FindSum< VALUETYPE > Class Template Reference

Find the sum of the pixel values in an image or ROI. More...

#include <vigra/inspectimage.hxx>

Inherits UnaryReduceFunctorTag.

Public Types
typedef VALUETYPE	argument_type
typedef NumericTraits < VALUETYPE >::Promote	result_type

Public Member Functions
	FindSum ()
void	operator() (argument_type const &v)
void	operator() (FindSum const &v)
result_type	operator() () const
void	reset ()
result_type	sum () const

Detailed Description

template<class VALUETYPE>
class vigra::FindSum< VALUETYPE >

Find the sum of the pixel values in an image or ROI.

This Functor can also be used in conjunction with ArrayOfRegionStatistics to find the sum of all regions in a labeled image, and with the reduce mode of transformMultiArray().

Traits defined:

FunctorTraits::isUnaryAnalyser and FunctorTraits::isInitializer are true (VigraTrueType)

Usage:

#include <vigra/inspectimage.hxx>
Namespace: vigra

vigra::BImage img;

vigra::FindSum<vigra::BImage::PixelType> sum;   // init functor

vigra::inspectImage(srcImageRange(img), sum);

cout << "Sum: " << sum();

Required Interface:

VALUETYPE v1, v2(v1);

v1 += v2;

Member Typedef Documentation

typedef VALUETYPE argument_type

the functor's argument type

typedef NumericTraits<VALUETYPE>::Promote result_type

the functor's result type

Constructor & Destructor Documentation

FindSum

(

)

init sum

Member Function Documentation

void reset

(

)

(re-)init sum

void operator()

(

argument_type const &

v

)

update sum

void operator()

(

FindSum< VALUETYPE > const &

v

)

merge two statistics

result_type sum

(

)

const

return current sum

result_type operator()

(

)

const

return current sum

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

• vigra/inspectimage.hxx