FindMinMax< VALUETYPE > Class Template Reference

Find the minimum and maximum pixel value in an image or ROI. More...

#include <vigra/inspectimage.hxx>

Public Types
typedef VALUETYPE	argument_type
typedef VALUETYPE	result_type
typedef VALUETYPE	value_type

Public Member Functions
	FindMinMax ()
void	operator() (argument_type const &v)
void	operator() (RGBValue< VALUETYPE > const &v)
void	operator() (FindMinMax const &v)
void	reset ()

Public Attributes
unsigned int	count
VALUETYPE	max
VALUETYPE	min

Detailed Description

template<class VALUETYPE>
class vigra::FindMinMax< VALUETYPE >

Find the minimum and maximum pixel value in an image or ROI.

In addition the size of the ROI is calculated. These functors can also be used in conjunction with ArrayOfRegionStatistics to find the extremes of all regions in a labeled image.

Traits defined:

FunctorTraits::isUnaryAnalyser is true (VigraTrueType)

Usage:

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

vigra::BImage img;

vigra::FindMinMax<vigra::BImage::PixelType> minmax;   // init functor

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

cout << "Min: " << minmax.min << " Max: " << minmax.max;

Required Interface:

VALUETYPE v1, v2(v1);

v1 < v2;
v1 = v2;

Member Typedef Documentation

typedef VALUETYPE argument_type

the functor's argument type

typedef VALUETYPE result_type

the functor's result type

typedef VALUETYPE value_type

Deprecated:

use argument_type

Constructor & Destructor Documentation

FindMinMax

(

)

init min and max

Member Function Documentation

void reset

(

)

(re-)init functor (clear min, max)

void operator()

(

argument_type const &

v

)

update min and max

void operator()

(

RGBValue< VALUETYPE > const &

v

)

update min and max with components of RGBValue<VALUETYPE>

void operator()

(

FindMinMax< VALUETYPE > const &

v

)

merge two statistics

Member Data Documentation

VALUETYPE min

the current min

VALUETYPE max

the current max

unsigned int count

the number of values processed so far

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

• vigra/inspectimage.hxx