bugfix

semseg/SemSegContextTree.cpp

@@ -1573,6 +1573,7 @@ void SemSegContextTree::extractBasicFeatures ( NICE::MultiChannelImage3DT<double
   {
     //using segmentation
     MultiChannelImageT<int> regions;
+    regions.reInit( xsize, ysize, zsize );
     vector<int> chanSelect;
     for ( int i=0; i<3; i++ )
       chanSelect.push_back ( i );