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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.
*
*=========================================================================*/
#include <iostream>
#include "itkRGBPixel.h"
#include "itkComposeImageFilter.h"
int itkComposeRGBImageFilterTest(int , char * [])
{
typedef unsigned char PixelType;
typedef itk::Image< PixelType, 3 > InputImageType;
typedef itk::RGBPixel<unsigned char> RGBPixelType;
typedef itk::Image< RGBPixelType, 3 > OutputImageType;
typedef itk::ComposeImageFilter< InputImageType, OutputImageType > FilterType;
typedef InputImageType::RegionType RegionType;
typedef InputImageType::SizeType SizeType;
typedef InputImageType::IndexType IndexType;
FilterType::Pointer filter = FilterType::New();
InputImageType::Pointer redImage = InputImageType::New();
InputImageType::Pointer greenImage = InputImageType::New();
InputImageType::Pointer blueImage = InputImageType::New();
SizeType size;
size[0] = 2;
size[1] = 2;
size[2] = 2;
IndexType start;
start.Fill( 0 );
RegionType region;
region.SetIndex( start );
region.SetSize( size );
redImage->SetRegions( region );
greenImage->SetRegions( region );
blueImage->SetRegions( region );
redImage->Allocate();
greenImage->Allocate();
blueImage->Allocate();
redImage->FillBuffer( 29 );
greenImage->FillBuffer( 51 );
blueImage->FillBuffer( 83 );
filter->SetInput1( redImage );
filter->SetInput2( greenImage );
filter->SetInput3( blueImage );
try
{
filter->Update();
}
catch( itk::ExceptionObject & excp )
{
std::cerr << "Exception caught !" << std::endl;
std::cerr << excp << std::endl;
return EXIT_FAILURE;
}
OutputImageType::Pointer rgbImage = filter->GetOutput();
typedef itk::ImageRegionIterator<OutputImageType> OutputIterator;
typedef itk::ImageRegionIterator<InputImageType> InputIterator;
InputIterator ir( redImage, region );
InputIterator ig( greenImage, region );
InputIterator ib( blueImage, region );
OutputIterator ot( rgbImage, region );
ir.GoToBegin();
ig.GoToBegin();
ib.GoToBegin();
ot.GoToBegin();
typedef OutputImageType::PixelType OutputPixelType;
while( !ot.IsAtEnd() )
{
OutputPixelType outp = ot.Get();
if( ir.Get() != outp.GetRed() )
{
std::cerr << "Error in red component" << std::endl;
return EXIT_FAILURE;
}
if( ig.Get() != outp.GetGreen() )
{
std::cerr << "Error in green component" << std::endl;
return EXIT_FAILURE;
}
if( ib.Get() != outp.GetBlue() )
{
std::cerr << "Error in blue component" << std::endl;
return EXIT_FAILURE;
}
++ot;
++ir;
++ig;
++ib;
}
std::cout << "Test Passed !" << std::endl;
return EXIT_SUCCESS;
}
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