vv/vvMeshReader.cxx

   1 /*=========================================================================
   2   Program:   vv                     http://www.creatis.insa-lyon.fr/rio/vv
   3
   4   Authors belong to:
   5   - University of LYON              http://www.universite-lyon.fr/
   6   - Léon Bérard cancer center       http://oncora1.lyon.fnclcc.fr
   7   - CREATIS CNRS laboratory         http://www.creatis.insa-lyon.fr
   8
   9   This software is distributed WITHOUT ANY WARRANTY; without even
  10   the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
  11   PURPOSE.  See the copyright notices for more information.
  12
  13   It is distributed under dual licence
  14
  15   - BSD        See included LICENSE.txt file
  16   - CeCILL-B   http://www.cecill.info/licences/Licence_CeCILL-B_V1-en.html
  17 ======================================================================-====*/
  18 #include <algorithm>
  19
  20 #include <QApplication>
  21
  22 #include <gdcmFile.h>
  23 #if GDCM_MAJOR_VERSION == 2
  24 #else
  25 #include <gdcm.h>
  26 #include <gdcmSQItem.h>
  27 #endif
  28
  29 #include <vtkSmartPointer.h>
  30 #include <vtkAppendPolyData.h>
  31 #include <vtkCellArray.h>
  32 #include <vtkMetaImageWriter.h>
  33 #include <vtkMetaImageReader.h>
  34 #include <vtkPolyDataWriter.h>
  35 #include <vtkImageData.h>
  36 #include <vtkImageCast.h>
  37 #include <vtkImageGaussianSmooth.h>
  38
  39 #include "clitkCommon.h"
  40 #include "vvMeshReader.h"
  41 #include "vvProgressDialog.h"
  42 #include <clitkCommon.h>
  43
  44 vvMeshReader::vvMeshReader() :
  45   vtk_mode(false)
  46 {}
  47
  48 void vvMeshReader::Update()
  49 {
  50   //Show a progress bar only when opening a DC-struct (ie. multiple contours)
  51   vvProgressDialog progress("Opening " + filename,(!vtk_mode) && (selected_contours.size()>1));
  52   this->start();
  53   while (this->isRunning()) {
  54     progress.SetProgress(result.size(),selected_contours.size());
  55     this->wait(50);
  56     qApp->processEvents();
  57   }
  58 }
  59
  60 void vvMeshReader::run()
  61 {
  62   ///Verify the important stuff has been set
  63   assert(filename != "");
  64   if (vtk_mode) { //Read vtkPolyData
  65     vvMesh::Pointer m=vvMesh::New();
  66     m->ReadFromVTK(filename.c_str());
  67     if (vf) m->propagateContour(vf);
  68     m->ComputeMasks(image->GetVTKImages()[0],false); //don't extrude the contour
  69     result.push_back(m);
  70   } else { //Read a Dicom-struct file
  71     assert(selected_contours.size() > 0);
  72     assert(image);
  73     std::vector<vvMesh::Pointer> contour_stacks=readSelectedContours();
  74     for (std::vector<vvMesh::Pointer>::iterator i=contour_stacks.begin();
  75          i!=contour_stacks.end(); i++) {
  76       (*i)->ComputeMasks(image->GetVTKImages()[0],true); //Remesh the contour
  77       (*i)->ComputeMeshes();
  78       if (vf) (*i)->propagateContour(vf);
  79       result.push_back(*i);
  80     }
  81   }
  82 }
  83
  84 std::vector<std::pair<int,std::string> > vvMeshReader::GetROINames()
  85 {
  86   assert(filename!="");
  87   std::vector<std::pair<int, std::string> > roi_names;
  88 #if GDCM_MAJOR_VERSION == 2
  89 #else
  90   gdcm::File reader;
  91   reader.SetFileName(filename.c_str());
  92   reader.SetMaxSizeLoadEntry(16384);
  93   reader.Load();
  94
  95   gdcm::SeqEntry * roi_info=reader.GetSeqEntry(0x3006,0x0020);
  96   assert(roi_info);
  97   // DD("ici");
  98   //int n=0;
  99   for (gdcm::SQItem* i=roi_info->GetFirstSQItem(); i!=0; i=roi_info->GetNextSQItem())
 100     if (i->GetEntryValue(0x3006,0x0022)!= gdcm::GDCM_UNFOUND)
 101       roi_names.push_back(make_pair(atoi(i->GetEntryValue(0x3006,0x0022).c_str()),i->GetEntryValue(0x3006,0x0026)));
 102 #endif
 103   return roi_names;
 104 }
 105
 106 std::vector<vvMesh::Pointer> vvMeshReader::readSelectedContours()
 107 {
 108   std::vector<vvMesh::Pointer> result;
 109 #if GDCM_MAJOR_VERSION == 2
 110 #else
 111   gdcm::File reader;
 112   reader.SetFileName(filename.c_str());
 113   reader.SetMaxSizeLoadEntry(16384);
 114   reader.Load();
 115
 116   gdcm::SeqEntry * rois=reader.GetSeqEntry(0x3006,0x0039);
 117   ///We need to iterate both on the contours themselves, and on the contour info
 118   gdcm::SeqEntry * roi_info=reader.GetSeqEntry(0x3006,0x0020);
 119   gdcm::SQItem* k=roi_info->GetFirstSQItem();
 120   for(gdcm::SQItem* i=rois->GetFirstSQItem(); i!=0; i=rois->GetNextSQItem()) { //loop over ROIS
 121     assert(k!=0);
 122     vtkSmartPointer<vtkAppendPolyData> append=vtkSmartPointer<vtkAppendPolyData>::New();
 123     std::istringstream ss(i->GetEntryValue(0x3006,0x0084));
 124     int roi_number;
 125     ss >> roi_number;
 126     if (std::find(selected_contours.begin(),selected_contours.end(),roi_number) != selected_contours.end()) { //Only read selected ROIs
 127       vvMesh::Pointer current_roi=vvMesh::New();
 128       std::vector<double> rgb=clitk::parse_string<double>(i->GetEntryValue(0x3006,0x002a),'\\');
 129       assert(rgb.size()==3);
 130       current_roi->r=rgb[0]/255;
 131       current_roi->g=rgb[1]/255;
 132       current_roi->b=rgb[2]/255;
 133       current_roi->structure_name=k->GetEntryValue(0x3006,0x0026);
 134       gdcm::SeqEntry * contours=i->GetSeqEntry(0x3006,0x0040);
 135       double z0=-1; //Used to determine spacing between slices, assumed to be constant
 136       for(gdcm::SQItem* j=contours->GetFirstSQItem(); j!=0; j=contours->GetNextSQItem()) { //loop over 2D contours
 137         std::string contour_type=j->GetEntryValue(0x3006,0x0042);
 138         if (contour_type=="CLOSED_PLANAR ") {
 139           int point_number=clitk::parse_value<int>(j->GetEntryValue(0x3006,0x0046));
 140           std::vector<float> points=clitk::parse_string<float>(j->GetEntryValue(0x3006,0x0050),'\\');
 141           assert(points.size() == static_cast<unsigned int>(point_number)*3);
 142           if (z0 == -1) //First contour
 143             z0=points[2];
 144           //2nd contour, spacing not yet set. Need to be sure we are on a different slice,
 145           //sometimes there is more than one closed contour per slice
 146           else if (current_roi->GetSpacing()==-1 && points[2] != z0 )
 147             current_roi->SetSpacing(points[2]-z0);
 148           vtkPolyData * contour=vtkPolyData::New();
 149           contour->Allocate(); //for cell structures
 150           contour->SetPoints(vtkPoints::New());
 151           vtkIdType ids[2];
 152           for (unsigned int idx=0; idx<points.size(); idx+=3) {
 153             contour->GetPoints()->InsertNextPoint(points[idx],points[idx+1],points[idx+2]);
 154             ids[0]=idx/3;
 155             ids[1]=(ids[0]+1)%point_number; //0-1,1-2,...,n-1-0
 156             contour->GetLines()->InsertNextCell(2,ids);
 157           }
 158           append->AddInput(contour);
 159         } else if (contour_type == "POINT ")
 160           ; // silently ignore POINT type since we don't need them at the moment
 161         else
 162           std::cerr << "Warning: contour type " << contour_type << " not handled!" << std::endl;
 163       }
 164       append->Update();
 165       current_roi->AddMesh(append->GetOutput());
 166       result.push_back(current_roi);
 167     } else {
 168       //std::cerr << "Warning: ignoring ROI #" << roi_number << std::endl;
 169     }
 170     k=roi_info->GetNextSQItem(); //increment the second loop variable
 171   }
 172 #endif
 173   return result;
 174 }
 175