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/*=========================================================================
*
* Copyright NumFOCUS
*
* 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
*
* https://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.
*
*=========================================================================*/
#ifndef makeRandomImageBsplineInterpolator_h
#define makeRandomImageBsplineInterpolator_h
#include "itkBSplineResampleImageFunction.h"
#include "itkRandomImageSource.h"
template <typename BSplineInterpolatorFunctionType>
typename BSplineInterpolatorFunctionType::Pointer
makeRandomImageInterpolator(const int SplineOrder)
{
using ImageType = typename BSplineInterpolatorFunctionType::InputImageType;
/** Generate a random input image and connect to BSpline decomposition filter */
using SourceType = itk::RandomImageSource<ImageType>;
typename SourceType::Pointer source = SourceType::New();
{
using DirectionType = typename ImageType::DirectionType;
DirectionType nonTrivialDirection;
nonTrivialDirection[0][0] = 0;
nonTrivialDirection[0][1] = -1;
nonTrivialDirection[1][0] = 1;
nonTrivialDirection[1][1] = 0;
std::cout << "DIRECTION\n" << nonTrivialDirection << std::endl;
source->SetDirection(nonTrivialDirection);
}
{
using SpacingType = typename ImageType::SpacingType;
SpacingType spacing;
spacing.Fill(2.0);
source->SetSpacing(spacing);
}
{
using PointType = typename ImageType::PointType;
PointType origin;
origin.Fill(10.0);
source->SetOrigin(origin);
}
{
using SizeType = typename ImageType::SizeType;
SizeType size;
size.Fill(32);
source->SetSize(size);
}
source->SetMin(0.0);
source->SetMax(10.0);
source->Update();
typename ImageType::Pointer randImage = source->GetOutput();
/** Set up a BSplineInterpolateImageFunction for comparison. */
typename BSplineInterpolatorFunctionType::Pointer interpolator = BSplineInterpolatorFunctionType::New();
interpolator->SetSplineOrder(SplineOrder);
interpolator->SetInputImage(randImage);
return interpolator;
}
#endif
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