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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() (FindMinMax const &v)
 
void operator() (RGBValue< VALUETYPE > 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::inspectImage(srcImageRange(img), minmax);
cout << "Min: " << minmax.min << " Max: " << minmax.max;
Find the minimum and maximum pixel value in an image or ROI.
Definition inspectimage.hxx:1002
VALUETYPE min
Definition inspectimage.hxx:1080
VALUETYPE max
Definition inspectimage.hxx:1084
void inspectImage(...)
Apply read-only functor to every pixel in the image.
BasicImage< UInt8 > BImage
Definition stdimage.hxx:62

Required Interface:

VALUETYPE v1, v2(v1);
v1 < v2;
v1 = v2;

Member Typedef Documentation

◆ argument_type

template<class VALUETYPE>
typedef VALUETYPE argument_type

the functor's argument type

◆ result_type

template<class VALUETYPE>
typedef VALUETYPE result_type

the functor's result type

◆ value_type

template<class VALUETYPE>
typedef VALUETYPE value_type

Constructor & Destructor Documentation

◆ FindMinMax()

template<class VALUETYPE>
FindMinMax ( )

init min and max

Member Function Documentation

◆ reset()

template<class VALUETYPE>
void reset ( )

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

◆ operator()() [1/3]

template<class VALUETYPE>
void operator() ( argument_type const & v)

update min and max

◆ operator()() [2/3]

template<class VALUETYPE>
void operator() ( RGBValue< VALUETYPE > const & v)

update min and max with components of RGBValue<VALUETYPE>

◆ operator()() [3/3]

template<class VALUETYPE>
void operator() ( FindMinMax< VALUETYPE > const & v)

merge two statistics

Member Data Documentation

◆ min

template<class VALUETYPE>
VALUETYPE min

the current min

◆ max

template<class VALUETYPE>
VALUETYPE max

the current max

◆ count

template<class VALUETYPE>
unsigned int count

the number of values processed so far


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

© Ullrich Köthe (ullrich.koethe@iwr.uni-heidelberg.de)
Heidelberg Collaboratory for Image Processing, University of Heidelberg, Germany

html generated using doxygen and Python
vigra 1.12.1 (Thu Feb 27 2025)