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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile: itkAdaptImageFilterTest.cxx,v $
Language: C++
Date: $Date: 2006-01-15 04:28:36 $
Version: $Revision: 1.10 $
Copyright (c) Insight Software Consortium. All rights reserved.
See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notices for more information.
=========================================================================*/
#if defined(_MSC_VER)
#pragma warning ( disable : 4786 )
#endif
/**
*
* This program illustrates the AdaptImageFilter
*
* The example shows how an Accessor can be used to
* convert an RGBPixel image to an image that has
* just the red component.
*
* That will allow to pass the red component of this
* image as input any filter that expects
* a float image
*
*/
#include <itkAdaptImageFilter.h>
#include <itkImageRegionIteratorWithIndex.h>
#include <itkRGBPixel.h>
#include <itkRedPixelAccessor.h>
#include <itkGreenPixelAccessor.h>
#include <itkBluePixelAccessor.h>
#include "itkFilterWatcher.h"
#include <vnl/vnl_sample.h>
//-------------------------------------
// Typedefs for convenience
//-------------------------------------
typedef itk::Image< itk::RGBPixel<float>, 2 > myRGBImageType;
typedef itk::ImageRegionIteratorWithIndex< myRGBImageType > myRGBIteratorType;
typedef itk::RedPixelAccessor<float> myRedAccessorType;
typedef itk::GreenPixelAccessor<float> myGreenAccessorType;
typedef itk::BluePixelAccessor<float> myBlueAccessorType;
typedef itk::Image< float, 2 > myImageType;
typedef itk::ImageRegionIteratorWithIndex< myImageType > myIteratorType;
//-------------------------
//
// Main code
//
//-------------------------
int itkAdaptImageFilterTest(int, char* [] ) {
myRGBImageType::SizeType size;
size[0] = 2;
size[1] = 2;
myRGBImageType::IndexType index;
index[0] = 0;
index[1] = 0;
myRGBImageType::RegionType region;
region.SetIndex( index );
region.SetSize( size );
myRGBImageType::Pointer myImage = myRGBImageType::New();
myImage->SetRegions( region );
myImage->Allocate();
myRGBIteratorType it1( myImage, myImage->GetRequestedRegion() );
// Value to initialize the pixels
myRGBImageType::PixelType color;
// Initializing all the pixel in the image
it1.GoToBegin();
while( !it1.IsAtEnd() )
{
color.Set( (float) vnl_sample_uniform(0.0, 1.0),
(float) vnl_sample_uniform(0.0, 1.0),
(float) vnl_sample_uniform(0.0, 1.0) );
it1.Set(color);
++it1;
}
// Reading the values to verify the image content
std::cout << "--- Initial image --- " << std::endl;
it1.GoToBegin();
while( !it1.IsAtEnd() )
{
const myRGBImageType::PixelType c( it1.Get() );
std::cout << c.GetRed() << " ";
std::cout << c.GetGreen() << " ";
std::cout << c.GetBlue() << std::endl;
++it1;
}
bool passed = true;
// Convert to a red image
itk::AdaptImageFilter<myRGBImageType, myImageType, myRedAccessorType>::Pointer adaptImageToRed = itk::AdaptImageFilter<myRGBImageType, myImageType, myRedAccessorType>::New();
FilterWatcher redWatcher(adaptImageToRed, "Red");
adaptImageToRed->SetInput(myImage);
adaptImageToRed->UpdateLargestPossibleRegion();
adaptImageToRed->SetFunctor(adaptImageToRed->GetFunctor());
myIteratorType it( adaptImageToRed->GetOutput(), adaptImageToRed->GetOutput()->GetRequestedRegion() );
std::cout << "--- Red values --- " << std::endl;
it.GoToBegin();
it1.GoToBegin();
while( !it.IsAtEnd() )
{
std::cout << it.Get() << std::endl;
if (it.Get() != it1.Get().GetRed())
{
passed = false;
}
++it;
++it1;
}
// Convert to a green image
itk::AdaptImageFilter<myRGBImageType, myImageType, myGreenAccessorType>::Pointer adaptImageToGreen = itk::AdaptImageFilter<myRGBImageType, myImageType, myGreenAccessorType>::New();
FilterWatcher greenWatcher(adaptImageToGreen, "Green");
adaptImageToGreen->SetInput(myImage);
adaptImageToGreen->UpdateLargestPossibleRegion();
it = myIteratorType( adaptImageToGreen->GetOutput(), adaptImageToGreen->GetOutput()->GetRequestedRegion() );
std::cout << "--- Green values --- " << std::endl;
it.GoToBegin();
it1.GoToBegin();
while( !it.IsAtEnd() )
{
std::cout << it.Get() << std::endl;
if (it.Get() != it1.Get().GetGreen())
{
passed = false;
}
++it;
++it1;
}
// Convert to a blue image
itk::AdaptImageFilter<myRGBImageType, myImageType, myBlueAccessorType>::Pointer adaptImageToBlue = itk::AdaptImageFilter<myRGBImageType, myImageType, myBlueAccessorType>::New();
FilterWatcher blueWatcher(adaptImageToBlue, "Blue");
adaptImageToBlue->SetInput(myImage);
adaptImageToBlue->UpdateLargestPossibleRegion();
it = myIteratorType( adaptImageToBlue->GetOutput(), adaptImageToBlue->GetOutput()->GetRequestedRegion() );
std::cout << "--- Blue values --- " << std::endl;
it.GoToBegin();
it1.GoToBegin();
while( !it.IsAtEnd() )
{
std::cout << it.Get() << std::endl;
if (it.Get() != it1.Get().GetBlue())
{
passed = false;
}
++it;
++it1;
}
std::cout << std::endl;
if (passed)
{
std::cout << "AdaptImageFilterTest passed" << std::endl;
return EXIT_SUCCESS;
}
else
{
std::cout << "AdaptImageFilterTest passed" << std::endl;
return EXIT_FAILURE;
}
}
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