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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 "itkHardConnectedComponentImageFilter.h"
#include "itkSimpleFilterWatcher.h"
#include "itkImageFileWriter.h"
#include "itkTestingMacros.h"
template <typename TPixel>
int
DoIt(int argc, char * argv[], const std::string pixelType)
{
if (argc < 2)
{
std::cerr << "Usage: " << itkNameOfTestExecutableMacro(argv) << " outputImagePrefix" << std::endl;
return EXIT_FAILURE;
}
const char * outputImageFileName = argv[1];
constexpr int height = 20;
constexpr int width = 20;
constexpr unsigned int Dimension = 2;
using PixelType = TPixel;
using InputImageType = itk::Image<bool, Dimension>;
using OutputImageType = itk::Image<PixelType, Dimension>;
using IndexType = typename InputImageType::IndexType;
auto inputimg = InputImageType::New();
IndexType index;
index.Fill(0);
typename InputImageType::RegionType region;
typename InputImageType::SizeType size;
size[0] = width;
size[1] = height;
region.SetSize(size);
region.SetIndex(index);
inputimg->SetRegions(region);
inputimg->Allocate();
int row, col;
IndexType myIndex;
for (row = 0; row < 20; ++row)
{
for (col = 0; col < 20; ++col)
{
myIndex[1] = row;
myIndex[0] = col;
inputimg->SetPixel(myIndex, false);
}
}
for (row = 0; row < 15; ++row)
{
for (col = 0; col < 20; ++col)
{
myIndex[1] = row;
myIndex[0] = col;
inputimg->SetPixel(myIndex, true);
}
}
for (row = 0; row < 10; ++row)
{
for (col = 5; col < 15; ++col)
{
myIndex[1] = row;
myIndex[0] = col;
inputimg->SetPixel(myIndex, false);
}
}
for (row = 0; row < 7; ++row)
{
for (col = 7; col < 12; ++col)
{
myIndex[1] = row;
myIndex[0] = col;
inputimg->SetPixel(myIndex, true);
}
}
// InputImageType::IndexType Seed = {10,2};
using FilterType = itk::HardConnectedComponentImageFilter<InputImageType, OutputImageType>;
auto filter = FilterType::New();
itk::SimpleFilterWatcher watcher(filter);
filter->SetInput(inputimg);
// filter->SetObjectSeed(Seed);
filter->Update();
using inputIterator = itk::ImageRegionIterator<InputImageType>;
inputIterator it(inputimg, region);
std::cout << "Input Image" << std::endl;
it.GoToBegin();
for (int i = 0; i < height * width; ++i)
{
if ((i % width) == 0)
{
std::cout << std::endl;
}
std::cout << (it.Get() ? 1 : 0);
++it;
}
std::cout << std::endl;
using outputIterator = itk::ImageRegionIterator<OutputImageType>;
outputIterator ot(filter->GetOutput(), region);
std::cout << std::endl << "Output Image" << std::endl;
ot.GoToBegin();
for (int i = 0; i < height * width; ++i)
{
if ((i % width) == 0)
{
std::cout << std::endl;
}
std::cout << ot.Get();
++ot;
}
std::cout << std::endl;
using WriterType = itk::ImageFileWriter<OutputImageType>;
auto writer = WriterType::New();
writer->SetFileName(std::string(outputImageFileName) + pixelType + ".png");
writer->SetInput(filter->GetOutput());
try
{
writer->Update();
}
catch (const itk::ExceptionObject & error)
{
std::cerr << "Error: " << error << std::endl;
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
int
itkHardConnectedComponentImageFilterTest(int argc, char * argv[])
{
return DoIt<unsigned char>(argc, argv, "UnsignedChar") || DoIt<unsigned short>(argc, argv, "UnsignedShort");
}
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