Add missing cmake file for hierarchical segmentation tool and add

debugging outputs.

	*  apps/hierachical_seg-gui/CMakeLists.txt,
	*  apps/hierachical_seg-gui/hierachical_seg-gui.cpp: debug outputs.

apps/hierachical_seg-gui/CMakeLists.txt

+if (${QT4_FOUND})
+
+  INCLUDE(${QT_USE_FILE})
+
+  link_libraries(${FreeImage_LIBRARIES})
+
+
+  QT4_WRAP_CPP(hierarchical_seg-gui_MOC
+    ${CMAKE_HOME_DIRECTORY}/mln/qt/imageviewer.hpp
+    brush.hpp)
+
+  QT4_GENERATE_MOC(${CMAKE_HOME_DIRECTORY}/mln/qt/imageviewer.hxx
+    ${CMAKE_CURRENT_BINARY_DIR}/imageviewer.moc.cpp)
+
+
+  add_executable(hierarchical_seg-gui  hierachical_seg-gui.cpp brush.cpp
+    ${hierarchical_seg-gui_MOC}
+    ${CMAKE_HOME_DIRECTORY}/mln/qt/qtimage.cpp
+    ${CMAKE_CURRENT_BINARY_DIR}/imageviewer.moc.cpp)
+
+  add_executable(hierarchical_seg-cli  hierachical_seg-cli.cpp)
+
+  target_link_libraries(hierarchical_seg-gui ${QT_QTMAIN_LIBRARY} ${QT_LIBRARIES})
+
+endif(${QT4_FOUND})
+

apps/hierachical_seg-gui/hierachical_seg-gui.cpp

 
 #include <mln/core/image/image2d.hpp>
 #include <mln/io/imread.hpp>
+#include <mln/io/imsave.hpp>
 #include <mln/core/colors.hpp>
 #include <mln/colors/literal.hpp>
 
 #include <mln/morpho/component_tree/component_tree.hpp>
+#include <mln/morpho/component_tree/reconstruction.hpp>
 #include <mln/morpho/maxtree/maxtree.hpp>
 #include <mln/data/stretch.hpp>
 
@@ -14,7 +16,6 @@
 #include <apps/tos/topology.hpp>
 #include <apps/tos/Kinterpolate.hpp>
 #include "brush.hpp"
-#include "myheap.hpp"
 
 
 using namespace mln;
@@ -49,11 +50,24 @@ segmentation(const tree_t& tree,
       colortag v = (colortag)px.val();
 
       if (K1::is_face_2(px.point()) and v != BLANC)
-        tags[x] = v;
+        {
+          if (tags[x] == BLANC)
+            tags[x] = v;
+          else if (tags[x] != v)
+            tags[x] = NOIR; // Ambuiguity => set background
+        }
     }
 
   tags[tree.get_root()] = NOIR; // Root is background
 
+
+  {
+    image2d<uint8> markers = imchvalue<uint8>(markers__);
+    morpho::reconstruction(tree, tags, markers);
+    io::imsave(markers, "/tmp/markers.tiff");
+  }
+
+
   // Propagate up
   mln_reverse_foreach(auto x, tree.nodes()) {
     if (tags[x] != BLANC) {
@@ -73,6 +87,12 @@ segmentation(const tree_t& tree,
       tags[x] = tags[q];
   }
 
+  {
+    image2d<uint8> markers = imchvalue<uint8>(markers__);
+    morpho::reconstruction(tree, tags, markers);
+    io::imsave(markers, "/tmp/markers2.tiff");
+  }
+
   //
   {
     mln_pixter(pxin, pxout, f, out);