ENH: masked disparity values are filled with no data value in DisparitiesTranslate filter.

Code/DisparityMap/otbDisparityTranslateFilter.h

@@ -63,6 +63,7 @@ public:
   typedef TMaskImage       MaskType;
   typedef TSensorImage     SensorType;
   
+  typedef typename DispMapType::PixelType    PixelType;
   typedef typename DispMapType::RegionType   RegionType;
   typedef typename DispMapType::SizeType     SizeType;
   typedef typename DispMapType::IndexType    IndexType;
@@ -71,6 +72,10 @@ public:
   
   typedef typename GridType::RegionType      GridRegionType;
   
+  /** Set/Get macro for NoDataValue */
+  itkSetMacro(NoDataValue, PixelType);
+  itkGetConstReferenceMacro(NoDataValue, PixelType);
+
   /** Set the horizontal disparity map */
   void SetHorizontalDisparityMapInput( const TDisparityImage * hmap );
   
@@ -123,6 +128,7 @@ private:
   DisparityTranslateFilter(const Self&); //purposely not implemented
   void operator=(const Self&); //purposely not implemented
   
+  PixelType              m_NoDataValue;
 };
 
 } // end namespace otb

Code/DisparityMap/otbDisparityTranslateFilter.txx

@@ -30,6 +30,7 @@ template <class TDisparityImage, class TGridImage, class TSensorImage, class TMa
 DisparityTranslateFilter<TDisparityImage,TGridImage,TSensorImage,TMaskImage>
 ::DisparityTranslateFilter()
 {
+  m_NoDataValue = -32768;
   // Set the number of inputs (1 moving image by default -> 3 inputs)
   this->SetNumberOfInputs(6);
   this->SetNumberOfRequiredInputs(1);
@@ -452,8 +453,8 @@ DisparityTranslateFilter<TDisparityImage,TGridImage,TSensorImage,TMaskImage>
       }
     else
       {
-      horizIter.Set(0);
-      vertiIter.Set(0);
+      horizIter.Set(m_NoDataValue);
+      vertiIter.Set(m_NoDataValue);
       }
     
     ++horizIter;