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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 "itkConstantPadImageFilter.h"
#include "itkStreamingImageFilter.h"
#include "itkFilterWatcher.h"
#include "itkMath.h"
int itkConstantPadImageTest(int, char* [] )
{
// typedefs to simplify the syntax
typedef itk::Image< short, 2 > ShortImage;
typedef itk::Image< float, 2 > FloatImage;
// Test the creation of an image with native type
ShortImage::Pointer image = ShortImage::New();
// fill in an image
ShortImage::IndexType index = {{0, 0}};
ShortImage::SizeType size = {{8, 12}};
ShortImage::RegionType region;
int row, column;
region.SetSize( size );
region.SetIndex( index );
image->SetLargestPossibleRegion( region );
image->SetBufferedRegion( region );
image->Allocate();
itk::ImageRegionIterator< ShortImage > iterator(image, region);
short i=0;
for (; !iterator.IsAtEnd(); ++iterator, ++i)
{
iterator.Set( i );
}
// Create a filter
typedef itk::ConstantPadImageFilter< ShortImage, FloatImage > PadFilterType;
PadFilterType::Pointer constantPad = PadFilterType::New();
FilterWatcher watch( constantPad );
constantPad->SetInput( image );
typedef ShortImage::SizeValueType SizeValueType;
typedef ShortImage::IndexValueType IndexValueType;
SizeValueType upperFactors[2] = { 0, 0 };
SizeValueType lowerFactors[2] = { 0, 0 };
float constant = 13.3f;
constantPad->SetConstant( constant );
// check the method using the SizeType rather than the simple table type.
ShortImage::SizeType stfactors;
stfactors.Fill( 0 );
constantPad->SetPadLowerBound( stfactors );
constantPad->SetPadUpperBound( stfactors );
constantPad->SetPadBound( stfactors );
constantPad->UpdateLargestPossibleRegion();
std::cout << constantPad << std::endl;
std::cout << "Input spacing: " << image->GetSpacing()[0] << ", "
<< image->GetSpacing()[1] << std::endl;
std::cout << "Output spacing: " << constantPad->GetOutput()->GetSpacing()[0]
<< ", "
<< constantPad->GetOutput()->GetSpacing()[1] << std::endl;
ShortImage::RegionType requestedRegion;
bool passed;
// CASE 1
lowerFactors[0] = 1; lowerFactors[1] = 2;
upperFactors[0] = 3; upperFactors[1] = 4;
constantPad->SetPadLowerBound( lowerFactors );
constantPad->SetPadUpperBound( upperFactors );
constantPad->UpdateLargestPossibleRegion();
requestedRegion = constantPad->GetOutput()->GetRequestedRegion();
itk::ImageRegionIterator< FloatImage >
iteratorIn1( constantPad->GetOutput(), requestedRegion );
passed = true;
size = requestedRegion.GetSize();
index = requestedRegion.GetIndex();
if ((index[0] != (0 - (IndexValueType) lowerFactors[0]))
|| (index[1] != (0 - (IndexValueType) lowerFactors[1]))
|| (size[0] != (8 + lowerFactors[0] + upperFactors[0]))
|| (size[1] != (12 + lowerFactors[1] + upperFactors[1])))
{
passed = false;
}
else
{
for (; !iteratorIn1.IsAtEnd(); ++iteratorIn1)
{
row = iteratorIn1.GetIndex()[0];
column = iteratorIn1.GetIndex()[1];
if ((row < 0) || (row>7) || (column < 0) || (column > 11))
{
if ( itk::Math::NotExactlyEquals(iteratorIn1.Get(), constant) )
{
passed = false;
}
}
else
{
int nextVal = 8*column+row;
if (itk::Math::NotExactlyEquals(iteratorIn1.Get(), nextVal))
{
std::cout << "Error: (" << row << ", " << column
<< "), expected " << nextVal << " got "
<< iteratorIn1.Get() << std::endl;
passed = false;
}
}
}
}
if (passed)
{
std::cout << "constantPadImageFilter case 1 passed." << std::endl;
}
else
{
std::cout << "constantPadImageFilter case 1 failed." << std::endl;
return EXIT_FAILURE;
}
// CASE 2
lowerFactors[0] = 10;
upperFactors[1] = 15;
constantPad->SetPadLowerBound( lowerFactors );
constantPad->SetPadUpperBound( upperFactors );
// Create a stream
typedef itk::StreamingImageFilter< FloatImage, FloatImage > StreamingFilter;
StreamingFilter::Pointer stream = StreamingFilter::New();
stream->SetInput( constantPad->GetOutput() );
stream->SetNumberOfStreamDivisions( 2 );
if ((constantPad->GetPadUpperBound()[0] != upperFactors[0])
|| (constantPad->GetPadUpperBound()[1] != upperFactors[1])
|| (constantPad->GetPadLowerBound()[0] != lowerFactors[0])
|| (constantPad->GetPadLowerBound()[1] != lowerFactors[1]))
{
passed = false;
}
else
{
stream->UpdateLargestPossibleRegion();
requestedRegion = stream->GetOutput()->GetRequestedRegion();
itk::ImageRegionIterator< FloatImage >
iteratorIn2(stream->GetOutput(), requestedRegion);
passed = true;
size = requestedRegion.GetSize();
index = requestedRegion.GetIndex();
if ((index[0] != (0 - (IndexValueType) lowerFactors[0]))
|| (index[1] != (0 - (IndexValueType) lowerFactors[1]))
|| (size[0] != (8 + lowerFactors[0] + upperFactors[0]))
|| (size[1] != (12 + lowerFactors[1] + upperFactors[1])))
{
passed = false;
}
else
{
for (; !iteratorIn2.IsAtEnd(); ++iteratorIn2)
{
row = iteratorIn2.GetIndex()[0];
column = iteratorIn2.GetIndex()[1];
if ((row < 0) || (row>7) || (column < 0) || (column > 11))
{
if ( itk::Math::NotExactlyEquals(iteratorIn2.Get(), constant) )
{
passed = false;
}
}
else
{
int nextVal = 8*column+row;
if (itk::Math::NotExactlyEquals(iteratorIn2.Get(), nextVal))
{
std::cout << "Error: (" << row << ", " << column
<< "), expected " << nextVal << " got "
<< iteratorIn2.Get() << std::endl;
passed = false;
}
}
}
}
}
if ( passed )
{
std::cout << "constantPadImageFilter case 2 passed." << std::endl;
}
else
{
std::cout << "constantPadImageFilter case 2 failed." << std::endl;
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
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