diff --git a/src/OpenMesh/Apps/Unsupported/Streaming-qt4/Server/VDPMServerSession.cc b/src/OpenMesh/Apps/Unsupported/Streaming-qt4/Server/VDPMServerSession.cc
index 2de29853..bc093040 100644
--- a/src/OpenMesh/Apps/Unsupported/Streaming-qt4/Server/VDPMServerSession.cc
+++ b/src/OpenMesh/Apps/Unsupported/Streaming-qt4/Server/VDPMServerSession.cc
@@ -252,11 +252,7 @@ stream_vsplits()
   VHierarchyNodeHandle  node_handle;
   OpenMesh::Vec3f       pos;
   VHierarchyNodeIndex   node_index, fund_lcut_index, fund_rcut_index;
-  float                 lchild_radius, rchild_radius;
   OpenMesh::Vec3f       lchild_normal, rchild_normal;
-  float                 lchild_sin_square, rchild_sin_square;
-  float                 lchild_mue_square, rchild_mue_square;
-  float                 lchild_sigma_square, rchild_sigma_square;
   unsigned int          n_vsplit_packets = (unsigned int) vsplits_.size();
   
   QDataStream qTcp(socket_);
@@ -277,11 +273,11 @@ stream_vsplits()
     node_index = node.node_index();
     fund_lcut_index = node.fund_lcut_index();
     fund_rcut_index = node.fund_rcut_index();
-    lchild_radius = lchild.radius();                rchild_radius = rchild.radius();
+    const float lchild_radius = lchild.radius();                const float rchild_radius = rchild.radius();
     lchild_normal = lchild.normal();                rchild_normal = rchild.normal();
-    lchild_sin_square = lchild.sin_square();        rchild_sin_square = rchild.sin_square();
-    lchild_mue_square = lchild.mue_square();        rchild_mue_square = rchild.mue_square();
-    lchild_sigma_square = lchild.sigma_square();    rchild_sigma_square = rchild.sigma_square();
+    const float lchild_sin_square = lchild.sin_square();        const float rchild_sin_square = rchild.sin_square();
+    const float lchild_mue_square = lchild.mue_square();        const float rchild_mue_square = rchild.mue_square();
+    const float lchild_sigma_square = lchild.sigma_square();    const float rchild_sigma_square = rchild.sigma_square();
 
     qTcp  << pos[0] << pos[1] << pos[2]
           << node_index.value()
diff --git a/src/OpenMesh/Apps/Unsupported/Streaming/Server/VDPMServerSession.cc b/src/OpenMesh/Apps/Unsupported/Streaming/Server/VDPMServerSession.cc
index 0dab1b16..4160d8ef 100644
--- a/src/OpenMesh/Apps/Unsupported/Streaming/Server/VDPMServerSession.cc
+++ b/src/OpenMesh/Apps/Unsupported/Streaming/Server/VDPMServerSession.cc
@@ -245,11 +245,7 @@ stream_vsplits()
   VHierarchyNodeHandle  node_handle;
   OpenMesh::Vec3f       pos;
   VHierarchyNodeIndex   node_index, fund_lcut_index, fund_rcut_index;
-  float                 lchild_radius, rchild_radius;
   OpenMesh::Vec3f       lchild_normal, rchild_normal;
-  float                 lchild_sin_square, rchild_sin_square;
-  float                 lchild_mue_square, rchild_mue_square;
-  float                 lchild_sigma_square, rchild_sigma_square;
   unsigned int          n_vsplit_packets = (unsigned int) vsplits_.size();
   
   QDataStream qTcp(this);
@@ -270,11 +266,11 @@ stream_vsplits()
     node_index = node.node_index();
     fund_lcut_index = node.fund_lcut_index();
     fund_rcut_index = node.fund_rcut_index();
-    lchild_radius = lchild.radius();                rchild_radius = rchild.radius();
-    lchild_normal = lchild.normal();                rchild_normal = rchild.normal();
-    lchild_sin_square = lchild.sin_square();        rchild_sin_square = rchild.sin_square();
-    lchild_mue_square = lchild.mue_square();        rchild_mue_square = rchild.mue_square();
-    lchild_sigma_square = lchild.sigma_square();    rchild_sigma_square = rchild.sigma_square();
+    const float lchild_radius = lchild.radius();                const float rchild_radius = rchild.radius();
+    lchild_normal = lchild.normal();                                        rchild_normal = rchild.normal();
+    const float lchild_sin_square = lchild.sin_square();        const float rchild_sin_square = rchild.sin_square();
+    const float lchild_mue_square = lchild.mue_square();        const float rchild_mue_square = rchild.mue_square();
+    const float lchild_sigma_square = lchild.sigma_square();    const float rchild_sigma_square = rchild.sigma_square();
 
     qTcp  << pos[0] << pos[1] << pos[2]
           << node_index.value()
diff --git a/src/OpenMesh/Tools/VDPM/VHierarchy.cc b/src/OpenMesh/Tools/VDPM/VHierarchy.cc
index 0bf9e961..f28be46d 100644
--- a/src/OpenMesh/Tools/VDPM/VHierarchy.cc
+++ b/src/OpenMesh/Tools/VDPM/VHierarchy.cc
@@ -67,7 +67,8 @@ namespace VDPM {
 
 
 VHierarchy::
-VHierarchy()
+VHierarchy() :
+  n_roots_(0), tree_id_bits_(0)
 {
   clear();
 }
diff --git a/src/OpenMesh/Tools/VDPM/VHierarchyNode.hh b/src/OpenMesh/Tools/VDPM/VHierarchyNode.hh
index beaa96ce..435ba711 100644
--- a/src/OpenMesh/Tools/VDPM/VHierarchyNode.hh
+++ b/src/OpenMesh/Tools/VDPM/VHierarchyNode.hh
@@ -96,7 +96,7 @@ class VHierarchyNode
 {
 public:
 
-  VHierarchyNode() { }
+  VHierarchyNode() :radius_(0.0f), sin_square_(0.0f),mue_square_(0.0f), sigma_square_(0.0f) { }
 
   /// Returns true, if node is root else false.
   bool is_root() const
diff --git a/src/OpenMesh/Tools/VDPM/VHierarchyWindow.cc b/src/OpenMesh/Tools/VDPM/VHierarchyWindow.cc
index fa1fee82..886c24b0 100644
--- a/src/OpenMesh/Tools/VDPM/VHierarchyWindow.cc
+++ b/src/OpenMesh/Tools/VDPM/VHierarchyWindow.cc
@@ -77,27 +77,17 @@ namespace VDPM {
 
 
 VHierarchyWindow::
-VHierarchyWindow()
+VHierarchyWindow() :
+  vhierarchy_(NULL), buffer_(NULL),buffer_min_ (0), buffer_max_(0), window_min_(0), window_max_(0), current_pos_(0) , n_shift_(0)
 {
-  vhierarchy_  = NULL;
-  buffer_      = NULL;
 
-  buffer_min_  = 0;
-  buffer_max_  = 0;
-
-  window_min_  = 0;
-  window_max_  = 0;
-  current_pos_ = 0;
-
-  n_shift_     = 0;
 }
 
 
 VHierarchyWindow::
-VHierarchyWindow(VHierarchy &_vhierarchy)
+VHierarchyWindow(VHierarchy &_vhierarchy) :
+  vhierarchy_(&_vhierarchy),buffer_(NULL),buffer_min_ (0), buffer_max_(0), window_min_(0), window_max_(0) , current_pos_(0) ,n_shift_(0)
 {
-  vhierarchy_ = &_vhierarchy;
-  buffer_     = NULL;
 }
 
 
diff --git a/src/OpenMesh/Tools/VDPM/ViewingParameters.cc b/src/OpenMesh/Tools/VDPM/ViewingParameters.cc
index 3f78301a..2036e2fb 100644
--- a/src/OpenMesh/Tools/VDPM/ViewingParameters.cc
+++ b/src/OpenMesh/Tools/VDPM/ViewingParameters.cc
@@ -70,6 +70,9 @@ namespace VDPM {
 ViewingParameters::
 ViewingParameters()
 {
+  for ( unsigned int i = 0; i < 16; ++i)
+    modelview_matrix_[i] = 0.0;
+
   fovy_ = 45.0f;
   aspect_ = 1.0f;
   tolerance_square_ = 0.001f;