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diff --git a/src/imaging/DeDistort.h b/src/imaging/DeDistort.h
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+//
+//  libavg - Media Playback Engine. 
+//  Copyright (C) 2003-2014 Ulrich von Zadow
+//
+//  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 of the License, or (at your option) any later version.
+//
+//  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.
+//
+//  You should have received a copy of the GNU Lesser General Public
+//  License along with this library; if not, write to the Free Software
+//  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+//
+//  Current versions can be found at www.libavg.de
+//
+
+#ifndef _DeDistort_H_
+#define _DeDistort_H_
+
+#include "../api.h"
+#include "CoordTransformer.h"
+
+#include "../base/GLMHelper.h"
+#include "../base/Rect.h"
+
+#include <boost/shared_ptr.hpp>
+
+#include <libxml/parser.h>
+#include <libxml/xmlwriter.h>
+
+#include <vector>
+#include <string>
+
+namespace avg {
+
+class TrackerConfig;
+
+class AVG_API DeDistort: public CoordTransformer {
+    public:
+        DeDistort();
+        DeDistort(const glm::vec2& camExtents, const glm::vec2& displayExtents);
+        DeDistort(const glm::vec2& camExtents, 
+                const std::vector<double>& distortionParams, double angle, 
+                double trapezoidFactor, const glm::dvec2& displayOffset, 
+                const glm::dvec2& displayScale);
+        virtual ~DeDistort();
+
+        glm::dvec2 transformBlobToScreen(const glm::dvec2& pt);
+        glm::dvec2 transformScreenToBlob(const glm::dvec2& pt);
+        virtual glm::dvec2 transform_point(const glm::dvec2& pt); 
+        virtual glm::dvec2 inverse_transform_point(const glm::dvec2& pt);
+        FRect getDisplayArea(const glm::vec2& displayExtents);
+        FRect getActiveBlobArea(const FRect& displayROI);
+
+        void load(const glm::vec2 &CameraExtents, const TrackerConfig& config);
+        void save(TrackerConfig& config);
+
+        bool operator ==(const DeDistort& other) const;
+
+        void dump() const;
+
+    private:
+        double calc_rescale();
+        glm::dvec2 inverse_undistort(const std::vector<double>& params,
+                const glm::dvec2& pt);
+        glm::dvec2 undistort(const std::vector<double>& params, const glm::dvec2& pt);
+        glm::dvec2 trapezoid(const double trapezoid_factor, const glm::dvec2& pt);
+        glm::dvec2 inv_trapezoid(const double trapezoid_factor, const glm::dvec2& pt);
+
+        glm::dvec2 m_CamExtents;
+        std::vector<double> m_DistortionParams;
+        double m_Angle;
+        double m_TrapezoidFactor;
+        glm::dvec2 m_DisplayOffset;
+        glm::dvec2 m_DisplayScale;
+        
+        double m_RescaleFactor;
+};
+
+typedef boost::shared_ptr<DeDistort> DeDistortPtr;
+
+}
+#endif