1 #ifndef CLITKIMAGERESAMPLEGENERICFILTER_TXX
2 #define CLITKIMAGERESAMPLEGENERICFILTER_TXX
5 ------------------------------------------------=
6 * @file clitkImageResampleGenericFilter.txx
7 * @author David Sarrut <david.sarrut@creatis.insa-lyon.fr>
8 * @date 23 Feb 2008 08:40:11
13 ------------------------------------------------=*/
15 //--------------------------------------------------------------------
16 template<unsigned int Dim>
17 void ImageResampleGenericFilter::Update_WithDim() {
19 #define TRY_TYPE(TYPE) \
20 if (IsSameType<TYPE>(mPixelTypeName)) { Update_WithDimAndPixelType<Dim, TYPE>(); return; }
21 TRY_TYPE(signed char);
26 TRY_TYPE(unsigned int);
31 std::string list = CreateListOfTypes<char, uchar, short, ushort, int, float, double>();
32 std::cerr << "Error, I don't know the type '" << mPixelTypeName << "' for the input image '"
33 << mInputFilenames[0] << "'." << std::endl << "Known types are " << list << std::endl;
36 //--------------------------------------------------------------------
38 //--------------------------------------------------------------------
39 template<unsigned int Dim, class PixelType>
40 void ImageResampleGenericFilter::Update_WithDimAndPixelType() {
42 typedef itk::Image<PixelType,Dim> ImageType;
43 //typename ImageType::Pointer input = clitk::readImage<ImageType>(mInputFilenames, mIOVerbose);
44 typename ImageType::Pointer input = this->GetInput<ImageType>(0);
47 typename ImageType::Pointer outputImage = ComputeImage<ImageType>(input);
50 this->SetNextOutput<ImageType>(outputImage);
51 //clitk::writeImage<ImageType>(outputImage, mOutputFilename, mIOVerbose);
53 //--------------------------------------------------------------------
55 //--------------------------------------------------------------------
56 template<class ImageType>
57 typename ImageType::Pointer
58 ImageResampleGenericFilter::ComputeImage(typename ImageType::Pointer inputImage) {
61 if (!std::numeric_limits<typename ImageType::PixelType>::is_signed) {
62 if ((mInterpolatorName == "bspline") || (mInterpolatorName == "blut")) {
63 std::cerr << "Warning : input pixel type is not signed, use bspline interpolation at your own risk ..." << std::endl;
68 static unsigned int dim = ImageType::ImageDimension;
69 if (mOutputSize.size() != dim) {
70 std::cerr << "Please set size with " << dim << " dimensions." << std::endl;
73 if (mOutputSpacing.size() != dim) {
74 std::cerr << "Please set spacing with " << dim << " dimensions." << std::endl;
77 mOutputOrigin.resize(dim);
79 if (mApplyGaussianFilterBefore && mSigma.size() != dim) {
80 std::cerr << "Please set sigma with " << dim << " dimensions." << std::endl;
85 typedef typename ImageType::SizeType SizeType;
86 typedef typename ImageType::SpacingType SpacingType;
87 typedef typename ImageType::PointType PointType;
90 // Create Image Filter
91 typedef itk::ResampleImageFilter<ImageType,ImageType> FilterType;
92 typename FilterType::Pointer filter = FilterType::New();
94 // Instance of the transform object to be passed to the resample
95 // filter. By default, identity transform is applied
96 typedef itk::AffineTransform<double, ImageType::ImageDimension> TransformType;
97 typename TransformType::Pointer transform = TransformType::New();
98 filter->SetTransform(transform);
100 // Set filter's parameters
102 SpacingType outputSpacing;
103 PointType outputOrigin;
104 for(unsigned int i=0; i<ImageType::ImageDimension; i++) {
105 outputSize[i] = mOutputSize[i];
106 outputSpacing[i] = mOutputSpacing[i];
107 outputOrigin[i] = inputImage->GetOrigin()[i];
110 filter->SetSize(outputSize);
111 filter->SetOutputSpacing(outputSpacing);
112 filter->SetOutputOrigin(outputOrigin);
113 filter->SetDefaultPixelValue(static_cast<typename ImageType::PixelType>(mDefaultPixelValue));//DS TODO//JV comme ça?
115 // Select interpolator
116 if (mInterpolatorName == "nn") {
117 typedef itk::NearestNeighborInterpolateImageFunction<ImageType, double> InterpolatorType;
118 typename InterpolatorType::Pointer interpolator = InterpolatorType::New();
119 filter->SetInterpolator(interpolator);
122 if (mInterpolatorName == "linear") {
123 typedef itk::LinearInterpolateImageFunction<ImageType, double> InterpolatorType;
124 typename InterpolatorType::Pointer interpolator = InterpolatorType::New();
125 filter->SetInterpolator(interpolator);
128 if (mInterpolatorName == "bspline") {
129 typedef itk::BSplineInterpolateImageFunction<ImageType, double> InterpolatorType;
130 typename InterpolatorType::Pointer interpolator = InterpolatorType::New();
131 interpolator->SetSplineOrder(mBSplineOrder);
132 filter->SetInterpolator(interpolator);
135 if (mInterpolatorName == "blut") {
136 typedef itk::BSplineInterpolateImageFunctionWithLUT<ImageType, double> InterpolatorType;
137 typename InterpolatorType::Pointer interpolator = InterpolatorType::New();
138 interpolator->SetSplineOrder(mBSplineOrder);
139 interpolator->SetLUTSamplingFactor(mSamplingFactors[0]);
140 filter->SetInterpolator(interpolator);
143 std::cerr << "Sorry, I do not know the interpolator '" << mInterpolatorName
144 << "'. Known interpolators are : nn, linear, bspline, blut" << std::endl;
151 // Build initial Gaussian bluring (if needed)
152 typedef itk::RecursiveGaussianImageFilter<ImageType, ImageType> GaussianFilterType;
153 std::vector<typename GaussianFilterType::Pointer> gaussianFilters;
154 if (mApplyGaussianFilterBefore) {
155 for(unsigned int i=0; i<ImageType::ImageDimension; i++) {
157 gaussianFilters.push_back(GaussianFilterType::New());
159 gaussianFilters[i]->SetDirection(i);
160 gaussianFilters[i]->SetOrder(GaussianFilterType::ZeroOrder);
161 gaussianFilters[i]->SetNormalizeAcrossScale(false);
162 gaussianFilters[i]->SetSigma(mSigma[i]); // in millimeter !
164 if (i==0) gaussianFilters[i]->SetInput(inputImage);
165 else gaussianFilters[i]->SetInput(gaussianFilters[i-1]->GetOutput());
167 filter->SetInput(gaussianFilters[ImageType::ImageDimension-1]->GetOutput());
170 filter->SetInput(inputImage);
177 catch( itk::ExceptionObject & err ) {
178 std::cerr << "Error while filtering " << mInputFilenames[0].c_str()
179 << " " << err << std::endl;
184 return filter->GetOutput();
187 //--------------------------------------------------------------------
191 #endif /* end #define CLITKIMAGERESAMPLEGENERICFILTER_TXX */