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/*=========================================================================
*
* Copyright Insight Software Consortium
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0.txt
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*=========================================================================*/
//-------------------------------------------
//
// Example of the use of Adaptors
// to get access to the red component
// of an RGBPixel image
//
//-------------------------------------------
#include "itkImageAdaptor.h"
#include "itkImageRegionIteratorWithIndex.h"
#include "itkRedPixelAccessor.h"
#include "itkAddImageFilter.h"
#include "itkStdStreamStateSave.h"
int itkImageAdaptorPipeLineTest(int, char* [] )
{
// Save the format stream variables for std::cout
// They will be restored when coutState goes out of scope
// scope.
itk::StdStreamStateSave coutState(std::cout);
//-------------------------------------------------------------
// Typedefs
//-------------------------------------------------------------
// Float Image typedefs
typedef float myFloatPixelType;
typedef itk::Image<myFloatPixelType, 3> myFloatImageType;
typedef myFloatImageType::SizeType mySizeType;
typedef myFloatImageType::IndexType myIndexType;
typedef myFloatImageType::RegionType myRegionType;
// RGBPixel Image typedefs
typedef itk::RGBPixel<myFloatPixelType> myRGBPixelPixelType;
typedef itk::Image<myRGBPixelPixelType, 3> myRGBPixelImageType;
typedef itk::RedPixelAccessor<myFloatPixelType> myAccessorType;
typedef itk::ImageAdaptor<myRGBPixelImageType,
myAccessorType> myAdaptorType;
typedef itk::ImageRegionIteratorWithIndex<
myFloatImageType > myFloatIteratorType;
typedef itk::ImageRegionIteratorWithIndex<
myRGBPixelImageType > myRGBPixelIteratorType;
typedef itk::AddImageFilter< myAdaptorType,
myFloatImageType,
myFloatImageType > myFilterType;
//-------------------------------------------------------------
// Create and Allocate the image
//-------------------------------------------------------------
// Define their size, and start index
mySizeType size;
size[0] = 2;
size[1] = 2;
size[2] = 2; // Small size, because we are printing it
myIndexType start;
start[0]= 0;
start[1]= 0;
start[2]= 0;
myRegionType region;
region.SetIndex( start );
region.SetSize( size );
const float spacing[3] = { 1.0, 1.0, 1.0 };
//-------------------------------------------------------------
// Create and Initialize the RGBPixel image
//-------------------------------------------------------------
myRGBPixelImageType::Pointer myRGBPixelImage = myRGBPixelImageType::New();
myRGBPixelImage->SetLargestPossibleRegion( region );
myRGBPixelImage->SetBufferedRegion( region );
myRGBPixelImage->SetRequestedRegion( region );
myRGBPixelImage->Allocate();
myRGBPixelImage->SetSpacing( spacing );
myRGBPixelIteratorType it( myRGBPixelImage, myRGBPixelImage->GetRequestedRegion() );
myRGBPixelPixelType initialRGBPixelValue;
initialRGBPixelValue.SetRed( 10 );
initialRGBPixelValue.SetBlue( 30 );
initialRGBPixelValue.SetGreen( 20 );
while( !it.IsAtEnd() )
{
it.Set( initialRGBPixelValue );
++it;
}
std::cout << "Initial RGBPixel Image Values : " << std::endl;
it.GoToBegin();
while( !it.IsAtEnd() )
{
myIndexType index = it.GetIndex();
std::cout << "[";
std::cout.width(3);
std::cout << index[0] << ",";
std::cout.width(3);
std::cout << index[1] << ",";
std::cout.width(3);
std::cout << index[2] << "] = ";
std::cout.width(4);
std::cout << it.Get().GetRed() << ",";
std::cout.width(4);
std::cout << it.Get().GetGreen() << ",";
std::cout.width(4);
std::cout << it.Get().GetBlue() << std::endl;
++it;
}
std::cout << "RGBPixel Image Initializaed" << std::endl;
//-------------------------------------------------------------
// Create and Initialize the Float image
//-------------------------------------------------------------
myFloatImageType::Pointer myFloatImage = myFloatImageType::New();
myFloatImage->SetLargestPossibleRegion( region );
myFloatImage->SetBufferedRegion( region );
myFloatImage->SetRequestedRegion( region );
myFloatImage->Allocate();
myFloatImage->SetSpacing( spacing );
myFloatIteratorType itf( myFloatImage, myFloatImage->GetRequestedRegion() );
myFloatPixelType initialFloatValue = 5.0;
while( !itf.IsAtEnd() )
{
itf.Set( initialFloatValue );
++itf;
}
std::cout << "Initial Float Image Values : " << std::endl;
itf.GoToBegin();
while( !itf.IsAtEnd() )
{
myIndexType index = itf.GetIndex();
std::cout << "[";
std::cout.width(3);
std::cout << index[0] << ",";
std::cout.width(3);
std::cout << index[1] << ",";
std::cout.width(3);
std::cout << index[2] << "] = ";
std::cout.width(8);
std::cout << itf.Get() << std::endl;
++itf;
}
std::cout << "Float Image Initializaed" << std::endl;
//-------------------------------------------------------------
// Create the adaptor and connect the image
//-------------------------------------------------------------
myAdaptorType::Pointer myAdaptor = myAdaptorType::New();
myAdaptor->SetImage( myRGBPixelImage );
//-------------------------------------------------------------
// Create the filter and connect the inputs
//-------------------------------------------------------------
myFilterType::Pointer filter = myFilterType::New();
filter->SetInput1( myAdaptor );
filter->SetInput2( myFloatImage );
//-------------------------------------------------------------
// Set the requested region of the Output image
//-------------------------------------------------------------
myFloatImageType::Pointer myFloatOutputImage = filter->GetOutput();
myFloatOutputImage->SetSpacing( spacing );
std::cout << "Float Output Image Initializaed" << std::endl;
//-------------------------------------------------------------
// Force the execution of the filter
//-------------------------------------------------------------
std::cout << "Calling filter Update" << std::endl;
filter->Update();
std::cout << "Filter Updated" << std::endl;
//-------------------------------------------------------------
// Force the execution of the filter
//-------------------------------------------------------------
myFloatOutputImage = filter->GetOutput();
myFloatIteratorType ito( myFloatOutputImage, myFloatOutputImage->GetRequestedRegion() );
std::cout << std::endl;
std::cout << "Filter Output :" << std::endl;
while( !ito.IsAtEnd() )
{
myIndexType index = ito.GetIndex();
std::cout << "[";
std::cout.width(3);
std::cout << index[0] << ",";
std::cout.width(3);
std::cout << index[1] << ",";
std::cout.width(3);
std::cout << index[2] << "] = ";
std::cout.width(8);
std::cout << ito.Get() << std::endl;
++ito;
}
//-------------------------------------------------------------
// Test Graft() method
//-------------------------------------------------------------
myAdaptorType::Pointer myGraftedAdaptor = myAdaptorType::New();
myGraftedAdaptor->Graft(myAdaptor);
if(myGraftedAdaptor->GetPixelContainer() != myAdaptor->GetPixelContainer() )
{
std::cerr << "Graft test failed." << std::endl;
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
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