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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 "itkDisplacementFieldJacobianDeterminantFilter.h"
int itkWarpJacobianDeterminantFilterTest(int, char* [] )
{
// Define the dimension of the images
const unsigned int ImageDimension = 3;
typedef itk::Vector< double, ImageDimension > DeformationPixelType;
typedef unsigned char OutputPixelType;
// Declare the types of the images
typedef itk::Image<DeformationPixelType, ImageDimension> DisplacementFieldType;
typedef itk::Image<OutputPixelType, ImageDimension> OutputImageType;
// Declare Iterator types apropriated for each image
typedef itk::ImageRegionIteratorWithIndex< DisplacementFieldType > DeformationIteratorType;
typedef itk::ImageRegionIteratorWithIndex< OutputImageType > OutputIteratorType;
// Declare the type of the index to access images
typedef itk::Index<ImageDimension> IndexType;
// Declare the type of the size
typedef itk::Size<ImageDimension> SizeType;
// Declare the type of the Region
typedef itk::ImageRegion<ImageDimension> RegionType;
// Create two images
DisplacementFieldType ::Pointer inputDisplacementField = DisplacementFieldType ::New();
// Define their size, and start index
SizeType size;
size[0] = 2;
size[1] = 2;
size[2] = 2;
IndexType start;
start[0] = 0;
start[1] = 0;
start[2] = 0;
RegionType region;
region.SetIndex( start );
region.SetSize( size );
// Initialize Image A
inputDisplacementField->SetLargestPossibleRegion( region );
inputDisplacementField->SetBufferedRegion( region );
inputDisplacementField->SetRequestedRegion( region );
inputDisplacementField->Allocate();
// Create one iterator for the Input Image (this is a light object)
DeformationIteratorType it( inputDisplacementField, inputDisplacementField->GetBufferedRegion() );
// Initialize the content of Image A
DeformationPixelType vectorValue;
vectorValue.Fill( 5.0 ); // FIXME: replace with something more interesting...
it.GoToBegin();
while( !it.IsAtEnd() )
{
it.Set( vectorValue );
std::cout << it.Get() << std::endl;
++it;
}
// Declare the type for the Log filter
typedef itk::DisplacementFieldJacobianDeterminantFilter<
DisplacementFieldType, float, OutputImageType > FilterType;
// Create one Filter
FilterType::Pointer filter = FilterType::New();
// Connect the input images
filter->SetInput( inputDisplacementField );
// Execute the filter
filter->Update();
// Get the Smart Pointer to the Filter Output
OutputImageType::Pointer outputImage = filter->GetOutput();
// Create an iterator for going through the image output
OutputIteratorType ot(outputImage, outputImage->GetRequestedRegion());
// Check the content of the result image
std::cout << "Verification of the output " << std::endl;
ot.GoToBegin();
it.GoToBegin();
while( !ot.IsAtEnd() )
{
DeformationPixelType input = it.Get();
OutputPixelType output = ot.Get();
std::cout << input << " => ";
std::cout << output << std::endl;
++ot;
++it;
}
return EXIT_SUCCESS;
}
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