diff --git a/wrap/qt/PolyToQImage.cpp b/wrap/qt/PolyToQImage.cpp
index 17af14a0..5f22f27c 100644
--- a/wrap/qt/PolyToQImage.cpp
+++ b/wrap/qt/PolyToQImage.cpp
@@ -18,11 +18,10 @@ void rectSetToPolySet(vector< Box2f > &rectVec, vector< vector<Point2f> > &polyV
       polyVec.back().push_back(Point2f(b.max[0],b.min[1]));
       polyVec.back().push_back(b.max);
       polyVec.back().push_back(Point2f(b.min[0],b.max[1]));
-
   }
 }
 
-void dumpPolySet(const char * imageName, vector< vector<Point2f> > &polyVec, int width, int height)
+void dumpPolySet(const char * imageName, vector< vector<Point2f> > &polyVec, PolyDumperParam &pp)
 {
   Box2f bb;
   for(size_t i=0;i<polyVec.size();++i)
@@ -30,55 +29,15 @@ void dumpPolySet(const char * imageName, vector< vector<Point2f> > &polyVec, int
       bb.Add(polyVec[i][j]);
 
   Similarity2f sim;
-  sim.sca = min(float(width)/bb.DimX(),float(height)/bb.DimY());
-  sim.tra = Point2f(width/2.0f,height/2.0f)-bb.Center()*sim.sca;
+  sim.sca = min(float(pp.widthPx)/bb.DimX(),float(pp.heightPx)/bb.DimY());
+  sim.tra = Point2f(pp.widthPx/2.0f,pp.heightPx/2.0f)-bb.Center()*sim.sca;
   vector<Similarity2f> trVec(polyVec.size(),sim);
 
-  dumpPolySet(imageName,polyVec,trVec,width,height);
+  dumpPolySet(imageName,polyVec,trVec,pp);
 }
 
-void dumpPolySet(const char * imageName, vector< vector< vector<Point2f> > > &polyVecVec, vector<Similarity2f> &trVec, int width, int height)
-{
-  assert(polyVecVec.size() == trVec.size());
 
-  QImage img(width,height,QImage::Format_RGB32);
-  img.fill(qRgb(128,128,128));
-
-  QSvgGenerator svg;
-  svg.setFileName(imageName);
-  QPainter painter;
-
-  if(QString(imageName).endsWith("svg",Qt::CaseInsensitive))
-        painter.begin(&svg);
-  else  painter.begin(&img);
-
-  for(size_t i=0;i<polyVecVec.size();++i)
-  {
-    painter.resetTransform();
-    painter.translate(trVec[i].tra[0],trVec[i].tra[1]);
-    painter.rotate(math::ToDeg(trVec[i].rotRad));
-    painter.scale(trVec[i].sca,trVec[i].sca);
-    QVector<QPointF> ppQ;
-    for(int j=0;j<polyVecVec[i][0].size();++j)
-    {
-      Point2f pp=polyVecVec[i][0][j];
-      ppQ.push_back(QPointF(pp[0],pp[1]));
-    }
-
-    QBrush bb(vcg::ColorConverter::ToQColor(Color4b::Scatter(polyVecVec.size(),i)));
-    painter.setBrush(bb);
-    painter.drawPolygon(&*ppQ.begin(),ppQ.size(),Qt::OddEvenFill);
-  }
-  painter.end();
-
- if(!QString(imageName).endsWith("svg",Qt::CaseInsensitive))
- {
-   img = img.mirrored(false,true);
-   img.save(imageName);
- }
-}
-
-void dumpPolySet(const char * imageName, vector< vector<Point2f> > &polyVec, vector<Similarity2f> &trVec, int width, int height)
+void dumpPolySet(const char * imageName, vector< vector<Point2f> > &polyVec, vector<Similarity2f> &trVec, PolyDumperParam &pp)
 {
   vector< vector< vector<Point2f> > > polyVecVec(polyVec.size());
   for(size_t i=0;i<polyVec.size();++i)
@@ -86,6 +45,72 @@ void dumpPolySet(const char * imageName, vector< vector<Point2f> > &polyVec, vec
     polyVecVec[i].resize(1);
     polyVecVec[i][0]=polyVec[i];
   }
-  dumpPolySet(imageName,polyVecVec,trVec,width,height);
+  vector<string> labelVec(polyVec.size());
+  dumpPolySet(imageName,polyVecVec,trVec,labelVec,pp);
+}
+
+
+
+void dumpPolySet(const char * imageName, vector< vector< vector<Point2f> > > &polyVecVec, vector<Similarity2f> &trVec, vector<string> &labelVec, PolyDumperParam &pp)
+{
+  assert(polyVecVec.size() == trVec.size());
+  QFont qf("courier",1);
+  QSvgGenerator svg;
+  svg.setFileName(imageName);
+//  pp.widthPx = pp.widthDot;
+//  pp.heightPx = pp.heightDot;
+  svg.setSize(QSize(pp.widthMm,pp.heightMm));
+  svg.setResolution(pp.dpi); // ?? dpm or dpi
+
+  QImage img(pp.widthPx,pp.heightPx,QImage::Format_RGB32);
+  img.fill(vcg::ColorConverter::ToQColor( pp.backgroundColor).rgb());
+
+  QPainter painter;
+
+  if(QString(imageName).endsWith("svg",Qt::CaseInsensitive))
+        painter.begin(&svg);
+  else  painter.begin(&img);
+  QBrush bb;
+  QPen qp;
+  qp.setWidth(0);
+//  printf("polyVecVec.size() = %i \n",polyVecVec.size());
+  for(size_t i=0;i<polyVecVec.size();++i)
+  {
+    painter.resetTransform();
+    painter.translate(trVec[i].tra[0],trVec[i].tra[1]);
+    painter.rotate(math::ToDeg(trVec[i].rotRad));
+    painter.scale(trVec[i].sca,trVec[i].sca);
+    QPainterPath QPP;
+    Point2f bc(0.f,0.f);
+//    printf("polyVecVec[i].size() = %i \n",polyVecVec[i].size());
+    for(int jj=0;jj<polyVecVec[i].size();++jj)
+    {
+      QVector<QPointF> ppQ;
+      for(int j=0;j<polyVecVec[i][jj].size();++j)
+      {
+        Point2f pp=polyVecVec[i][jj][j];
+        bc+=pp;
+        ppQ.push_back(QPointF(pp[0],pp[1]));
+      }
+       ppQ.push_back(QPointF(polyVecVec[i][jj][0][0],polyVecVec[i][jj][0][1]));
+      QPP.addPolygon(QPolygonF(ppQ));
+    }
+    bc/=float(polyVecVec[i][0].size());
+    bb.setColor(vcg::ColorConverter::ToQColor(Color4b::Scatter(polyVecVec.size(),i)));
+
+    painter.setBrush(bb);
+    painter.setPen(qp);
+    painter.drawPath(QPP);
+
+//    painter.setFont(qf);
+//    painter.drawText(bc[0],bc[1],QString(labelVec[i].c_str()));
+  }
+  painter.end();
+
+// if(!QString(imageName).endsWith("svg",Qt::CaseInsensitive))
+ {
+   img = img.mirrored(false,true);
+   img.save(imageName);
+ }
 }
 
diff --git a/wrap/qt/PolyToQImage.h b/wrap/qt/PolyToQImage.h
index 7dc49375..04fb436a 100644
--- a/wrap/qt/PolyToQImage.h
+++ b/wrap/qt/PolyToQImage.h
@@ -1,11 +1,36 @@
 #ifndef POLYTOQIMAGE_H
 #define POLYTOQIMAGE_H
 #include <vcg/space/point2.h>
+#include <vcg/space/color4.h>
 #include <vcg/space/box2.h>
 #include <vcg/math/similarity2.h>
 
-void dumpPolySet(const char * imageName, std::vector< std::vector< std::vector<vcg::Point2f> > > &polyVecVec, std::vector<vcg::Similarity2f> &trVec, int width, int height);
-void dumpPolySet(const char * imageName, std::vector< std::vector<vcg::Point2f> > &polyVec, std::vector<vcg::Similarity2f> &trVec, int width=1024,int height=1024);
-void dumpPolySet(const char * imageName, std::vector< std::vector<vcg::Point2f> > &polyVec, int width=1024,int height=1024);
-void rectSetToPolySet(std::vector< vcg::Box2f > &rectVec, std::vector< std::vector<vcg::Point2f> > &polyVec);
+class PolyDumperParam
+{
+public:
+  vcg::Color4b backgroundColor;
+  int widthPx;
+  int heightPx;
+  int widthMm;
+  int heightMm;
+  int dpi;
+  bool useDPI;
+
+  PolyDumperParam()
+  {
+    backgroundColor = vcg::Color4b::Gray;
+    widthPx=1024;
+    heightPx=1024;
+    dpi=72;
+    widthMm = 100;
+    heightMm = 100;
+    useDPI=false;
+  }
+};
+
+  void dumpPolySet(const char * imageName, std::vector< std::vector< std::vector<vcg::Point2f> > > &polyVecVec, std::vector<vcg::Similarity2f> &trVec, std::vector<std::string> &labelVec, PolyDumperParam &pp);
+  void dumpPolySet(const char * imageName, std::vector< std::vector<vcg::Point2f> > &polyVec, std::vector<vcg::Similarity2f> &trVec, PolyDumperParam &pp);
+  void dumpPolySet(const char * imageName, std::vector< std::vector<vcg::Point2f> > &polyVec, PolyDumperParam &pp);
+  void rectSetToPolySet(std::vector< vcg::Box2f > &rectVec, std::vector< std::vector<vcg::Point2f> > &polyVec);
+
 #endif // POLYTOQIMAGE_H