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Threshold< SrcValueType, DestValueType > Class Template Reference

Threshold an image. More...

#include <vigra/transformimage.hxx>

Public Types

typedef SrcValueType argument_type
 
typedef DestValueType result_type
 

Public Member Functions

result_type operator() (argument_type s) const
 
 Threshold (argument_type lower, argument_type higher, result_type noresult, result_type yesresult)
 

Detailed Description

template<class SrcValueType, class DestValueType>
class vigra::Threshold< SrcValueType, DestValueType >

Threshold an image.

Note: Nowadays, it is probably easier to perform thresholding by means of C++ 11 lambda functions or array expressions.

If a source pixel is above or equal the lower and below or equal the higher threshold (i.e. within the closed interval [lower, higher]) the destination pixel is set to 'yesresult', otherwise to 'noresult'.

Traits defined:

FunctorTraits::isUnaryFunctor is true (VigraTrueType)

Usage:

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

vigra::BImage src(width, height), dest(width, height);
...
vigra::transformImage(src.upperLeft(), src.lowerRight(), src.accessor(),
dest.upperLeft(), dest.accessor(),
vigra::BImage::PixelType, vigra::BImage::PixelType>(10, 100, 0, 255));
Class for a single RGB value.
Definition rgbvalue.hxx:128
Threshold an image.
Definition transformimage.hxx:984

Required Interface:

Member Typedef Documentation

◆ argument_type

the functor's argument type

◆ result_type

the functor's result type

Constructor & Destructor Documentation

◆ Threshold()

Threshold ( argument_type  lower,
argument_type  higher,
result_type  noresult,
result_type  yesresult 
)

init thresholds and return values

Member Function Documentation

◆ operator()()

calculate transform


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