void LidarSegmentationWidget::on_action_View_DepthImage_triggered() { //Helpers::ITKImageChannelToVTKImage(thresholdFilter->GetOutput(), 3, this->OriginalImageData); typedef itk::Image<ImageType::InternalPixelType, 2> ScalarImageType; ScalarImageType::Pointer depthImage = ScalarImageType::New(); ITKHelpers::ExtractChannel(this->Image.GetPointer(), 3, depthImage.GetPointer()); typedef itk::ThresholdImageFilter<ScalarImageType> ThresholdImageFilterType; float maxDepth = 20.0f; ThresholdImageFilterType::Pointer thresholdFilter = ThresholdImageFilterType::New(); thresholdFilter->SetInput(depthImage); thresholdFilter->ThresholdAbove(maxDepth); thresholdFilter->SetOutsideValue(maxDepth); thresholdFilter->Update(); ITKVTKHelpers::ITKScalarImageToScaledVTKImage(thresholdFilter->GetOutput(), this->OriginalImageData); Refresh(); }
int main(int argc, char *argv[]) { unsigned int t = time(NULL); srand(t); itk::Size<2> size; size.Fill(10); itk::Index<2> index; index.Fill(0); itk::ImageRegion<2> region(index, size); /* // Generate a random image (this method doesn't work with VectorImage) itk::RandomImageSource<FloatVectorImageType>::Pointer imageSource = itk::RandomImageSource<FloatVectorImageType>::New(); imageSource->SetNumberOfThreads(1); // to produce non-random results imageSource->SetSize(size); imageSource->SetMin(0); imageSource->SetMax(100); imageSource->Update(); FloatVectorImageType::Pointer image = imageSource->GetOutput(); */ // Generate a random image FloatVectorImageType::Pointer image = FloatVectorImageType::New(); image->SetRegions(region); image->SetNumberOfComponentsPerPixel(3); image->Allocate(); { itk::ImageRegionIterator<FloatVectorImageType> imageIterator(image, image->GetLargestPossibleRegion()); while(!imageIterator.IsAtEnd()) { FloatVectorImageType::PixelType pixel; pixel.SetSize(3); pixel[0] = RandomFloat(); pixel[1] = RandomFloat(); pixel[2] = RandomFloat(); imageIterator.Set(pixel); ++imageIterator; } } // Write the image itk::ImageFileWriter<FloatVectorImageType>::Pointer imageWriter = itk::ImageFileWriter<FloatVectorImageType>::New(); imageWriter->SetFileName("image.mha"); imageWriter->SetInput(image); imageWriter->Update(); // Generate a random mask itk::RandomImageSource<Mask>::Pointer maskSource = itk::RandomImageSource<Mask>::New(); maskSource->SetNumberOfThreads(1); // to produce non-random results maskSource->SetSize(size); maskSource->SetMin(0); maskSource->SetMax(255); maskSource->Update(); // Threshold the mask //typedef itk::ThresholdImageFilter <UnsignedCharImageType> ThresholdImageFilterType; typedef itk::BinaryThresholdImageFilter <Mask, Mask> ThresholdImageFilterType; ThresholdImageFilterType::Pointer thresholdFilter = ThresholdImageFilterType::New(); thresholdFilter->SetInput(maskSource->GetOutput()); thresholdFilter->SetLowerThreshold(0); thresholdFilter->SetUpperThreshold(122); thresholdFilter->SetOutsideValue(1); thresholdFilter->SetInsideValue(0); thresholdFilter->Update(); Mask::Pointer mask = thresholdFilter->GetOutput(); // Write the mask itk::ImageFileWriter<Mask>::Pointer maskWriter = itk::ImageFileWriter<Mask>::New(); maskWriter->SetFileName("mask.png"); maskWriter->SetInput(mask); maskWriter->Update(); unsigned int patchRadius = 1; // Create source patches itk::ImageRegionConstIterator<FloatVectorImageType> imageIterator(image, image->GetLargestPossibleRegion()); std::vector<itk::ImageRegion<2> > sourcePatches; while(!imageIterator.IsAtEnd()) { itk::Index<2> currentPixel = imageIterator.GetIndex(); itk::ImageRegion<2> region = GetRegionInRadiusAroundPixel(currentPixel, patchRadius); if(image->GetLargestPossibleRegion().IsInside(region)) { sourcePatches.push_back(region); } ++imageIterator; } itk::Size<2> targetSize; targetSize.Fill(patchRadius * 2 + 1); itk::Index<2> targetIndex; targetIndex.Fill(3); itk::ImageRegion<2> targetRegion(targetIndex, targetSize); SelfPatchCompare patchCompare; patchCompare.SetImage(image); patchCompare.SetMask(mask); patchCompare.SetSourceRegions(sourcePatches); patchCompare.SetTargetRegion(targetRegion); patchCompare.ComputeOffsets(); //unsigned int bestMatchSourcePatchId = patchCompare.FindBestPatch(); //std::cout << "bestMatchSourcePatchId: " << bestMatchSourcePatchId << std::endl; unsigned int patchId = 1; float slowPatchDifference = patchCompare.SlowDifference(sourcePatches[patchId]); std::cout << "slowPatchDifference: " << slowPatchDifference << std::endl; float fastPatchDifference = patchCompare.PatchDifference(sourcePatches[patchId]); std::cout << "fastPatchDifference: " << fastPatchDifference << std::endl; unsigned int iterations = 1e6; itk::TimeProbe slowTimer; slowTimer.Start(); for(unsigned int i = 0; i < iterations; ++i) { float slowPatchDifference = patchCompare.SlowDifference(sourcePatches[patchId]); } slowTimer.Stop(); std::cout << "Slow Total: " << slowTimer.GetTotal() << std::endl; itk::TimeProbe fastTimer; fastTimer.Start(); for(unsigned int i = 0; i < iterations; ++i) { float fastPatchDifference = patchCompare.PatchDifference(sourcePatches[patchId]); } fastTimer.Stop(); std::cout << "Fast Total: " << fastTimer.GetTotal() << std::endl; return EXIT_SUCCESS; }