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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 "itkShiftScaleImageFilter.h"
#include "itkRandomImageSource.h"
#include "itkFilterWatcher.h"
int itkShiftScaleImageFilterTest(int, char* [] )
{
std::cout << "itkShiftScaleImageFilterTest Start" << std::endl;
typedef itk::Image<char,3> TestInputImage;
typedef itk::Image<unsigned char,3> TestOutputImage;
typedef itk::NumericTraits<char>::RealType RealType;
TestInputImage::Pointer inputImage = TestInputImage::New();
TestInputImage::RegionType region;
TestInputImage::SizeType size; size.Fill(64);
TestInputImage::IndexType index; index.Fill(0);
region.SetIndex (index);
region.SetSize (size);
// first try a constant image
double fillValue = -100.0;
inputImage->SetRegions( region );
inputImage->Allocate();
inputImage->FillBuffer( static_cast< TestInputImage::PixelType >( fillValue ) );
typedef itk::ShiftScaleImageFilter<TestInputImage,TestOutputImage> FilterType;
FilterType::Pointer filter = FilterType::New();
// Set up Start, End and Progress callbacks
FilterWatcher filterWatch(filter);
// Filter the image
filter->SetInput (inputImage);
filter->UpdateLargestPossibleRegion();
// Now generate a real image
typedef itk::RandomImageSource<TestInputImage> SourceType;
SourceType::Pointer source = SourceType::New();
TestInputImage::SizeValueType randomSize[3] = {17, 8, 20};
// Set up Start, End and Progress callbacks
FilterWatcher sourceWatch(source);
// Set up source
source->SetSize( randomSize );
double minValue = -128.0;
double maxValue = 127.0;
source->SetMin( static_cast< TestInputImage::PixelType >( minValue ) );
source->SetMax( static_cast< TestInputImage::PixelType >( maxValue ) );
std::cout << source;
// Test GetMacros
RealType getShift = filter->GetShift();
std::cout << "filter->GetShift(): " << getShift << std::endl;
RealType getScale = filter->GetScale();
std::cout << "filter->GetScale(): " << getScale << std::endl;
long underflowCount = filter->GetUnderflowCount();
std::cout << "filter->GetUnderflowCount(): " << underflowCount << std::endl;
long overflowCount = filter->GetOverflowCount();
std::cout << "filter->GetOverflowCount(): " << overflowCount << std::endl;
filter->SetInput(source->GetOutput());
filter->SetScale(4.0);
try
{
filter->UpdateLargestPossibleRegion();
}
catch (itk::ExceptionObject& e)
{
std::cerr << "Exception detected: " << e;
return -1;
}
return EXIT_SUCCESS;
}
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