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diff --git a/src/3rdparty/libdepixelize/priv/iterator.h b/src/3rdparty/libdepixelize/priv/iterator.h
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+/*  This file is part of the libdepixelize project
+    Copyright (C) 2013 Vinícius dos Santos Oliveira <vini.ipsmaker@gmail.com>
+
+    GNU Lesser General Public License Usage
+    This library is free software; you can redistribute it and/or modify it
+    under the terms of the GNU Lesser General Public License as published by the
+    Free Software Foundation; either version 2.1 of the License, or (at your
+    option) any later version.
+    You should have received a copy of the GNU Lesser General Public License
+    along with this library.  If not, see <http://www.gnu.org/licenses/>.
+
+    GNU General Public License Usage
+    Alternatively, this library may be used under the terms of the GNU General
+    Public License as published by the Free Software Foundation, either version
+    2 of the License, or (at your option) any later version.
+    You should have received a copy of the GNU General Public License along with
+    this library.  If not, see <http://www.gnu.org/licenses/>.
+
+    This library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    Lesser General Public License for more details.
+*/
+
+#ifndef LIBDEPIXELIZE_TRACER_ITERATOR_H
+#define LIBDEPIXELIZE_TRACER_ITERATOR_H
+
+#include <vector>
+#include <iterator>
+
+namespace Tracer {
+
+template<typename T>
+const T *to_ptr(typename std::vector<T>::const_iterator it)
+{
+    return &*it;
+}
+
+template<typename T>
+T *to_ptr(typename std::vector<T>::iterator it)
+{
+    return &*it;
+}
+
+template<typename T>
+typename std::vector<T>::const_iterator to_iterator(T const *ptr,
+                                                    typename std::vector<T>
+                                                    ::const_iterator begin)
+{
+    typedef typename std::vector<T>::const_iterator It;
+    typedef typename std::iterator_traits<It>::difference_type difference_type;
+    difference_type idx = ptr - to_ptr<T>(begin);
+    return begin + idx;
+}
+
+template<typename T>
+typename std::vector<T>::iterator to_iterator(T *ptr,
+                                              typename std::vector<T>::iterator
+                                              begin)
+{
+    typedef typename std::vector<T>::iterator It;
+    typedef typename std::iterator_traits<It>::difference_type difference_type;
+    difference_type idx = ptr - to_ptr<T>(begin);
+    return begin + idx;
+}
+
+template<typename T>
+class ToIter
+{
+public:
+    typedef typename std::vector<T>::const_iterator const_iterator;
+    typedef typename std::vector<T>::iterator iterator;
+
+    ToIter(const_iterator begin) :
+        begin(begin)
+    {}
+
+    const_iterator operator()(T const *ptr) const
+    {
+        return to_iterator<T>(ptr, begin);
+    }
+
+    iterator operator()(T *ptr) const
+    {
+        return to_iterator<T>(ptr, begin);
+    }
+
+private:
+    typename std::vector<T>::const_iterator begin;
+};
+
+template<typename T>
+class ToPtr
+{
+public:
+    typedef typename std::vector<T>::const_iterator const_iterator;
+    typedef typename std::vector<T>::iterator iterator;
+
+    const T *operator()(const_iterator it) const
+    {
+        return to_ptr<T>(it);
+    }
+
+    T *operator()(iterator it) const
+    {
+        return to_ptr<T>(it);
+    }
+};
+
+} // namespace Tracer
+
+#endif // LIBDEPIXELIZE_TRACER_ITERATOR_H
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :