void CriminisiInpainting::InitializeConfidence()
{
// Clone the mask - we need to invert the mask to actually perform the masking, but we don't want to disturb the original mask
Mask::Pointer maskClone = Mask::New();
//Helpers::DeepCopy<Mask>(this->CurrentMask, maskClone);
maskClone->DeepCopyFrom(this->CurrentMask);
// Invert the mask
typedef itk::InvertIntensityImageFilter <Mask> InvertIntensityImageFilterType;
InvertIntensityImageFilterType::Pointer invertIntensityFilter = InvertIntensityImageFilterType::New();
invertIntensityFilter->SetInput(maskClone);
//invertIntensityFilter->InPlaceOn();
invertIntensityFilter->Update();
// Convert the inverted mask to floats and scale them to between 0 and 1
// to serve as the initial confidence image
typedef itk::RescaleIntensityImageFilter< Mask, FloatScalarImageType > RescaleFilterType;
RescaleFilterType::Pointer rescaleFilter = RescaleFilterType::New();
rescaleFilter->SetInput(invertIntensityFilter->GetOutput());
rescaleFilter->SetOutputMinimum(0);
rescaleFilter->SetOutputMaximum(1);
rescaleFilter->Update();
Helpers::DeepCopy<FloatScalarImageType>(rescaleFilter->GetOutput(), this->ConfidenceImage);
//WriteImage<FloatImageType>(this->ConfidenceImage, "InitialConfidence.mhd");
}
void Mask::FindBoundary(UnsignedCharScalarImageType* boundaryImage) const
{
// Compute the "outer" boundary of the region to fill. That is, we want the boundary pixels to be in the source region.
//HelpersOutput::WriteImageConditional<Mask>(this->CurrentMask, "Debug/FindBoundary.CurrentMask.mha", this->DebugImages);
//HelpersOutput::WriteImageConditional<Mask>(this->CurrentMask, "Debug/FindBoundary.CurrentMask.png", this->DebugImages);
// Create a binary image (throw away the "dont use" pixels)
Mask::Pointer holeOnly = Mask::New();
holeOnly->DeepCopyFrom(this);
itk::ImageRegionIterator<Mask> maskIterator(holeOnly, holeOnly->GetLargestPossibleRegion());
// This should result in a white hole on a black background
while(!maskIterator.IsAtEnd())
{
itk::Index<2> currentPixel = maskIterator.GetIndex();
if(!holeOnly->IsHole(currentPixel))
{
holeOnly->SetPixel(currentPixel, holeOnly->GetValidValue());
}
++maskIterator;
}
//HelpersOutput::WriteImageConditional<Mask>(holeOnly, "Debug/FindBoundary.HoleOnly.mha", this->DebugImages);
//HelpersOutput::WriteImageConditional<Mask>(holeOnly, "Debug/FindBoundary.HoleOnly.png", this->DebugImages);
// Since the hole is white, we want the foreground value of the contour filter to be black. This means that the boundary will
// be detected in the black pixel region, which is on the outside edge of the hole like we want. However,
// The BinaryContourImageFilter will change all non-boundary pixels to the background color, so the resulting output will be inverted -
// the boundary pixels will be black and the non-boundary pixels will be white.
// Find the boundary
typedef itk::BinaryContourImageFilter <Mask, Mask> binaryContourImageFilterType;
binaryContourImageFilterType::Pointer binaryContourFilter = binaryContourImageFilterType::New();
binaryContourFilter->SetInput(holeOnly);
binaryContourFilter->SetFullyConnected(true);
binaryContourFilter->SetForegroundValue(holeOnly->GetValidValue());
binaryContourFilter->SetBackgroundValue(holeOnly->GetHoleValue());
binaryContourFilter->Update();
//HelpersOutput::WriteImageConditional<Mask>(binaryContourFilter->GetOutput(), "Debug/FindBoundary.Boundary.mha", this->DebugImages);
//HelpersOutput::WriteImageConditional<Mask>(binaryContourFilter->GetOutput(), "Debug/FindBoundary.Boundary.png", this->DebugImages);
// Since we want to interpret non-zero pixels as boundary pixels, we must invert the image.
typedef itk::InvertIntensityImageFilter <Mask> InvertIntensityImageFilterType;
InvertIntensityImageFilterType::Pointer invertIntensityFilter = InvertIntensityImageFilterType::New();
invertIntensityFilter->SetInput(binaryContourFilter->GetOutput());
invertIntensityFilter->SetMaximum(255);
invertIntensityFilter->Update();
//this->BoundaryImage = binaryContourFilter->GetOutput();
//this->BoundaryImage->Graft(binaryContourFilter->GetOutput());
ITKHelpers::DeepCopy<UnsignedCharScalarImageType>(invertIntensityFilter->GetOutput(), boundaryImage);
//HelpersOutput::WriteImageConditional<UnsignedCharScalarImageType>(this->BoundaryImage, "Debug/FindBoundary.BoundaryImage.mha", this->DebugImages);
}
bool AcceptMatch(VertexDescriptorType target, VertexDescriptorType source, float& computedEnergy) const
{
//std::cout << "DilatedVarianceDifferenceAcceptanceVisitor::AcceptMatch" << std::endl;
itk::Index<2> targetPixel = ITKHelpers::CreateIndex(target);
itk::ImageRegion<2> targetRegion = ITKHelpers::GetRegionInRadiusAroundPixel(targetPixel, HalfWidth);
itk::Index<2> sourcePixel = ITKHelpers::CreateIndex(source);
itk::ImageRegion<2> sourceRegion = ITKHelpers::GetRegionInRadiusAroundPixel(sourcePixel, HalfWidth);
// Compute the functor on the pixels in the region just inside the hole in the source patch
typename TypeTraits<typename TImage::PixelType>::LargerType sourceValue;
{
Mask::Pointer originalHole = Mask::New();
ITKHelpers::ExtractRegion(MaskImage, targetRegion, originalHole.GetPointer());
Mask::Pointer shrunkHole = Mask::New();
shrunkHole->DeepCopyFrom(originalHole);
shrunkHole->ShrinkHole(5);
typedef itk::Image<bool, 2> BoolImage;
BoolImage::Pointer holeRindImage = BoolImage::New(); // "rind" like an "orange rind"
ITKHelpers::XORRegions(originalHole.GetPointer(), originalHole->GetLargestPossibleRegion(),
shrunkHole.GetPointer(), shrunkHole->GetLargestPossibleRegion(), holeRindImage.GetPointer());
std::vector<itk::Index<2> > holeRindPixels = ITKHelpers::GetPixelsWithValue(holeRindImage.GetPointer(), holeRindImage->GetLargestPossibleRegion(), true);
itk::Index<2> zeroIndex = {{0,0}};
std::vector<itk::Offset<2> > holeRindOffsets = ITKHelpers::IndicesToOffsets(holeRindPixels, zeroIndex);
std::vector<itk::Index<2> > sourceRindPixelIndices = ITKHelpers::OffsetsToIndices(holeRindOffsets, sourceRegion.GetIndex());
std::vector<typename TImage::PixelType> sourceRindPixels = ITKHelpers::GetPixelValues(Image, sourceRindPixelIndices);
sourceValue = Functor(sourceRindPixels);
}
// Compute the functor on the pixels in the region just outside the hole in the target patch
typename TypeTraits<typename TImage::PixelType>::LargerType targetValue;
{
Mask::Pointer originalHole = Mask::New();
ITKHelpers::ExtractRegion(MaskImage, targetRegion, originalHole.GetPointer());
Mask::Pointer expandedHole = Mask::New();
expandedHole->DeepCopyFrom(originalHole);
expandedHole->ExpandHole(5);
typedef itk::Image<bool, 2> BoolImage;
BoolImage::Pointer validRindImage = BoolImage::New(); // "rind" like an "orange rind"
ITKHelpers::XORRegions(originalHole.GetPointer(), originalHole->GetLargestPossibleRegion(),
expandedHole.GetPointer(), expandedHole->GetLargestPossibleRegion(), validRindImage.GetPointer());
std::vector<itk::Index<2> > validRindPixels = ITKHelpers::GetPixelsWithValue(validRindImage.GetPointer(), validRindImage->GetLargestPossibleRegion(), true);
itk::Index<2> zeroIndex = {{0,0}};
std::vector<itk::Offset<2> > validRindOffsets = ITKHelpers::IndicesToOffsets(validRindPixels, zeroIndex);
std::vector<itk::Index<2> > targetRindPixelIndices = ITKHelpers::OffsetsToIndices(validRindOffsets, targetRegion.GetIndex());
std::vector<typename TImage::PixelType> targetRindPixels = ITKHelpers::GetPixelValues(Image, targetRindPixelIndices);
targetValue = Functor(targetRindPixels);
}
// Compute the difference
computedEnergy = (targetValue - sourceValue).GetNorm();
//std::cout << this->VisitorName << " Energy: " << computedEnergy << std::endl;
if(computedEnergy < DifferenceThreshold)
{
std::cout << this->VisitorName << ": Match accepted (" << computedEnergy << " is less than " << DifferenceThreshold << ")" << std::endl << std::endl;
return true;
}
else
{
std::cout << this->VisitorName << ": Match rejected (" << computedEnergy << " is greater than " << DifferenceThreshold << ")" << std::endl << std::endl;
return false;
}
};