ITK  5.3.0
Insight Toolkit
SphinxExamples/src/Core/Common/DisplayImage/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
*
* 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 "itkImage.h"
#ifdef ENABLE_QUICKVIEW
# include "QuickView.h"
#endif
using ImageType = itk::Image<unsigned char, 2>;
static void
CreateImage(ImageType * const image);
int
main(int argc, char * argv[])
{
ImageType::Pointer image;
if (argc < 2)
{
// std::cerr << "Required: filename" << std::endl;
// return EXIT_FAILURE;
image = ImageType::New();
CreateImage(image);
}
else
{
using ReaderType = itk::ImageFileReader<ImageType>;
ReaderType::Pointer reader = ReaderType::New();
reader->SetFileName(argv[1]);
image = reader->GetOutput();
}
RescaleFilterType::Pointer rescaleFilter = RescaleFilterType::New();
rescaleFilter->SetInput(image);
rescaleFilter->SetOutputMinimum(0);
rescaleFilter->SetOutputMaximum(255);
rescaleFilter->Update();
#ifdef ENABLE_QUICKVIEW
QuickView viewer;
viewer.AddImage(image.GetPointer());
viewer.AddImage(rescaleFilter->GetOutput());
viewer.Visualize();
#endif
return EXIT_SUCCESS;
}
void
CreateImage(ImageType * const image)
{
// Create an image with 2 connected components
ImageType::IndexType corner = { { 0, 0 } };
unsigned int NumRows = 200;
unsigned int NumCols = 300;
size[0] = NumRows;
size[1] = NumCols;
ImageType::RegionType region(corner, size);
image->SetRegions(region);
image->Allocate();
// Make a square
for (unsigned int r = 40; r < 100; r++)
{
for (unsigned int c = 40; c < 100; c++)
{
pixelIndex[0] = r;
pixelIndex[1] = c;
image->SetPixel(pixelIndex, 15);
}
}
}
itkImageFileReader.h
itk::GTest::TypedefsAndConstructors::Dimension2::SizeType
ImageBaseType::SizeType SizeType
Definition: itkGTestTypedefsAndConstructors.h:49
itkImage.h
itk::ImageFileReader
Data source that reads image data from a single file.
Definition: itkImageFileReader.h:75
itk::GTest::TypedefsAndConstructors::Dimension2::IndexType
ImageBaseType::IndexType IndexType
Definition: itkGTestTypedefsAndConstructors.h:50
QuickView.h
QuickView::AddImage
void AddImage(TImage *, bool FlipVertical=true, std::string Description="")
itk::GTest::TypedefsAndConstructors::Dimension2::RegionType
ImageBaseType::RegionType RegionType
Definition: itkGTestTypedefsAndConstructors.h:54
itkRescaleIntensityImageFilter.h
QuickView
A convenient class to render itk images with vtk.
Definition: QuickView.h:111
itk::RescaleIntensityImageFilter
Applies a linear transformation to the intensity levels of the input Image.
Definition: itkRescaleIntensityImageFilter.h:154
itk::Image
Templated n-dimensional image class.
Definition: itkImage.h:86
QuickView::Visualize
void Visualize(bool interact=true)