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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 <ctime>
#include <iostream>
#include "itkIndex.h"
#include "itkImage.h"
#include "itkImageRegionIterator.h"
#include "itkImageFileWriter.h"
#include "itkMaskFeaturePointSelectionFilter.h"
#include "itkImageFileReader.h"
#include "itkImageFileWriter.h"
#include "itkRGBPixel.h"
int itkMaskFeaturePointSelectionFilterTest( int argc, char * argv[] )
{
if( argc < 2 )
{
std::cerr << "Usage: " << std::endl;
std::cerr << " itkMaskFeaturePointSelectionFilterTest inputImageFile outputImageFile [Mask File] ";
return EXIT_FAILURE;
}
typedef unsigned char InputPixelType;
typedef itk::RGBPixel<InputPixelType> OutputPixelType;
typedef itk::Image< InputPixelType, 3 > InputImageType;
typedef itk::Image< OutputPixelType, 3 > OutputImageType;
typedef itk::Matrix< itk::SpacePrecisionType, 3, 3 > PointSetPixelType;
typedef itk::PointSet< PointSetPixelType, 3 > PointSetType;
typedef itk::ImageFileReader< InputImageType > ReaderType;
typedef itk::MaskFeaturePointSelectionFilter< InputImageType, InputImageType, PointSetType > FilterType;
//Set up the reader
ReaderType::Pointer reader = ReaderType::New();
reader->SetFileName( argv[1] );
// Set up filter
FilterType::Pointer filter = FilterType::New();
filter->SetInput( reader->GetOutput() );
filter->SetSelectFraction( 0.01 );
filter->ComputeStructureTensorsOff();
std::cout << "Filter: " << filter << std::endl;
try
{
filter->Update();
}
catch ( itk::ExceptionObject &err )
{
std::cerr << err << std::endl;
return EXIT_FAILURE;
}
//Set up the writer
typedef itk::ImageFileWriter< OutputImageType > WriterType;
WriterType::Pointer writer = WriterType::New();
typedef itk::ImageRegionConstIterator< InputImageType > InputIteratorType;
InputIteratorType inputIterator( reader->GetOutput(), reader->GetOutput()->GetBufferedRegion() );
typedef itk::ImageRegionIterator< OutputImageType > OutputIteratorType;
OutputImageType::Pointer outputImage = OutputImageType::New();
outputImage->CopyInformation( reader->GetOutput() );
outputImage->SetBufferedRegion( reader->GetOutput()->GetBufferedRegion() );
outputImage->SetRequestedRegion( reader->GetOutput()->GetRequestedRegion() );
outputImage->Allocate();
OutputIteratorType outputIterator( outputImage, outputImage->GetBufferedRegion() );
inputIterator.GoToBegin();
outputIterator.GoToBegin();
// Copy input image to output image
while (!outputIterator.IsAtEnd())
{
OutputPixelType rgbPixel;
rgbPixel.SetRed( inputIterator.Get() );
rgbPixel.SetGreen( inputIterator.Get());
rgbPixel.SetBlue( inputIterator.Get() );
outputIterator.Set( rgbPixel );
++outputIterator;
++inputIterator;
}
//Highlight the feature points identified in the output image
typedef PointSetType::PointsContainer::ConstIterator PointIteratorType;
PointIteratorType pointItr =
filter->GetOutput()->GetPoints()->Begin();
PointIteratorType pointEnd =
filter->GetOutput()->GetPoints()->End();
OutputImageType::IndexType index;
//Highlight the feature point in red color
OutputPixelType colorValue;
colorValue.SetRed( 255u );
colorValue.SetGreen( 0u );
colorValue.SetBlue( 0u );
while ( pointItr != pointEnd )
{
if ( outputImage->TransformPhysicalPointToIndex(pointItr.Value(), index) )
{
outputImage->SetPixel(index, colorValue);
}
pointItr++;
}
writer->SetFileName( argv[2] );
writer->SetInput( outputImage );
writer->Update();
return EXIT_SUCCESS;
}
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