X-Git-Url: https://git.creatis.insa-lyon.fr/pubgit/?a=blobdiff_plain;f=itk%2FclitkSliceBySliceRelativePositionFilter.txx;h=f2452d872ad2258528c20301f0515f606648e323;hb=e0561dae1fa08ae95f620029a50de7a370e55d04;hp=eafb41608e3e8ae68f1e30b10360d5d96607e830;hpb=c76f12777dc452f96a762a7f86bfca982010dd46;p=clitk.git

diff --git a/itk/clitkSliceBySliceRelativePositionFilter.txx b/itk/clitkSliceBySliceRelativePositionFilter.txx
index eafb416..f2452d8 100644
--- a/itk/clitkSliceBySliceRelativePositionFilter.txx
+++ b/itk/clitkSliceBySliceRelativePositionFilter.txx
@@ -33,7 +33,14 @@ SliceBySliceRelativePositionFilter():
   SetDirection(2);
   UniqueConnectedComponentBySliceOff();
   SetIgnoreEmptySliceObjectFlag(false);
+  UseASingleObjectConnectedComponentBySliceFlagOn();
+  this->VerboseStepFlagOff();
+  this->WriteStepFlagOff();
   this->SetCombineWithOrFlag(false);
+  CCLSelectionFlagOff();
+  SetCCLSelectionDimension(0);
+  SetCCLSelectionDirection(1);
+  CCLSelectionIgnoreSingleCCLFlagOff();
 }
 //--------------------------------------------------------------------
 
@@ -173,11 +180,49 @@ GenerateOutputInformation()
   // Perform slice by slice relative position
   this->StartNewStep("Perform slice by slice relative position");
   for(unsigned int i=0; i<mInputSlices.size(); i++) {
-    // Select main CC in each object slice (required ?)
+    
+    // Count the number of CCL (allow to ignore empty slice)
     int nb=0;
     mObjectSlices[i] = LabelizeAndCountNumberOfObjects<SliceType>(mObjectSlices[i], 0, true, 1, nb);
     if ((!GetIgnoreEmptySliceObjectFlag()) || (nb!=0)) {
-      mObjectSlices[i] = KeepLabels<SliceType>(mObjectSlices[i], 0, 1, 1, 1, true);
+
+      // Select or not a single CCL ?
+      if (GetUseASingleObjectConnectedComponentBySliceFlag()) {
+        mObjectSlices[i] = KeepLabels<SliceType>(mObjectSlices[i], 0, 1, 1, 1, true);
+      }
+
+      // Select a single according to a position if more than one CCL
+      if (GetCCLSelectionFlag()) {
+        // if several CCL, choose the most extrema according a direction, 
+        // if not -> should we consider this slice ? 
+        if (nb<2) {
+          if (GetCCLSelectionIgnoreSingleCCLFlag()) {
+            mObjectSlices[i] = SetBackground<SliceType, SliceType>(mObjectSlices[i], mObjectSlices[i], 
+                                                                   1, this->GetBackgroundValue(), 
+                                                                   true);
+          }
+        }
+        int dim = GetCCLSelectionDimension();
+        int direction = GetCCLSelectionDirection();
+        std::vector<typename SliceType::PointType> centroids;
+        ComputeCentroids<SliceType>(mObjectSlices[i], this->GetBackgroundValue(), centroids);
+        uint index=1;
+        for(uint j=1; j<centroids.size(); j++) {
+          if (direction == 1) {
+            if (centroids[j][dim] > centroids[index][dim]) index = j;
+          }
+          else {
+            if (centroids[j][dim] < centroids[index][dim]) index = j;
+          }
+        }
+        for(uint v=1; v<centroids.size(); v++) {
+          if (v != index) {
+            mObjectSlices[i] = SetBackground<SliceType, SliceType>(mObjectSlices[i], mObjectSlices[i], 
+                                                                   (char)v, this->GetBackgroundValue(), 
+                                                                   true);
+          }
+        }
+      } // end GetCCLSelectionFlag = true
 
       // Relative position
       typedef clitk::AddRelativePositionConstraintToLabelImageFilter<SliceType> RelPosFilterType;
@@ -208,6 +253,15 @@ GenerateOutputInformation()
         mInputSlices[i] = KeepLabels<SliceType>(mInputSlices[i], 0, 1, 1, 1, true);
       }
 
+      /*
+      // Select unique CC according to the most in a given direction
+      if (GetUniqueConnectedComponentBySliceAccordingToADirection()) {
+        int nb;
+        mInputSlices[i] = LabelizeAndCountNumberOfObjects<SliceType>(mInputSlices[i], 0, true, 1, nb);
+        std::vector<typename ImageType::PointType> & centroids;
+        ComputeCentroids
+        }
+      */
     }
   }