1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85
|
/*=========================================================================
*
* 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 "itkComposeDisplacementFieldsImageFilter.h"
#include "itkImageRegionIterator.h"
int
itkComposeDisplacementFieldsImageFilterTest(int, char *[])
{
constexpr unsigned int ImageDimension = 2;
using VectorType = itk::Vector<float, ImageDimension>;
using DisplacementFieldType = itk::Image<VectorType, ImageDimension>;
// Create a displacement field
DisplacementFieldType::PointType origin;
DisplacementFieldType::SpacingType spacing;
DisplacementFieldType::SizeType size;
DisplacementFieldType::DirectionType direction;
direction.SetIdentity();
origin.Fill(0.0);
spacing.Fill(0.5);
size.Fill(100);
auto ones = itk::MakeFilled<VectorType>(1);
auto field = DisplacementFieldType::New();
field->SetOrigin(origin);
field->SetSpacing(spacing);
field->SetRegions(size);
field->SetDirection(direction);
field->Allocate();
field->FillBuffer(ones);
using ComposerType = itk::ComposeDisplacementFieldsImageFilter<DisplacementFieldType>;
auto composer = ComposerType::New();
composer->SetDisplacementField(field);
composer->SetWarpingField(field);
composer->Update();
std::cout << "displacement field: " << composer->GetDisplacementField() << std::endl;
std::cout << "warping field: " << composer->GetWarpingField() << std::endl;
std::cout << "interpolator: " << composer->GetInterpolator() << std::endl;
try
{
composer->Update();
}
catch (const itk::ExceptionObject & excp)
{
std::cerr << "Exception thrown " << std::endl;
std::cerr << excp << std::endl;
}
DisplacementFieldType::IndexType index;
index[0] = 30;
index[1] = 30;
VectorType v = composer->GetOutput()->GetPixel(index);
if (itk::Math::NotAlmostEquals(v[0], 2) || itk::Math::NotAlmostEquals(v[1], 2))
{
std::cerr << "Failed to compose properly." << std::endl;
}
composer->Print(std::cout, 3);
return EXIT_SUCCESS;
}
|