tools/clitkPadImage.cxx

   1 #include "itkImage.h"
   2 #include "itkImageFileReader.h"
   3 #include "itkImageFileWriter.h"
   4 #include "itkConstantPadImageFilter.h"
   5 #include "clitkCommon.h"
   6 #include "clitkPadImage_ggo.h"
   7 #include <string>
   8
   9 enum
  10 {
  11   ERR_SUCCESS = 0,
  12   ERR_NOT_SAME_SPACING = -1,
  13   ERR_NOT_LIKE_LARGER = -2
  14 };
  15
  16 typedef unsigned int DimType;
  17
  18 template <class ImageType, class PadBoundType, DimType dim>
  19 int pad_like(typename ImageType::Pointer input, const std::string& likeFile, PadBoundType* padLower, PadBoundType* padUpper)
  20 {
  21   typedef typename ImageType::SpacingType SpacingType;
  22   typedef typename ImageType::RegionType RegionType;
  23   typedef typename ImageType::SizeType SizeType;
  24   typedef typename ImageType::IndexType IndexType;
  25   typedef typename ImageType::PointType PointType;
  26   typedef typename ImageType::PointValueType PointValueType;
  27
  28   typedef itk::ImageFileReader<ImageType> ImageReaderType;
  29   typename ImageReaderType::Pointer reader = ImageReaderType::New();
  30   reader->SetFileName(likeFile);
  31   reader->Update();
  32
  33   typename ImageType::Pointer like_image = reader->GetOutput();
  34
  35   SpacingType spacing = input->GetSpacing(), like_spacing = like_image->GetSpacing();
  36   if (spacing != like_spacing) {
  37     std::cerr << "Like-image must have same spacing as input: " << spacing << " " << like_spacing << std::endl;
  38     return ERR_NOT_SAME_SPACING;
  39   }
  40
  41   SizeType size = input->GetLargestPossibleRegion().GetSize(), like_size = like_image->GetLargestPossibleRegion().GetSize();
  42   PointType origin = input->GetOrigin(), like_origin = like_image->GetOrigin();
  43
  44   PointType lower_bound, like_lower_bound;
  45   PointType upper_bound, like_upper_bound;
  46   PointValueType auxl = 0, auxu = 0;
  47   for (DimType i = 0; i < dim; i++) {
  48     lower_bound[i] = origin[i];
  49     like_lower_bound[i] = like_origin[i];
  50     auxl = round(((lower_bound[i] - like_lower_bound[i])/spacing[i]));
  51
  52     upper_bound[i] = (lower_bound[i] + size[i]*spacing[i]);
  53     like_upper_bound[i] = (like_lower_bound[i] + like_size[i]*spacing[i]);
  54     auxu = round(((like_upper_bound[i] - upper_bound[i])/spacing[i]));
  55
  56     if (auxl < 0 || auxu < 0) {
  57       std::cerr << "Like-image's bounding box must be larger than input's" << std::endl;
  58       return ERR_NOT_LIKE_LARGER;
  59     }
  60
  61     padLower[i] = (PadBoundType)auxl;
  62     padUpper[i] = (PadBoundType)auxu;
  63   }
  64
  65   return ERR_SUCCESS;
  66 }
  67
  68 int main(int argc, char** argv)
  69 {
  70   const DimType dim = 3;
  71   typedef short PixelType;
  72   typedef itk::Image<PixelType, dim> ImageType;
  73   typedef itk::ImageFileReader<ImageType> ImageReaderType;
  74   typedef itk::ImageFileWriter<ImageType> ImageWriterType;
  75   typedef itk::ConstantPadImageFilter<ImageType, ImageType> PadFilterType;
  76   typedef typename PadFilterType::SizeValueType PadBoundType;
  77
  78   GGO(clitkPadImage, args_info);
  79
  80   typename ImageReaderType::Pointer reader = ImageReaderType::New();
  81   reader->SetFileName(args_info.input_arg);
  82   reader->Update();
  83
  84   PadBoundType pad_lower[dim], pad_upper[dim];
  85   typename ImageType::Pointer input = reader->GetOutput();
  86   if (args_info.like_given) {
  87     int err = pad_like<ImageType, PadBoundType, dim>(input, args_info.like_arg, pad_lower, pad_upper);
  88     if (err) {
  89       std::cerr << "Error processing like image." << std::endl;
  90       return err;
  91     }
  92   }
  93   else {
  94     for (DimType i = 0; i < dim; i++) {
  95       pad_lower[i] = args_info.lower_arg[i];
  96       pad_upper[i] = args_info.upper_arg[i];
  97     }
  98   }
  99
 100   typename PadFilterType::Pointer filter = PadFilterType::New();
 101   filter->SetPadLowerBound(pad_lower);
 102   filter->SetPadUpperBound(pad_upper);
 103   filter->SetInput(input);
 104   filter->SetConstant(args_info.value_arg);
 105   filter->Update();
 106
 107   typename ImageType::Pointer output = filter->GetOutput();
 108   typename ImageWriterType::Pointer writer = ImageWriterType::New();
 109   writer->SetInput(output);
 110   writer->SetFileName(args_info.output_arg);
 111   writer->Update();
 112
 113   return ERR_SUCCESS;
 114 }
 115