted, free of charge, to any person */
/* obtaining a copy of this software and associated documentation */
/* files (the "Software"), to deal in the Software without */
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/* copy, modify, merge, publish, distribute, sublicense, and/or */
/* sell copies of the Software, and to permit persons to whom the */
/* Software is furnished to do so, subject to the following */
/* conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the */
/* Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND */
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/************************************************************************/
#ifndef VIGRA_MULTI_MORPHOLOGY_HXX
#define VIGRA_MULTI_MORPHOLOGY_HXX
#include <vector>
#include <cmath>
#include "multi_distance.hxx"
#include "array_vector.hxx"
#include "multi_array.hxx"
#include "accessor.hxx"
#include "numerictraits.hxx"
#include "navigator.hxx"
#include "metaprogramming.hxx"
#include "multi_pointoperators.hxx"
#include "functorexpression.hxx"
namespace vigra
{
namespace detail {
// this class simplifies the design, but more importantly, it makes sure
// that the in-place code doesn't get compiled for boolean arrays
// (were it would never executed anyway -- see the specializations below)
template <class DestType, class TmpType>
struct MultiBinaryMorphologyImpl
{
template <class SrcIterator, class SrcShape, class SrcAccessor,
class DestIterator, class DestAccessor>
static void
exec( SrcIterator s, SrcShape const & shape, SrcAccessor src,
DestIterator d, DestAccessor dest,
double radius, bool dilation)
{
using namespace vigra::functor;
// Allocate a new temporary array if the distances squared wouldn't fit
MultiArray<SrcShape::static_size, TmpType> tmpArray(shape);
separableMultiDistSquared(s, shape, src,
tmpArray.traverser_begin(), typename AccessorTraits<TmpType>::default_accessor(), dilation );
// threshold everything less than radius away from the edge
double radius2 = radius * radius;
DestType foreground = dilation
? NumericTraits<DestType>::zero()
: NumericTraits<DestType>::one(),
background = dilation
? NumericTraits<DestType>::one()
: NumericTraits<DestType>::zero();
transformMultiArray( tmpArray.traverser_begin(), shape, StandardValueAccessor<double>(),
d, dest,
ifThenElse( Arg1() >= Param(radius2),
Param(foreground), Param(background) ) );
}
};
template <class DestType>
struct MultiBinaryMorphologyImpl<DestType, DestType>
{
template <class SrcIterator, class SrcShape, class SrcAccessor,
class DestIterator, class DestAccessor>
static void
exec( SrcIterator s, SrcShape const & shape, SrcAccessor src,
DestIterator d, DestAccessor dest,
double radius, bool dilation)
{
using namespace vigra::functor;
separableMultiDistSquared( s, shape, src, d, dest, dilation );
// threshold everything less than radius away from the edge
DestType radius2 = detail::RequiresExplicitCast<DestType>::cast(radius * radius);
DestType foreground = dilation
? NumericTraits<DestType>::zero()
: NumericTraits<DestType>::one(),
background = dilation
? NumericTraits<DestType>::one()
: NumericTraits<DestType>::zero();
transformMultiArray( d, shape, dest, d, dest,
ifThenElse( Arg1() > Param(radius2),
Param(foreground), Param(background) ) );
}
};
template <>
struct MultiBinaryMorphologyImpl<bool, bool>
{
template <class SrcIterator, class SrcShape, class SrcAccessor,
class DestIterator, class DestAccessor>
static void
exec( SrcIterator s, SrcShape const & shape, SrcAccessor src,
DestIterator d, DestAccessor dest, double radius, bool dilation)
{
vigra_fail("multiBinaryMorphology(): Internal error (this function should never be called).");
}
};
} // namespace detail
/** \addtogroup MultiArrayMorphology Morphological operators for multi-dimensional arrays.
These functions perform morphological operations on an arbitrary
dimensional array that is specified by iterators (compatible to \ref MultiIteratorPage)
and shape objects. It can therefore be applied to a wide range of data structures
(\ref vigra::MultiArrayView, \ref vigra::MultiArray etc.).
*/
//@{
/********************************************************/
/* */
/* multiBinaryErosion */
/* */
/********************************************************/
/** \brief Binary erosion on multi-dimensional arrays.
This function applies a flat circular erosion operator with a given radius. The
operation is isotropic. The input is interpreted as a binary multi-dimensional
array where non-zero pixels represent foreground and zero pixels represent
background. In the output, foreground is always represented by ones
(i.e. NumericTrais<typename DestAccessor::value_type>::one()).
This function may work in-place, which means that <tt>siter == diter</tt> is allowed.
A temporary internal array is only allocated if working on the destination
array directly would cause overflow errors (that is if
<tt> NumericTraits<typename DestAccessor::value_type>::max() < squaredNorm(shape)</tt>,
i.e. the squared length of the image diagonal doesn't fit into the destination type).
<b> Declarations:</b>
pass arbitrary-dimensional array views:
\code
namespace vigra {
template <unsigned int N, class T1, class S1,
class T2, class S2>
void
multiBinaryErosion(MultiArrayView<N, T1, S1> const & source,
MultiArrayView<N, T2, S2> dest,
double radius);
}
\endcode
\deprecatedAPI{multiBinaryErosion}
pass \ref MultiIteratorPage "MultiIterators" and \ref DataAccessors :
\code
namespace vigra {
template <class SrcIterator, class SrcShape, class SrcAccessor,
class DestIterator, class DestAccessor>
void
multiBinaryErosion(SrcIterator siter, SrcShape const & shape, SrcAccessor src,
DestIterator diter, DestAccessor dest, int radius);
}
\endcode
use argument objects in conjunction with \ref ArgumentObjectFactories :
\code
namespace vigra {
template <class SrcIterator, class SrcShape, class SrcAccessor,
class DestIterator, class DestAccessor>
void
multiBinaryErosion(triple<SrcIterator, SrcShape, SrcAccessor> const & source,
pair<DestIterator, DestAccessor> const & dest,
int radius);
}
\endcode
\deprecatedEnd
<b> Usage:</b>
<b>\#include</b> \<vigra/multi_morphology.hxx\><br/>
Namespace: vigra
\code
Shape3 shape(width, height, depth);
MultiArray<3, unsigned char> source(shape);
MultiArray<3, unsigned char> dest(shape);
...
// perform isotropic binary erosion
multiBinaryErosion(source, dest, 3);
\endcode
\see vigra::discErosion(), vigra::multiGrayscaleErosion()
*/
doxygen_overloaded_function(template <...> void multiBinaryErosion)
template <class SrcIterator, class SrcShape, class SrcAccessor,
class DestIterator, class DestAccessor>
void
multiBinaryErosion( SrcIterator s, SrcShape const & shape, SrcAccessor src,
DestIterator d, DestAccessor dest, double radius)
{
typedef typename DestAccessor::value_type DestType;
typedef Int32 TmpType;
double dmax = squaredNorm(shape);
// Get the distance squared transform of the image
if(dmax > NumericTraits<DestType>::toRealPromote(NumericTraits<DestType>::max()))
{
detail::MultiBinaryMorphologyImpl<DestType, TmpType>::exec(s, shape, src, d, dest, radius, false);
}
else // work directly on the destination array
{
detail::MultiBinaryMorphologyImpl<DestType, DestType>::exec(s, shape, src, d, dest, radius, false);
}
}
template <class SrcIterator, class SrcShape, class SrcAccessor,
class DestIterator, class DestAccessor>
inline void
multiBinaryErosion(triple<SrcIterator, SrcShape, SrcAccessor> const & source,
pair<DestIterator, DestAccessor> const & dest, double radius)
{
multiBinaryErosion( source.first, source.second, source.third,
dest.first, dest.second, radius );
}
template <unsigned int N, class T1, class S1,
class T2, class S2>
inline void
multiBinaryErosion(MultiArrayView<N, T1, S1> const & source,
MultiArrayView<N, T2, S2> dest,
double radius)
{
vigra_precondition(source.shape() == dest.shape(),
"multiBinaryErosion(): shape mismatch between input and output.");
multiBinaryErosion( srcMultiArrayRange(source),
destMultiArray(dest), radius );
}
/********************************************************/
/* */
/* multiBinaryDilation */
/* */
/********************************************************/
/** \brief Binary dilation on multi-dimensional arrays.
This function applies a flat circular dilation operator with a given radius. The
operation is isotropic. The input is interpreted as a binary multi-dimensional
array where non-zero pixels represent foreground and zero pixels represent
background. In the output, foreground is always represented by ones
(i.e. NumericTrais<typename DestAccessor::value_type>::one()).
This function may work in-place, which means that <tt>siter == diter</tt> is allowed.
A temporary internal array is only allocated if working on the destination
array directly would cause overflow errors (that is if
<tt> NumericTraits<typename DestAccessor::value_type>::max() < squaredNorm(shape)</tt>,
i.e. the squared length of the image diagonal doesn't fit into the destination type).
<b> Declarations:</b>
pass arbitrary-dimensional array views:
\code
namespace vigra {
template <unsigned int N, class T1, class S1,
class T2, class S2>
void
multiBinaryDilation(MultiArrayView<N, T1, S1> const & source,
MultiArrayView<N, T2, S2> dest,
double radius);
}
\endcode
\deprecatedAPI{multiBinaryDilation}
pass \ref MultiIteratorPage "MultiIterators" and \ref DataAccessors :
\code
namespace vigra {
template <class SrcIterator, class SrcShape, class SrcAccessor,
class DestIterator, class DestAccessor>
void
multiBinaryDilation(SrcIterator siter, SrcShape const & shape, SrcAccessor src,
DestIterator diter, DestAccessor dest, int radius);
}
\endcode
use argument objects in conjunction with \ref ArgumentObjectFactories :
\code
namespace vigra {
template <class SrcIterator, class SrcShape, class SrcAccessor,
class DestIterator, class DestAccessor>
void
multiBinaryDilation(triple<SrcIterator, SrcShape, SrcAccessor> const & source,
pair<DestIterator, DestAccessor> const & dest,
int radius);
}
\endcode
\deprecatedEnd
<b> Usage:</b>
<b>\#include</b> \<vigra/multi_morphology.hxx\><br/>
Namespace: vigra
\code
Shape3 shape(width, height, depth);
MultiArray<3, unsigned char> source(shape);
MultiArray<3, unsigned char> dest(shape);
...
// perform isotropic binary erosion
multiBinaryDilation(source, dest, 3);
\endcode
\see vigra::discDilation(), vigra::multiGrayscaleDilation()
*/
doxygen_overloaded_function(template <...> void multiBinaryDilation)
template <class SrcIterator, class SrcShape, class SrcAccessor,
class DestIterator, class DestAccessor>
void
multiBinaryDilation( SrcIterator s, SrcShape const & shape, SrcAccessor src,
DestIterator d, DestAccessor dest, double radius)
{
typedef typename DestAccessor::value_type DestType;
typedef Int32 TmpType;
double dmax = squaredNorm(shape);
// Get the distance squared transform of the image
if(dmax > NumericTraits<DestType>::toRealPromote(NumericTraits<DestType>::max()))
{
detail::MultiBinaryMorphologyImpl<DestType, TmpType>::exec(s, shape, src, d, dest, radius, true);
}
else // work directly on the destination array
{
detail::MultiBinaryMorphologyImpl<DestType, DestType>::exec(s, shape, src, d, dest, radius, true);
}
}
template <class SrcIterator, class SrcShape, class SrcAccessor,
class DestIterator, class DestAccessor>
inline void
multiBinaryDilation(triple<SrcIterator, SrcShape, SrcAccessor> const & source,
pair<DestIterator, DestAccessor> const & dest, double radius)
{
multiBinaryDilation( source.first, source.second, source.third,
dest.first, dest.second, radius );
}
template <unsigned int N, class T1, class S1,
class T2, class S2>
inline void
multiBinaryDilation(MultiArrayView<N, T1, S1> const & source,
MultiArrayView<N, T2, S2> dest,
double radius)
{
vigra_precondition(source.shape() == dest.shape(),
"multiBinaryDilation(): shape mismatch between input and output.");
multiBinaryDilation( srcMultiArrayRange(source),
destMultiArray(dest), radius );
}
/********************************************************/
/* */
/* multiGrayscaleErosion */
/* */
/********************************************************/
/** \brief Parabolic grayscale erosion on multi-dimensional arrays.
This function applies a parabolic erosion operator with a given spread (sigma) on
a grayscale array. The operation is isotropic.
The input is a grayscale multi-dimensional array.
This function may work in-place, which means that <tt>siter == diter</tt> is allowed.
A full-sized internal array is only allocated if working on the destination
array directly would cause overflow errors (i.e. if
<tt> typeid(typename DestAccessor::value_type) < N * M*M</tt>, where M is the
size of the largest dimension of the array.
<b> Declarations:</b>
pass arbitrary-dimensional array views:
\code
namespace vigra {
template <unsigned int N, class T1, class S1,
class T2, class S2>
void
multiGrayscaleErosion(MultiArrayView<N, T1, S1> const & source,
MultiArrayView<N, T2, S2> dest,
double sigma);
}
\endcode
\deprecatedAPI{multiGrayscaleErosion}
pass \ref MultiIteratorPage "MultiIterators" and \ref DataAccessors :
\code
namespace vigra {
template <class SrcIterator, class SrcShape, class SrcAccessor,
class DestIterator, class DestAccessor>
void
multiGrayscaleErosion(SrcIterator siter, SrcShape const & shape, SrcAccessor src,
DestIterator diter, DestAccessor dest, double sigma);
}
\endcode
use argument objects in conjunction with \ref ArgumentObjectFactories :
\code
namespace vigra {
template <class SrcIterator, class SrcShape, class SrcAccessor,
class DestIterator, class DestAccessor>
void
multiGrayscaleErosion(triple<SrcIterator, SrcShape, SrcAccessor> const & source,
pair<DestIterator, DestAccessor> const & dest,
double sigma);
}
\endcode
\deprecatedEnd
<b> Usage:</b>
<b>\#include</b> \<vigra/multi_morphology.hxx\><br/>
Namespace: vigra
\code
Shape3 shape(width, height, depth);
MultiArray<3, unsigned char> source(shape);
MultiArray<3, unsigned char> dest(shape);
...
// perform isotropic grayscale erosion
multiGrayscaleErosion(source, dest, 3.0);
\endcode
\see vigra::discErosion(), vigra::multiBinaryErosion()
*/
doxygen_overloaded_function(template <...> void multiGrayscaleErosion)
template <class SrcIterator, class SrcShape, class SrcAccessor,
class DestIterator, class DestAccessor>
void
multiGrayscaleErosion( SrcIterator s, SrcShape const & shape, SrcAccessor src,
DestIterator d, DestAccessor dest, double sigma)
{
typedef typename NumericTraits<typename DestAccessor::value_type>::ValueType DestType;
typedef typename NumericTraits<typename DestAccessor::value_type>::Promote TmpType;
DestType MaxValue = NumericTraits<DestType>::max();
enum { N = 1 + SrcIterator::level };
// temporary array to hold the current line to enable in-place operation
ArrayVector<TmpType> tmp( shape[0] );
int MaxDim = 0;
for( int i=0; i<N; i++)
if(MaxDim < shape[i]) MaxDim = shape[i];
using namespace vigra::functor;
ArrayVector<double> sigmas(shape.size(), sigma);
// Allocate a new temporary array if the distances squared wouldn't fit
if(N*MaxDim*MaxDim > MaxValue)
{
MultiArray<SrcShape::static_size, TmpType> tmpArray(shape);
detail::internalSeparableMultiArrayDistTmp( s, shape, src, tmpArray.traverser_begin(),
typename AccessorTraits<TmpType>::default_accessor(), sigmas );
transformMultiArray( tmpArray.traverser_begin(), shape,
typename AccessorTraits<TmpType>::default_accessor(), d, dest,
ifThenElse( Arg1() > Param(MaxValue), Param(MaxValue), Arg1() ) );
//copyMultiArray( tmpArray.traverser_begin(), shape,
// typename AccessorTraits<TmpType>::default_accessor(), d, dest );
}
else
{
detail::internalSeparableMultiArrayDistTmp( s, shape, src, d, dest, sigmas );
}
}
template <class SrcIterator, class SrcShape, class SrcAccessor,
class DestIterator, class DestAccessor>
inline void
multiGrayscaleErosion(triple<SrcIterator, SrcShape, SrcAccessor> const & source,
pair<DestIterator, DestAccessor> const & dest, double sigma)
{
multiGrayscaleErosion( source.first, source.second, source.third,
dest.first, dest.second, sigma);
}
template <unsigned int N, class T1, class S1,
class T2, class S2>
inline void
multiGrayscaleErosion(MultiArrayView<N, T1, S1> const & source,
MultiArrayView<N, T2, S2> dest,
double sigma)
{
vigra_precondition(source.shape() == dest.shape(),
"multiGrayscaleErosion(): shape mismatch between input and output.");
multiGrayscaleErosion( srcMultiArrayRange(source),
destMultiArray(dest), sigma);
}
/********************************************************/
/* */
/* multiGrayscaleDilation */
/* */
/********************************************************/
/** \brief Parabolic grayscale dilation on multi-dimensional arrays.
This function applies a parabolic dilation operator with a given spread (sigma) on
a grayscale array. The operation is isotropic.
The input is a grayscale multi-dimensional array.
This function may work in-place, which means that <tt>siter == diter</tt> is allowed.
A full-sized internal array is only allocated if working on the destination
array directly would cause overflow errors (i.e. if
<tt> typeid(typename DestAccessor::value_type) < N * M*M</tt>, where M is the
size of the largest dimension of the array.
<b> Declarations:</b>
pass arbitrary-dimensional array views:
\code
namespace vigra {
template <unsigned int N, class T1, class S1,
class T2, class S2>
void
multiGrayscaleDilation(MultiArrayView<N, T1, S1> const & source,
MultiArrayView<N, T2, S2> dest,
double sigma);
}
\endcode
\deprecatedAPI{multiGrayscaleDilation}
pass \ref MultiIteratorPage "MultiIterators" and \ref DataAccessors :
\code
namespace vigra {
template <class SrcIterator, class SrcShape, class SrcAccessor,
class DestIterator, class DestAccessor>
void
multiGrayscaleDilation(SrcIterator siter, SrcShape const & shape, SrcAccessor src,
DestIterator diter, DestAccessor dest, double sigma);
}
\endcode
use argument objects in conjunction with \ref ArgumentObjectFactories :
\code
namespace vigra {
template <class SrcIterator, class SrcShape, class SrcAccessor,
class DestIterator, class DestAccessor>
void
multiGrayscaleDilation(triple<SrcIterator, SrcShape, SrcAccessor> const & source,
pair<DestIterator, DestAccessor> const & dest,
double sigma);
}
\endcode
\deprecatedEnd
<b> Usage:</b>
<b>\#include</b> \<vigra/multi_morphology.hxx\><br/>
Namespace: vigra
\code
Shape3 shape(width, height, depth);
MultiArray<3, unsigned char> source(shape);
MultiArray<3, unsigned char> dest(shape);
...
// perform isotropic grayscale erosion
multiGrayscaleDilation(source, dest, 3.0);
\endcode
\see vigra::discDilation(), vigra::multiBinaryDilation()
*/
doxygen_overloaded_function(template <...> void multiGrayscaleDilation)
template <class SrcIterator, class SrcShape, class SrcAccessor,
class DestIterator, class DestAccessor>
void multiGrayscaleDilation( SrcIterator s, SrcShape const & shape, SrcAccessor src,
DestIterator d, DestAccessor dest, double sigma)
{
typedef typename NumericTraits<typename DestAccessor::value_type>::ValueType DestType;
typedef typename NumericTraits<typename DestAccessor::value_type>::Promote TmpType;
DestType MinValue = NumericTraits<DestType>::min();
DestType MaxValue = NumericTraits<DestType>::max();
enum { N = 1 + SrcIterator::level };
// temporary array to hold the current line to enable in-place operation
ArrayVector<TmpType> tmp( shape[0] );
int MaxDim = 0;
for( int i=0; i<N; i++)
if(MaxDim < shape[i]) MaxDim = shape[i];
using namespace vigra::functor;
ArrayVector<double> sigmas(shape.size(), sigma);
// Allocate a new temporary array if the distances squared wouldn't fit
if(-N*MaxDim*MaxDim < MinValue || N*MaxDim*MaxDim > MaxValue)
{
MultiArray<SrcShape::static_size, TmpType> tmpArray(shape);
detail::internalSeparableMultiArrayDistTmp( s, shape, src, tmpArray.traverser_begin(),
typename AccessorTraits<TmpType>::default_accessor(), sigmas, true );
transformMultiArray( tmpArray.traverser_begin(), shape,
typename AccessorTraits<TmpType>::default_accessor(), d, dest,
ifThenElse( Arg1() > Param(MaxValue), Param(MaxValue),
ifThenElse( Arg1() < Param(MinValue), Param(MinValue), Arg1() ) ) );
}
else
{
detail::internalSeparableMultiArrayDistTmp( s, shape, src, d, dest, sigmas, true );
}
}
template <class SrcIterator, class SrcShape, class SrcAccessor,
class DestIterator, class DestAccessor>
inline void
multiGrayscaleDilation(triple<SrcIterator, SrcShape, SrcAccessor> const & source,
pair<DestIterator, DestAccessor> const & dest, double sigma)
{
multiGrayscaleDilation( source.first, source.second, source.third,
dest.first, dest.second, sigma);
}
template <unsigned int N, class T1, class S1,
class T2, class S2>
inline void
multiGrayscaleDilation(MultiArrayView<N, T1, S1> const & source,
MultiArrayView<N, T2, S2> dest,
double sigma)
{
vigra_precondition(source.shape() == dest.shape(),
"multiGrayscaleDilation(): shape mismatch between input and output.");
multiGrayscaleDilation( srcMultiArrayRange(source),
destMultiArray(dest), sigma);
}
//@}
} //-- namespace vigra
#endif //-- VIGRA_MULTI_MORPHOLOGY_HXX
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