diff --git a/Code/IO/otbDEMReaderFilter.h b/Code/IO/otbDEMReaderFilter.h
new file mode 100755
index 0000000000000000000000000000000000000000..e677d37bda3304673daf12f7b714d94c62423eff
--- /dev/null
+++ b/Code/IO/otbDEMReaderFilter.h
@@ -0,0 +1,115 @@
+/*=========================================================================
+
+ Program: ORFEO Toolbox
+ Language: C++
+ Date: $Date$
+ Version: $Revision$
+
+
+ Copyright (c) Centre National d'Etudes Spatiales. All rights reserved.
+ See OTBCopyright.txt for details.
+
+
+ This software is distributed WITHOUT ANY WARRANTY; without even
+ the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ PURPOSE. See the above copyright notices for more information.
+
+=========================================================================*/
+#ifndef __otbDEMReaderFilter_h
+#define __otbDEMReaderFilter_h
+
+#include "itkIndent.h"
+#include "itkImageSource.h"
+#include "otbImage.h"
+#include <iostream>
+#include <stdio.h>
+#include "elevation/ossimElevManager.h"
+#include "base/ossimFilename.h"
+#include "itkImageRegionIteratorWithIndex.h"
+#include "itkIndent.h"
+
+namespace otb
+{
+/** \class DEMReaderFilter
+ *
+ * \brief Class for Reading a DEM data
+ *
+ * This class is based on ossimElevManager. It takes in input the UL and LR geographic coordinates and the spacing.
+ * Handle DTED and SRTM formats.
+ * \ingroup Images
+ *
+ */
+template <class TDEMImage>
+class ITK_EXPORT DEMReaderFilter:
+public itk::ImageSource<Image<typename TDEMImage::PixelType,2, 0> >
+{
+public :
+/** Standard class typedefs. */
+ typedef itk::Indent Indent;
+ typedef TDEMImage DEMImageType;
+ typedef typename DEMImageType::Pointer DEMImagePointerType;
+ typedef typename DEMImageType::PixelType PixelType;
+
+ typedef DEMReaderFilter Self;
+ typedef itk::ImageSource<Image<typename DEMImageType::PixelType,2, 0> > Superclass;
+ typedef itk::SmartPointer<Self> Pointer;
+ typedef itk::SmartPointer<const Self> ConstPointer;
+ typedef Image<PixelType,2> OutputImageType;
+
+ typedef typename Superclass::Pointer OutputImagePointer;
+ typedef typename OutputImageType::SpacingType SpacingType;
+ typedef typename OutputImageType::SizeType SizeType;
+ typedef typename OutputImageType::PointType PointType;
+ typedef typename OutputImageType::IndexType IndexType;
+ typedef typename Superclass::OutputImageRegionType OutputImageRegionType;
+ typedef itk::ImageRegionIteratorWithIndex< Image<PixelType,2, 0> > ImageIteratorType;
+
+ /** Method for creation through the object factory. */
+ itkNewMacro(Self);
+
+ /** Run-time type information (and related methods). */
+ itkTypeMacro(DEMReader,ImageSource);
+
+ /** Set the spacing. */
+ itkSetMacro(Spacing,SpacingType);
+ itkGetConstReferenceMacro(Spacing,SpacingType);
+
+ /** Set the Upper Left coordinates. */
+ itkSetMacro(Ul,PointType);
+ itkGetConstReferenceMacro(Ul,PointType);
+
+ /** Set the Lower Right coordinates. */
+ itkSetMacro(Lr,PointType);
+ itkGetConstReferenceMacro(Lr,PointType);
+
+ /** Set the spacing. */
+ void SetSpacing(const double* spacing);
+
+ /** Try to open the DEM directory. */
+ bool OpenDEMDirectory(char* &DEMDirectory);
+
+ /** Compute the height above MSL(Mean Sea Level) of the point. */
+ virtual double GetHeightAboveMSL(const PointType& worldPoint);
+
+protected:
+ DEMReaderFilter();
+ ~DEMReaderFilter();
+
+ void PrintSelf(std::ostream& os, Indent indent) const;
+ void GenerateData();
+ virtual void GenerateOutputInformation();
+
+ ossimElevManager* m_ElevManager;
+ //DEMImagePointerType m_DEMImage;
+ SpacingType m_Spacing;
+ PointType m_Ul;
+ PointType m_Lr;
+};
+
+} // namespace otb
+
+#ifndef OTB_MANUAL_INSTANTIATION
+#include "otbDEMReaderFilter.txx"
+#endif
+
+#endif
diff --git a/Code/IO/otbDEMReaderFilter.txx b/Code/IO/otbDEMReaderFilter.txx
new file mode 100755
index 0000000000000000000000000000000000000000..144a68e5c4d2cc72b5061ddf2e4ba292daad4e7c
--- /dev/null
+++ b/Code/IO/otbDEMReaderFilter.txx
@@ -0,0 +1,171 @@
+/*=========================================================================
+
+ Program: ORFEO Toolbox
+ Language: C++
+ Date: $Date$
+ Version: $Revision$
+
+
+ Copyright (c) Centre National d'Etudes Spatiales. All rights reserved.
+ See OTBCopyright.txt for details.
+
+
+ This software is distributed WITHOUT ANY WARRANTY; without even
+ the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ PURPOSE. See the above copyright notices for more information.
+
+=========================================================================*/
+#ifndef __otbDEMReaderFilter_txx
+#define __otbDEMReaderFilter_txx
+
+#include "otbDEMReaderFilter.h"
+#include "otbMacro.h"
+
+namespace otb
+{
+
+
+template<class TDEMImage>
+DEMReaderFilter<TDEMImage>
+::DEMReaderFilter()
+{
+ m_ElevManager=ossimElevManager::instance();
+//m_DEMImage = DEMImageType::New();
+ m_Spacing[0]=0;
+ m_Spacing[1]=0;
+ m_Ul[0]=0;
+ m_Ul[1]=0;
+ m_Lr[0]=0;
+ m_Lr[1]=0;
+}
+
+template<class TDEMImage>
+DEMReaderFilter<TDEMImage>
+::~DEMReaderFilter()
+{
+ delete m_ElevManager;
+}
+
+///Methode pour specifier un dossier contenant des DEM
+template<class TDEMImage>
+bool
+DEMReaderFilter<TDEMImage>::
+OpenDEMDirectory(char* &DEMDirectory)
+{
+ ossimFilename ossimDEMDir;
+ ossimDEMDir=ossimFilename(DEMDirectory);
+ bool result= false;
+ if (m_ElevManager->openDirectory(ossimDEMDir))
+ {
+ result= true;
+ }
+ return result;
+}
+
+///Methode pour calculer l'altitude d'un point geographique
+template<class TDEMImage>
+double
+DEMReaderFilter<TDEMImage>::
+GetHeightAboveMSL(const PointType& worldPoint)
+{
+ float height;
+ ossimGpt ossimWorldPoint;
+ ossimWorldPoint.lat=worldPoint[0];
+ ossimWorldPoint.lon=worldPoint[1];
+ height=m_ElevManager->getHeightAboveMSL(ossimWorldPoint);
+ return height;
+}
+
+///Methode SetSpacing
+template<class TDEMImage>
+ void DEMReaderFilter<TDEMImage>
+ ::SetSpacing( const double* spacing)
+{
+ SpacingType s(spacing);
+ this->SetSpacing(s);
+}
+
+///Methode GenerateOutputInformation
+template <class TDEMImage>
+void DEMReaderFilter<TDEMImage>
+::GenerateOutputInformation()
+{
+ DEMImageType *output;
+ IndexType start;
+ start[0]=0;
+ start[1]=0;
+
+ PointType origin;
+ origin[0]=m_Ul[0]; //latitude de l'origine.
+ origin[1]=m_Ul[1]; //longitude de l'origine.
+ output = this->GetOutput(0);
+
+ // Calcul de la taille de l'image:
+ SizeType size;
+ size[0]=int (abs(((m_Lr[0]-m_Ul[0])/m_Spacing[0]))+1.5);
+ size[1]=int (abs(((m_Lr[1]-m_Ul[1])/m_Spacing[1]))+1.5);
+
+ // On specifie les parametres de la region
+ OutputImageRegionType largestPossibleRegion;
+ largestPossibleRegion.SetSize( size );
+ largestPossibleRegion.SetIndex( start );
+ output->SetLargestPossibleRegion( largestPossibleRegion );
+
+ output->SetSpacing(m_Spacing);
+ output->SetOrigin(m_Ul);
+}
+
+///Methode GenerateData
+template <class TDEMImage>
+void
+DEMReaderFilter<TDEMImage>
+::GenerateData()
+{
+ DEMImagePointerType m_DEMImage = this->GetOutput();
+
+ // allocate the output buffer
+ m_DEMImage->SetBufferedRegion( m_DEMImage->GetRequestedRegion() );
+ m_DEMImage->Allocate();
+
+ // Create an iterator that will walk the output region
+ ImageIteratorType outIt = ImageIteratorType(m_DEMImage,m_DEMImage->GetRequestedRegion());
+
+ // Walk the output image, evaluating the height at each pixel
+ IndexType currentindex;
+ PointType phyPoint;
+ double height;
+ for (outIt.GoToBegin(); !outIt.IsAtEnd(); ++outIt)
+ {
+ currentindex=outIt.GetIndex();
+ m_DEMImage->TransformIndexToPhysicalPoint(currentindex, phyPoint);
+ ossimGpt ossimWorldPoint;
+ ossimWorldPoint.lat=phyPoint[0];
+ ossimWorldPoint.lon=phyPoint[1];
+ height=m_ElevManager->getHeightAboveMSL(ossimWorldPoint); //Calcul de l'altitude
+ otbMsgDebugMacro(<<" HeightAboveMSL: "<<height);
+ if (height>-static_cast<double>(32768)) //On teste si les fichiers MNT recouvre la zone g�ographique demand�e (-32768 = theNullHeightValue)
+ {
+ m_DEMImage->SetPixel(currentindex, static_cast<PixelType>(height) );
+ } //On remplit l'image
+ else
+ {
+ m_DEMImage->SetPixel(currentindex, static_cast<PixelType>(0) );
+ }
+ }
+}
+
+template <class TDEMImage>
+void
+DEMReaderFilter<TDEMImage>
+::PrintSelf(std::ostream& os, Indent indent) const
+{
+ Superclass::PrintSelf(os,indent);
+
+ os << indent << "Spacing:"<< m_Spacing[0] << ","<< m_Spacing[1] << std::endl;
+ os << indent << "Lr:"<< m_Lr[0] << ","<< m_Lr[1] << std::endl;
+ os << indent << "Ul:"<< m_Ul[0] << ","<< m_Ul[1] << std::endl;
+}
+
+} // namespace otb
+
+#endif