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+/*M///////////////////////////////////////////////////////////////////////////////////////
+//
+// IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
+//
+// By downloading, copying, installing or using the software you agree to this license.
+// If you do not agree to this license, do not download, install,
+// copy or use the software.
+//
+// Copyright (C) 2013, Alfonso Sanchez-Beato, all rights reserved.
+// Third party copyrights are property of their respective owners.
+//
+// Redistribution and use in source and binary forms, with or without modification,
+// are permitted provided that the following conditions are met:
+//
+// * Redistribution's of source code must retain the above copyright notice,
+// this list of conditions and the following disclaimer.
+//
+// * Redistribution's in binary form must reproduce the above copyright notice,
+// this list of conditions and the following disclaimer in the documentation
+// and/or other materials provided with the distribution.
+//
+// * The name of the copyright holders may not be used to endorse or promote products
+// derived from this software without specific prior written permission.
+//
+// This software is provided by the copyright holders and contributors "as is" and
+// any express or implied warranties, including, but not limited to, the implied
+// warranties of merchantability and fitness for a particular purpose are disclaimed.
+// In no event shall the contributors be liable for any direct,
+// indirect, incidental, special, exemplary, or consequential damages
+// (including, but not limited to, procurement of substitute goods or services;
+// loss of use, data, or profits; or business interruption) however caused
+// and on any theory of liability, whether in contract, strict liability,
+// or tort (including negligence or otherwise) arising in any way out of
+// the use of this software, even if advised of the possibility of such damage.
+//
+//M*/
+
+#ifndef MAPSHIFT_H_
+#define MAPSHIFT_H_
+
+#include "map.hpp"
+
+
+namespace cv {
+namespace reg {
+
+//! @addtogroup reg
+//! @{
+
+/*!
+ * Defines an transformation that consists on a simple displacement
+ */
+class CV_EXPORTS MapShift : public Map
+{
+public:
+ /*!
+ * Default constructor builds an identity map
+ */
+ MapShift(void);
+
+ /*!
+ * Constructor providing explicit values
+ * \param[in] shift Displacement
+ */
+ MapShift(const cv::Vec<double, 2>& shift);
+
+ /*!
+ * Destructor
+ */
+ ~MapShift(void);
+
+ void inverseWarp(const cv::Mat& img1, cv::Mat& img2) const;
+
+ cv::Ptr<Map> inverseMap(void) const;
+
+ void compose(const Map& map);
+
+ void scale(double factor);
+
+ /*!
+ * Return displacement
+ * \return Displacement
+ */
+ const cv::Vec<double, 2>& getShift() const {
+ return shift_;
+ }
+
+private:
+ cv::Vec<double, 2> shift_; /*< Displacement */
+};
+
+//! @}
+
+}} // namespace cv::reg
+
+#endif // MAPSHIFT_H_