diff --git a/src/Mod/Points/App/PointsPy.xml b/src/Mod/Points/App/PointsPy.xml
index 530bc3856..af555c8b3 100644
--- a/src/Mod/Points/App/PointsPy.xml
+++ b/src/Mod/Points/App/PointsPy.xml
@@ -44,6 +44,16 @@ transforming and much more.
         <UserDocu>add one or more (list of) points to the object</UserDocu>
       </Documentation>
     </Methode>
+    <Methode Name="fromSegment" Const="true">
+      <Documentation>
+        <UserDocu>Get a new point object from a given segment</UserDocu>
+      </Documentation>
+    </Methode>
+    <Methode Name="fromValid" Const="true">
+      <Documentation>
+        <UserDocu>Get a new point object from points with valid coordinates (i.e. that are not NaN)</UserDocu>
+      </Documentation>
+    </Methode>
     <Attribute Name="CountPoints" ReadOnly="true">
 			<Documentation>
 				<UserDocu>Return the number of vertices of the points object.</UserDocu>
diff --git a/src/Mod/Points/App/PointsPyImp.cpp b/src/Mod/Points/App/PointsPyImp.cpp
index 90e477f20..ca8857177 100644
--- a/src/Mod/Points/App/PointsPyImp.cpp
+++ b/src/Mod/Points/App/PointsPyImp.cpp
@@ -27,6 +27,7 @@
 #include <Base/Builder3D.h>
 #include <Base/VectorPy.h>
 #include <Base/GeometryPyCXX.h>
+#include <boost/math/special_functions/fpclassify.hpp>
 
 // inclusion of the generated files (generated out of PointsPy.xml)
 #include "PointsPy.h"
@@ -168,6 +169,54 @@ PyObject* PointsPy::addPoints(PyObject * args)
     Py_Return;
 }
 
+PyObject* PointsPy::fromSegment(PyObject * args)
+{
+    PyObject *obj;
+    if (!PyArg_ParseTuple(args, "O", &obj))
+        return 0;
+
+    try {
+        const PointKernel* points = getPointKernelPtr();
+        Py::Sequence list(obj);
+        std::auto_ptr<PointKernel> pts(new PointKernel());
+        pts->reserve(list.size());
+        int numPoints = static_cast<int>(points->size());
+        for (Py::Sequence::iterator it = list.begin(); it != list.end(); ++it) {
+            int index = static_cast<int>(Py::Int(*it));
+            if (index >= 0 && index < numPoints)
+                pts->push_back(points->getPoint(index));
+        }
+
+        return new PointsPy(pts.release());
+    }
+    catch (const Py::Exception&) {
+        PyErr_SetString(Base::BaseExceptionFreeCADError, "expect a list of int");
+        return 0;
+    }
+}
+
+PyObject* PointsPy::fromValid(PyObject * args)
+{
+    if (!PyArg_ParseTuple(args, ""))
+        return 0;
+
+    try {
+        const PointKernel* points = getPointKernelPtr();
+        std::auto_ptr<PointKernel> pts(new PointKernel());
+        pts->reserve(points->size());
+        for (PointKernel::const_iterator it = points->begin(); it != points->end(); ++it) {
+            if (!boost::math::isnan(it->x) && !boost::math::isnan(it->y) && !boost::math::isnan(it->z))
+                pts->push_back(*it);
+        }
+
+        return new PointsPy(pts.release());
+    }
+    catch (const Py::Exception&) {
+        PyErr_SetString(Base::BaseExceptionFreeCADError, "expect a list of int");
+        return 0;
+    }
+}
+
 Py::Int PointsPy::getCountPoints(void) const
 {
     return Py::Int((long)getPointKernelPtr()->size());
diff --git a/src/Mod/ReverseEngineering/App/AppReverseEngineering.cpp b/src/Mod/ReverseEngineering/App/AppReverseEngineering.cpp
index dacfd7992..144d14c3b 100644
--- a/src/Mod/ReverseEngineering/App/AppReverseEngineering.cpp
+++ b/src/Mod/ReverseEngineering/App/AppReverseEngineering.cpp
@@ -649,6 +649,7 @@ Mesh.show(m)
         for (std::size_t i = 0; i < parameters.size(); i++)
             tuple.setItem(i, Py::Float(parameters[i]));
         dict.setItem(Py::String("Probability"), Py::Float(probability));
+        dict.setItem(Py::String("Parameters"), tuple);
 
         return dict;
     }
diff --git a/src/Mod/ReverseEngineering/App/RegionGrowing.cpp b/src/Mod/ReverseEngineering/App/RegionGrowing.cpp
index a81e5c48d..bb6fd5ef8 100644
--- a/src/Mod/ReverseEngineering/App/RegionGrowing.cpp
+++ b/src/Mod/ReverseEngineering/App/RegionGrowing.cpp
@@ -26,6 +26,7 @@
 #include "RegionGrowing.h"
 #include <Mod/Points/App/Points.h>
 #include <Base/Exception.h>
+#include <boost/math/special_functions/fpclassify.hpp>
 
 #if defined(HAVE_PCL_FILTERS)
 #include <pcl/filters/passthrough.h>
@@ -55,7 +56,8 @@ void RegionGrowing::perform(int ksearch)
     pcl::PointCloud<pcl::PointXYZ>::Ptr cloud (new pcl::PointCloud<pcl::PointXYZ>);
     cloud->reserve(myPoints.size());
     for (Points::PointKernel::const_iterator it = myPoints.begin(); it != myPoints.end(); ++it) {
-        cloud->push_back(pcl::PointXYZ(it->x, it->y, it->z));
+        if (!boost::math::isnan(it->x) && !boost::math::isnan(it->y) && !boost::math::isnan(it->z))
+            cloud->push_back(pcl::PointXYZ(it->x, it->y, it->z));
     }
 
     //normal estimation
@@ -102,19 +104,23 @@ void RegionGrowing::perform(const std::vector<Base::Vector3f>& myNormals)
 
     pcl::PointCloud<pcl::PointXYZ>::Ptr cloud (new pcl::PointCloud<pcl::PointXYZ>);
     cloud->reserve(myPoints.size());
-    for (Points::PointKernel::const_iterator it = myPoints.begin(); it != myPoints.end(); ++it) {
-        cloud->push_back(pcl::PointXYZ(it->x, it->y, it->z));
+    pcl::PointCloud <pcl::Normal>::Ptr normals (new pcl::PointCloud <pcl::Normal>);
+    normals->reserve(myNormals.size());
+
+    std::size_t num_points = myPoints.size();
+    const std::vector<Base::Vector3f>& points = myPoints.getBasicPoints();
+    for (std::size_t index=0; index<num_points; index++) {
+        const Base::Vector3f& p = points[index];
+        const Base::Vector3f& n = myNormals[index];
+        if (!boost::math::isnan(p.x) && !boost::math::isnan(p.y) && !boost::math::isnan(p.z)) {
+            cloud->push_back(pcl::PointXYZ(p.x, p.y, p.z));
+            normals->push_back(pcl::Normal(n.x, n.y, n.z));
+        }
     }
 
     pcl::search::Search<pcl::PointXYZ>::Ptr tree = boost::shared_ptr<pcl::search::Search<pcl::PointXYZ> > (new pcl::search::KdTree<pcl::PointXYZ>);
     tree->setInputCloud (cloud);
 
-    pcl::PointCloud <pcl::Normal>::Ptr normals (new pcl::PointCloud <pcl::Normal>);
-    normals->reserve(myNormals.size());
-    for (std::vector<Base::Vector3f>::const_iterator it = myNormals.begin(); it != myNormals.end(); ++it) {
-        normals->push_back(pcl::Normal(it->x, it->y, it->z));
-    }
-
     // pass through
     pcl::IndicesPtr indices (new std::vector <int>);
     pcl::PassThrough<pcl::PointXYZ> pass;
diff --git a/src/Mod/ReverseEngineering/App/SampleConsensus.cpp b/src/Mod/ReverseEngineering/App/SampleConsensus.cpp
index 2e398bf90..cb0d654a6 100644
--- a/src/Mod/ReverseEngineering/App/SampleConsensus.cpp
+++ b/src/Mod/ReverseEngineering/App/SampleConsensus.cpp
@@ -26,6 +26,7 @@
 #include "SampleConsensus.h"
 #include <Mod/Points/App/Points.h>
 #include <Base/Exception.h>
+#include <boost/math/special_functions/fpclassify.hpp>
 
 #if defined(HAVE_PCL_SAMPLE_CONSENSUS)
 #include <pcl/point_types.h>
@@ -48,7 +49,8 @@ double SampleConsensus::perform(std::vector<float>& parameters)
     pcl::PointCloud<pcl::PointXYZ>::Ptr cloud (new pcl::PointCloud<pcl::PointXYZ>);
     cloud->reserve(myPoints.size());
     for (Points::PointKernel::const_iterator it = myPoints.begin(); it != myPoints.end(); ++it) {
-        cloud->push_back(pcl::PointXYZ(it->x, it->y, it->z));
+        if (!boost::math::isnan(it->x) && !boost::math::isnan(it->y) && !boost::math::isnan(it->z))
+            cloud->push_back(pcl::PointXYZ(it->x, it->y, it->z));
     }
 
     cloud->width = int (cloud->points.size ());