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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.
*
*=========================================================================*/
#include "itkOptimizerParameters.h"
#include "itkImageVectorOptimizerParametersHelper.h"
#include "itkTestingMacros.h"
#include "itkMath.h"
namespace
{
using ValueType = double;
constexpr itk::SizeValueType ImageDimension = 2;
constexpr itk::SizeValueType VectorDimension = 4;
using VectorPixelType = itk::Vector<ValueType, VectorDimension>;
using ImageVectorType = itk::Image<VectorPixelType, ImageDimension>;
using ImageVectorPointer = ImageVectorType::Pointer;
using RegionType = ImageVectorType::RegionType;
using SizeType = RegionType::SizeType;
using IndexType = ImageVectorType::IndexType;
using VectorPixelContainer = ImageVectorType::PixelContainer;
using OptimizerParametersType = itk::OptimizerParameters<ValueType>;
using ImageVectorOptimizerParametersHelperType =
itk::ImageVectorOptimizerParametersHelper<ValueType, VectorDimension, ImageDimension>;
int
testMemoryAccess(OptimizerParametersType & params, ImageVectorPointer imageOfVectors, itk::SizeValueType dimLength)
{
int result = EXIT_SUCCESS;
for (itk::SizeValueType y = 0; y < dimLength; ++y)
{
for (itk::SizeValueType x = 0; x < dimLength; ++x)
{
IndexType index;
index[0] = x;
index[1] = y;
// The image index returns a N-dim vector, so have to check each
// element against the values returned by parameter object.
itk::OffsetValueType offset = (x + y * dimLength) * VectorDimension;
VectorPixelType vectorpixel = imageOfVectors->GetPixel(index);
for (itk::SizeValueType ind = 0; ind < VectorDimension; ++ind)
{
ValueType paramsValue = params[offset + ind];
if (itk::Math::NotExactlyEquals(vectorpixel[ind], paramsValue))
{
std::cout << "VectorImage pixel value does not match params value."
<< "vectorpixel[" << ind << "]: " << vectorpixel[ind] << std::endl
<< "params[" << offset + ind << "]: " << paramsValue << std::endl;
result = EXIT_FAILURE;
}
}
}
}
return result;
}
} // namespace
/******************************************************/
int
itkImageVectorOptimizerParametersHelperTest(int, char *[])
{
int result = EXIT_SUCCESS;
ImageVectorPointer imageOfVectors = ImageVectorType::New();
IndexType start;
start.Fill(0);
SizeType size;
constexpr int dimLength = 3;
size.Fill(dimLength);
RegionType region{ start, size };
imageOfVectors->SetRegions(region);
imageOfVectors->Allocate();
ImageVectorType::PointType origin;
ImageVectorType::SpacingType spacing;
origin.Fill(0.0);
spacing.Fill(1.0);
imageOfVectors->SetOrigin(origin);
imageOfVectors->SetSpacing(spacing);
ValueType vectorinitvalues[VectorDimension] = { 0.0, 0.1, 0.2, 0.3 };
VectorPixelType vectorvalues(vectorinitvalues);
//
// Fill up the image values with the function
//
// Intensity = f(x,y) = x + 3 * y
//
//
for (int y = 0; y < dimLength; ++y)
{
for (int x = 0; x < dimLength; ++x)
{
IndexType index;
index[0] = x;
index[1] = y;
const ValueType value = x + y * dimLength;
VectorPixelType & vectorpixel = imageOfVectors->GetPixel(index);
vectorpixel.Fill(value);
vectorpixel += vectorvalues;
std::cout << value << ' ';
}
std::cout << std::endl;
}
// Create a parameter object and assign the ImageVector helper.
OptimizerParametersType params;
auto * imageVectorParamsHelper = new ImageVectorOptimizerParametersHelperType;
// Assign the helper to the parameter object.
// OptimizerParameters object will manage the helper once its been set.
params.SetHelper(imageVectorParamsHelper);
// Set the image in the helper. It will point the parameter data pointer
// to the image data.
params.SetParametersObject(imageOfVectors);
result = testMemoryAccess(params, imageOfVectors, dimLength);
// Test MoveDataPointer
itk::Array<ValueType> array(imageOfVectors->GetPixelContainer()->Size());
array.Fill(1.23);
params.MoveDataPointer(array.data_block());
// Test null image pointer
params.SetParametersObject(nullptr);
ITK_TRY_EXPECT_EXCEPTION(params.MoveDataPointer(array.data_block()));
// Test setting an image of wrong type
using BadImageType = itk::Image<char, 2>;
auto badImage = BadImageType::New();
ITK_TRY_EXPECT_EXCEPTION(params.SetParametersObject(badImage));
return result;
}
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