message: fixing issue 9583 - issue in cascadeclassifier code clipObjects
diff: @@ -1666,7 +1666,7 @@ void clipObjects(Size sz, std::vector<Rect>& objects,
  for( i = 0; i < n; i++ )
  {
  Rect r = win0 & objects[i];
  - if( r.area() > 0 )
  + if( !r.empty() )
  {
  objects[j] = r;
  if( i > j )
  