// use libjpeg-turbo for JPEG conversion
void computeJpeg( SegmentCompressionWrapper& task )
{
QRect imageRegion( task.segment.parameters.x - task.image->x,
task.segment.parameters.y - task.image->y,
task.segment.parameters.width,
task.segment.parameters.height );
ImageJpegCompressor compressor;
task.segment.imageData = compressor.computeJpeg( *task.image, imageRegion );
if( !task.handler( task.segment ))
*task.result = false;
}
bool TestCreateLuminanceImage()
{
// From RGB image
{
itk::Index<2> imageCorner = {{0,0}};
itk::Size<2> imageSize = {{100,100}};
itk::ImageRegion<2> imageRegion(imageCorner, imageSize);
typedef itk::Image<itk::RGBPixel<unsigned char>, 2> RGBImageType;
RGBImageType::Pointer rgbImage = RGBImageType::New();
rgbImage->SetRegions(imageRegion);
rgbImage->Allocate();
typedef itk::Image<float, 2> LuminanceImageType;
LuminanceImageType::Pointer luminanceImage = LuminanceImageType::New();
ITKHelpers::CreateLuminanceImage(rgbImage.GetPointer(), luminanceImage.GetPointer());
}
// From Vector image
{
itk::Index<2> imageCorner = {{0,0}};
itk::Size<2> imageSize = {{100,100}};
itk::ImageRegion<2> imageRegion(imageCorner, imageSize);
typedef itk::Image<itk::CovariantVector<unsigned char, 3>, 2> VectorImageType;
VectorImageType::Pointer vectorImage = VectorImageType::New();
vectorImage->SetRegions(imageRegion);
vectorImage->Allocate();
typedef itk::Image<float, 2> LuminanceImageType;
LuminanceImageType::Pointer luminanceImage = LuminanceImageType::New();
ITKHelpers::CreateLuminanceImage(vectorImage.GetPointer(), luminanceImage.GetPointer());
}
return true;
}
void TestGetAllPatchesContainingPixel()
{
typedef itk::Image<float, 2> ImageType;
ImageType::Pointer image = ImageType::New();
itk::Index<2> corner = {{0,0}};
itk::Size<2> size = {{10,10}};
itk::ImageRegion<2> imageRegion(corner,size);
image->SetRegions(imageRegion);
image->Allocate();
image->FillBuffer(0.0f);
itk::Index<2> queryPixel = {{5,5}};
std::vector<itk::ImageRegion<2> > allPatches =
ITKHelpers::GetAllPatchesContainingPixel(queryPixel, 1, imageRegion);
std::cout << "Number of patches " << allPatches.size() << std::endl;
}
bool TestComputeGradientsInRegion()
{
itk::Index<2> imageCorner = {{0,0}};
itk::Size<2> imageSize = {{100,100}};
itk::ImageRegion<2> imageRegion(imageCorner, imageSize);
typedef itk::Image<unsigned char, 2> ImageType;
ImageType::Pointer image = ImageType::New();
image->SetRegions(imageRegion);
image->Allocate();
itk::ImageRegionIterator<ImageType> imageIterator(image, image->GetLargestPossibleRegion());
while(!imageIterator.IsAtEnd())
{
imageIterator.Set(rand() % 255);
++imageIterator;
}
ITKHelpers::WriteImage(image.GetPointer(), "Image.mha");
itk::Index<2> regionCorner = {{50,50}};
itk::Size<2> regionSize = {{10,10}};
itk::ImageRegion<2> region(regionCorner, regionSize);
typedef itk::Image<itk::CovariantVector<float, 2>, 2> GradientImageType;
GradientImageType::Pointer gradientImage = GradientImageType::New();
std::cout << "Computing gradients..." << std::endl;
ITKHelpers::ComputeGradientsInRegion(image.GetPointer(), region, gradientImage.GetPointer());
std::cout << "Writing..." << std::endl;
ITKHelpers::WriteImage(gradientImage.GetPointer(), "GradientImage.mha");
return true;
}