ITK  6.0.0
Insight Toolkit
SphinxExamples/src/Filtering/MathematicalMorphology/ValuedRegionalMinimalImage/Code.cxx
/*=========================================================================
*
* 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 "itkImage.h"
using ImageType = itk::Image<unsigned char, 2>;
static void
CreateImage(ImageType::Pointer image);
int
main()
{
auto image = ImageType::New();
CreateImage(image);
using ValuedRegionalMinimaImageFilter = itk::ValuedRegionalMinimaImageFilter<ImageType, ImageType>;
filter->SetInput(image);
itk::WriteImage(image, "input.png");
itk::WriteImage(filter->GetOutput(), "output.png");
return EXIT_SUCCESS;
}
void
CreateImage(ImageType::Pointer image)
{
// Create an image with 2 connected components
start[0] = 0;
start[1] = 0;
unsigned int NumRows = 200;
unsigned int NumCols = 300;
size[0] = NumCols;
size[1] = NumRows;
region.SetSize(size);
region.SetIndex(start);
image->SetRegions(region);
image->Allocate();
// Make two intensity blobs
for (unsigned int r = 0; r < NumRows; ++r)
{
for (unsigned int c = 0; c < NumCols; ++c)
{
pixelIndex[0] = c;
pixelIndex[1] = r;
double c1 = c - 100.0;
double c2 = c - 200.0;
double rr = r - 100.0;
double v1 = 200.0 - std::sqrt(rr * rr + c1 * c1);
double v2 = 150.0 - std::sqrt(rr * rr + c2 * c2);
if (v1 > 190.0)
v1 = 190.0;
if (v2 > 140.0)
v2 = 140.0;
double maxv = v1;
if (maxv < v2)
maxv = v2;
double val = maxv;
if (val < 0.0)
val = 0.0;
if (val > 255.0)
val = 255.0;
if (c < 5)
val = 255.0;
image->SetPixel(pixelIndex, static_cast<unsigned char>(val));
}
}
}
Pointer
SmartPointer< Self > Pointer
Definition: itkAddImageFilter.h:93
itk::GTest::TypedefsAndConstructors::Dimension2::SizeType
ImageBaseType::SizeType SizeType
Definition: itkGTestTypedefsAndConstructors.h:49
itkImage.h
itkValuedRegionalMinimaImageFilter.h
itk::GTest::TypedefsAndConstructors::Dimension2::IndexType
ImageBaseType::IndexType IndexType
Definition: itkGTestTypedefsAndConstructors.h:50
itk::GTest::TypedefsAndConstructors::Dimension2::RegionType
ImageBaseType::RegionType RegionType
Definition: itkGTestTypedefsAndConstructors.h:54
itkImageFileWriter.h
itk::Size::SetSize
void SetSize(const SizeValueType val[VDimension])
Definition: itkSize.h:179
itk::ValuedRegionalMinimaImageFilter
Transforms the image so that any pixel that is not a regional minima is set to the maximum value for ...
Definition: itkValuedRegionalMinimaImageFilter.h:54
itk::Image
Templated n-dimensional image class.
Definition: itkImage.h:88
New
static Pointer New()
itk::WriteImage
ITK_TEMPLATE_EXPORT void WriteImage(TImagePointer &&image, const std::string &filename, bool compress=false)
Definition: itkImageFileWriter.h:256