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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.
+//
+//
+//                           License Agreement
+//                For Open Source Computer Vision Library
+//
+// Copyright (C) 2000-2008, Intel Corporation, all rights reserved.
+// Copyright (C) 2009-2012, Willow Garage Inc., 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 Intel Corporation or 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 OPENCV_EMD_L1_HPP
+#define OPENCV_EMD_L1_HPP
+
+#include "opencv2/core.hpp"
+
+namespace cv
+{
+/****************************************************************************************\
+*                                   EMDL1 Function                                      *
+\****************************************************************************************/
+
+//! @addtogroup shape
+//! @{
+
+/** @brief Computes the "minimal work" distance between two weighted point configurations base on the papers
+"EMD-L1: An efficient and Robust Algorithm for comparing histogram-based descriptors", by Haibin
+Ling and Kazunori Okuda; and "The Earth Mover's Distance is the Mallows Distance: Some Insights from
+Statistics", by Elizaveta Levina and Peter Bickel.
+
+@param signature1 First signature, a single column floating-point matrix. Each row is the value of
+the histogram in each bin.
+@param signature2 Second signature of the same format and size as signature1.
+ */
+CV_EXPORTS float EMDL1(InputArray signature1, InputArray signature2);
+
+//! @}
+
+}//namespace cv
+
+#endif