diff --git a/modules/reg/include/opencv2/reg/map.hpp b/modules/reg/include/opencv2/reg/map.hpp
index 26b29e38e..a885a2844 100644
--- a/modules/reg/include/opencv2/reg/map.hpp
+++ b/modules/reg/include/opencv2/reg/map.hpp
@@ -121,13 +121,13 @@ namespace reg {
 
 The class is only used to define the common interface for any possible map.
  */
-class CV_EXPORTS Map
+class CV_EXPORTS_W Map
 {
 public:
     /*!
      * Virtual destructor
      */
-    virtual ~Map(void);
+    virtual ~Map();
 
     /*!
      * Warps image to a new coordinate frame. The calculation is img2(x)=img1(T^{-1}(x)), as we
@@ -136,7 +136,7 @@ public:
      * \param[in] img1 Original image
      * \param[out] img2 Warped image
      */
-    virtual void warp(const cv::Mat& img1, cv::Mat& img2) const;
+    CV_WRAP virtual void warp(InputArray img1, OutputArray img2) const;
 
     /*!
      * Warps image to a new coordinate frame. The calculation is img2(x)=img1(T(x)), so in fact
@@ -145,27 +145,27 @@ public:
      * \param[in] img1 Original image
      * \param[out] img2 Warped image
      */
-    virtual void inverseWarp(const cv::Mat& img1, cv::Mat& img2) const = 0;
+    CV_WRAP virtual void inverseWarp(InputArray img1, OutputArray img2) const = 0;
 
     /*!
      * Calculates the inverse map
      * \return Inverse map
      */
-    virtual cv::Ptr<Map> inverseMap(void) const = 0;
+    CV_WRAP virtual cv::Ptr<Map> inverseMap() const = 0;
 
     /*!
      * Changes the map composing the current transformation with the one provided in the call.
      * The order is first the current transformation, then the input argument.
      * \param[in] map Transformation to compose with.
      */
-    virtual void compose(const Map& map) = 0;
+    CV_WRAP virtual void compose(cv::Ptr<Map> map) = 0;
 
     /*!
      * Scales the map by a given factor as if the coordinates system is expanded/compressed
      * by that factor.
      * \param[in] factor Expansion if bigger than one, compression if smaller than one
      */
-    virtual void scale(double factor) = 0;
+    CV_WRAP virtual void scale(double factor) = 0;
 };
 
 //! @}
diff --git a/modules/reg/include/opencv2/reg/mapaffine.hpp b/modules/reg/include/opencv2/reg/mapaffine.hpp
index 1c9132633..1843d8431 100644
--- a/modules/reg/include/opencv2/reg/mapaffine.hpp
+++ b/modules/reg/include/opencv2/reg/mapaffine.hpp
@@ -49,13 +49,13 @@ namespace reg {
 /*!
  * Defines an affine transformation
  */
-class CV_EXPORTS MapAffine : public Map
+class CV_EXPORTS_W MapAffine : public Map
 {
 public:
     /*!
      * Default constructor builds an identity map
      */
-    MapAffine(void);
+    CV_WRAP MapAffine();
 
     /*!
      * Constructor providing explicit values
@@ -67,15 +67,15 @@ public:
     /*!
      * Destructor
      */
-    ~MapAffine(void);
+    ~MapAffine();
 
-    void inverseWarp(const cv::Mat& img1, cv::Mat& img2) const;
+    CV_WRAP void inverseWarp(InputArray img1, OutputArray img2) const;
 
-    cv::Ptr<Map> inverseMap(void) const;
+    CV_WRAP cv::Ptr<Map> inverseMap() const;
 
-    void compose(const Map& map);
+    CV_WRAP void compose(cv::Ptr<Map> map);
 
-    void scale(double factor);
+    CV_WRAP void scale(double factor);
 
     /*!
      * Return linear part of the affine transformation
@@ -85,6 +85,10 @@ public:
         return linTr_;
     }
 
+    CV_WRAP void getLinTr(OutputArray linTr) const {
+        Mat(linTr_).copyTo(linTr);
+    }
+
     /*!
      * Return displacement part of the affine transformation
      * \return Displacement part of the affine transformation
@@ -93,6 +97,10 @@ public:
         return shift_;
     }
 
+    CV_WRAP void getShift(OutputArray shift) const {
+        Mat(shift_).copyTo(shift);
+    }
+
 private:
     cv::Matx<double, 2, 2> linTr_;
     cv::Vec<double, 2> shift_;
diff --git a/modules/reg/include/opencv2/reg/mapper.hpp b/modules/reg/include/opencv2/reg/mapper.hpp
index 8abadd14e..2c2862d49 100644
--- a/modules/reg/include/opencv2/reg/mapper.hpp
+++ b/modules/reg/include/opencv2/reg/mapper.hpp
@@ -47,11 +47,11 @@ namespace reg {
 //! @addtogroup reg
 //! @{
 
-/** @brief Base class for modelling an algorithm for calculating a
+/** @brief Base class for modelling an algorithm for calculating a map
 
 The class is only used to define the common interface for any possible mapping algorithm.
  */
-class CV_EXPORTS Mapper
+class CV_EXPORTS_W Mapper
 {
 public:
     virtual ~Mapper(void) {}
@@ -60,16 +60,16 @@ public:
      * Calculate mapping between two images
      * \param[in] img1 Reference image
      * \param[in] img2 Warped image
-     * \param[in,out] res Map from img1 to img2, stored in a smart pointer. If present as input,
-     *       it is an initial rough estimation that the mapper will try to refine.
+     * \param[in] If present, it is an initial rough estimation that the mapper will try to refine.
+     * \return Map from img1 to img2, stored in a smart pointer.
      */
-    virtual void calculate(const cv::Mat& img1, const cv::Mat& img2, cv::Ptr<Map>& res) const = 0;
+    CV_WRAP virtual cv::Ptr<Map> calculate(InputArray img1, InputArray img2, cv::Ptr<Map> init = cv::Ptr<Map>()) const = 0;
 
     /*
      * Returns a map compatible with the Mapper class
      * \return Pointer to identity Map
      */
-    virtual cv::Ptr<Map> getMap(void) const = 0;
+    CV_WRAP virtual cv::Ptr<Map> getMap() const = 0;
 
 protected:
     /*
diff --git a/modules/reg/include/opencv2/reg/mappergradaffine.hpp b/modules/reg/include/opencv2/reg/mappergradaffine.hpp
index 08d539711..8b0d7b41f 100644
--- a/modules/reg/include/opencv2/reg/mappergradaffine.hpp
+++ b/modules/reg/include/opencv2/reg/mappergradaffine.hpp
@@ -49,15 +49,15 @@ namespace reg {
 /*!
  * Mapper for affine motion
  */
-class CV_EXPORTS MapperGradAffine: public Mapper
+class CV_EXPORTS_W MapperGradAffine: public Mapper
 {
 public:
-    MapperGradAffine(void);
+    CV_WRAP MapperGradAffine();
     ~MapperGradAffine(void);
 
-    virtual void calculate(const cv::Mat& img1, const cv::Mat& img2, cv::Ptr<Map>& res) const;
+    CV_WRAP virtual cv::Ptr<Map> calculate(InputArray img1, InputArray img2, cv::Ptr<Map> init = cv::Ptr<Map>()) const;
 
-    cv::Ptr<Map> getMap(void) const;
+    CV_WRAP cv::Ptr<Map> getMap() const;
 };
 
 //! @}
diff --git a/modules/reg/include/opencv2/reg/mappergradeuclid.hpp b/modules/reg/include/opencv2/reg/mappergradeuclid.hpp
index 29c49cb65..c41a5f7f0 100644
--- a/modules/reg/include/opencv2/reg/mappergradeuclid.hpp
+++ b/modules/reg/include/opencv2/reg/mappergradeuclid.hpp
@@ -49,15 +49,15 @@ namespace reg {
 /*!
  * Mapper for euclidean motion: rotation plus shift
  */
-class CV_EXPORTS MapperGradEuclid: public Mapper
+class CV_EXPORTS_W MapperGradEuclid: public Mapper
 {
 public:
-    MapperGradEuclid(void);
-    ~MapperGradEuclid(void);
+    CV_WRAP MapperGradEuclid();
+    ~MapperGradEuclid();
 
-    virtual void calculate(const cv::Mat& img1, const cv::Mat& img2, cv::Ptr<Map>& res) const;
+    CV_WRAP virtual cv::Ptr<Map> calculate(InputArray img1, InputArray img2, cv::Ptr<Map> init = cv::Ptr<Map>()) const;
 
-    cv::Ptr<Map> getMap(void) const;
+    CV_WRAP cv::Ptr<Map> getMap() const;
 };
 
 //! @}
diff --git a/modules/reg/include/opencv2/reg/mappergradproj.hpp b/modules/reg/include/opencv2/reg/mappergradproj.hpp
index f1721e820..5d83fc4f0 100644
--- a/modules/reg/include/opencv2/reg/mappergradproj.hpp
+++ b/modules/reg/include/opencv2/reg/mappergradproj.hpp
@@ -49,15 +49,15 @@ namespace reg {
 /*!
  * Gradient mapper for a projective transformation
  */
-class CV_EXPORTS MapperGradProj: public Mapper
+class CV_EXPORTS_W MapperGradProj: public Mapper
 {
 public:
-    MapperGradProj(void);
-    ~MapperGradProj(void);
+    CV_WRAP MapperGradProj();
+    ~MapperGradProj();
 
-    virtual void calculate(const cv::Mat& img1, const cv::Mat& img2, cv::Ptr<Map>& res) const;
+    CV_WRAP virtual cv::Ptr<Map> calculate(InputArray img1, InputArray img2, cv::Ptr<Map> init = cv::Ptr<Map>()) const;
 
-    cv::Ptr<Map> getMap(void) const;
+    CV_WRAP cv::Ptr<Map> getMap() const;
 };
 
 //! @}
diff --git a/modules/reg/include/opencv2/reg/mappergradshift.hpp b/modules/reg/include/opencv2/reg/mappergradshift.hpp
index a9f75b3a6..3a3642758 100644
--- a/modules/reg/include/opencv2/reg/mappergradshift.hpp
+++ b/modules/reg/include/opencv2/reg/mappergradshift.hpp
@@ -49,15 +49,15 @@ namespace reg {
 /*!
  * Gradient mapper for a translation
  */
-class CV_EXPORTS MapperGradShift: public Mapper
+class CV_EXPORTS_W MapperGradShift: public Mapper
 {
 public:
-    MapperGradShift(void);
-    virtual ~MapperGradShift(void);
+    CV_WRAP MapperGradShift();
+    virtual ~MapperGradShift();
 
-    virtual void calculate(const cv::Mat& img1, const cv::Mat& img2, cv::Ptr<Map>& res) const;
+    CV_WRAP virtual cv::Ptr<Map> calculate(InputArray img1, InputArray img2, cv::Ptr<Map> init = cv::Ptr<Map>()) const;
 
-    cv::Ptr<Map> getMap(void) const;
+    CV_WRAP cv::Ptr<Map> getMap() const;
 };
 
 //! @}
diff --git a/modules/reg/include/opencv2/reg/mappergradsimilar.hpp b/modules/reg/include/opencv2/reg/mappergradsimilar.hpp
index ea45ab912..6382180cc 100644
--- a/modules/reg/include/opencv2/reg/mappergradsimilar.hpp
+++ b/modules/reg/include/opencv2/reg/mappergradsimilar.hpp
@@ -49,15 +49,15 @@ namespace reg {
 /*!
  * Calculates a similarity transformation between to images (scale, rotation, and shift)
  */
-class CV_EXPORTS MapperGradSimilar: public Mapper
+class CV_EXPORTS_W MapperGradSimilar: public Mapper
 {
 public:
-    MapperGradSimilar(void);
-    ~MapperGradSimilar(void);
+    CV_WRAP MapperGradSimilar();
+    ~MapperGradSimilar();
 
-    virtual void calculate(const cv::Mat& img1, const cv::Mat& img2, cv::Ptr<Map>& res) const;
+    CV_WRAP virtual cv::Ptr<Map> calculate(InputArray img1, InputArray img2, cv::Ptr<Map> init = cv::Ptr<Map>()) const;
 
-    cv::Ptr<Map> getMap(void) const;
+    CV_WRAP cv::Ptr<Map> getMap() const;
 };
 
 //! @}
diff --git a/modules/reg/include/opencv2/reg/mapperpyramid.hpp b/modules/reg/include/opencv2/reg/mapperpyramid.hpp
index 33440bdae..f9fbd0181 100644
--- a/modules/reg/include/opencv2/reg/mapperpyramid.hpp
+++ b/modules/reg/include/opencv2/reg/mapperpyramid.hpp
@@ -39,7 +39,9 @@
 #define MAPPERPYRAMID_H_
 
 #include "mapper.hpp"
-
+#include "mapaffine.hpp"
+#include "mapprojec.hpp"
+#include "mapshift.hpp"
 
 namespace cv {
 namespace reg {
@@ -50,27 +52,52 @@ namespace reg {
 /*!
  * Calculates a map using a gaussian pyramid
  */
-class CV_EXPORTS MapperPyramid: public Mapper
+class CV_EXPORTS_W MapperPyramid: public Mapper
 {
 public:
     /*
      * Constructor
      * \param[in] baseMapper Base mapper used for the refinements
      */
-    MapperPyramid(const Mapper& baseMapper);
+    CV_WRAP MapperPyramid(Ptr<Mapper> baseMapper);
 
-    void calculate(const cv::Mat& img1, const cv::Mat& img2, cv::Ptr<Map>& res) const;
+    CV_WRAP virtual cv::Ptr<Map> calculate(InputArray img1, InputArray img2, cv::Ptr<Map> init = cv::Ptr<Map>()) const;
 
-    cv::Ptr<Map> getMap(void) const;
+    CV_WRAP cv::Ptr<Map> getMap() const;
 
-    unsigned numLev_;           /*!< Number of levels of the pyramid */
-    unsigned numIterPerScale_;  /*!< Number of iterations at a given scale of the pyramid */
+    CV_PROP_RW int numLev_;           /*!< Number of levels of the pyramid */
+    CV_PROP_RW int numIterPerScale_;  /*!< Number of iterations at a given scale of the pyramid */
 
 private:
     MapperPyramid& operator=(const MapperPyramid&);
     const Mapper& baseMapper_;  /*!< Mapper used in inner level */
 };
 
+/*!
+ * Converts a pointer to a Map returned by MapperPyramid::calculate into the specified Map pointer type
+ */
+class CV_EXPORTS_W MapTypeCaster
+{
+public:
+    CV_WRAP static Ptr<MapAffine> toAffine(Ptr<Map> sourceMap)
+    {
+        MapAffine& affineMap = dynamic_cast<MapAffine&>(*sourceMap);
+        return Ptr<MapAffine>(new MapAffine(affineMap));
+    }
+
+    CV_WRAP static Ptr<MapShift> toShift(Ptr<Map> sourceMap)
+    {
+        MapShift& shiftMap = dynamic_cast<MapShift&>(*sourceMap);
+        return Ptr<MapShift>(new MapShift(shiftMap));
+    }
+
+    CV_WRAP static Ptr<MapProjec> toProjec(Ptr<Map> sourceMap)
+    {
+        MapProjec& projecMap = dynamic_cast<MapProjec&>(*sourceMap);
+        return Ptr<MapProjec>(new MapProjec(projecMap));
+    }
+};
+
 //! @}
 
 }}  // namespace cv::reg
diff --git a/modules/reg/include/opencv2/reg/mapprojec.hpp b/modules/reg/include/opencv2/reg/mapprojec.hpp
index 57ef14600..356b18552 100644
--- a/modules/reg/include/opencv2/reg/mapprojec.hpp
+++ b/modules/reg/include/opencv2/reg/mapprojec.hpp
@@ -50,13 +50,13 @@ namespace reg {
 /*!
  * Defines an transformation that consists on a projective transformation
  */
-class CV_EXPORTS MapProjec : public Map
+class CV_EXPORTS_W MapProjec : public Map
 {
 public:
     /*!
      * Default constructor builds an identity map
      */
-    MapProjec(void);
+    CV_WRAP MapProjec();
 
     /*!
      * Constructor providing explicit values
@@ -67,15 +67,15 @@ public:
     /*!
      * Destructor
      */
-    ~MapProjec(void);
+    ~MapProjec();
 
-    void inverseWarp(const cv::Mat& img1, cv::Mat& img2) const;
+    CV_WRAP void inverseWarp(InputArray img1, OutputArray img2) const;
 
-    cv::Ptr<Map> inverseMap(void) const;
+    CV_WRAP cv::Ptr<Map> inverseMap() const;
 
-    void compose(const Map& map);
+    CV_WRAP void compose(cv::Ptr<Map> map);
 
-    void scale(double factor);
+    CV_WRAP void scale(double factor);
 
     /*!
      * Returns projection matrix
@@ -85,10 +85,14 @@ public:
         return projTr_;
     }
 
+    CV_WRAP void getProjTr(OutputArray projTr) const {
+        Mat(projTr_).copyTo(projTr);
+    }
+
     /*!
      * Normalizes object's homography
      */
-    void normalize(void) {
+    CV_WRAP void normalize() {
         double z = 1./projTr_(2, 2);
         for(size_t v_i = 0; v_i < sizeof(projTr_.val)/sizeof(projTr_.val[0]); ++v_i)
             projTr_.val[v_i] *= z;
diff --git a/modules/reg/include/opencv2/reg/mapshift.hpp b/modules/reg/include/opencv2/reg/mapshift.hpp
index e5f54a4ce..c7119440a 100644
--- a/modules/reg/include/opencv2/reg/mapshift.hpp
+++ b/modules/reg/include/opencv2/reg/mapshift.hpp
@@ -50,32 +50,33 @@ namespace reg {
 /*!
  * Defines an transformation that consists on a simple displacement
  */
-class CV_EXPORTS MapShift : public Map
+class CV_EXPORTS_W MapShift : public Map
 {
 public:
     /*!
      * Default constructor builds an identity map
      */
-    MapShift(void);
+    CV_WRAP MapShift();
 
     /*!
      * Constructor providing explicit values
      * \param[in] shift Displacement
      */
-    MapShift(const cv::Vec<double, 2>& shift);
+
+    CV_WRAP MapShift(InputArray shift);
 
     /*!
      * Destructor
      */
-    ~MapShift(void);
+    ~MapShift();
 
-    void inverseWarp(const cv::Mat& img1, cv::Mat& img2) const;
+    CV_WRAP void inverseWarp(InputArray img1, OutputArray img2) const;
 
-    cv::Ptr<Map> inverseMap(void) const;
+    CV_WRAP cv::Ptr<Map> inverseMap() const;
 
-    void compose(const Map& map);
+    CV_WRAP void compose(cv::Ptr<Map> map);
 
-    void scale(double factor);
+    CV_WRAP void scale(double factor);
 
     /*!
      * Return displacement
@@ -85,6 +86,10 @@ public:
         return shift_;
     }
 
+    CV_WRAP void getShift(OutputArray shift) const {
+        Mat(shift_).copyTo(shift);
+    }
+
 private:
     cv::Vec<double, 2> shift_;      /*< Displacement */
 };
diff --git a/modules/reg/perf/perf_reg.cpp b/modules/reg/perf/perf_reg.cpp
index 3622f4bed..c0e2ce934 100644
--- a/modules/reg/perf/perf_reg.cpp
+++ b/modules/reg/perf/perf_reg.cpp
@@ -72,10 +72,9 @@ Vec<double, 2> perfShift(const Mat& img1)
     mapTest.warp(img1, img2);
 
     // Register
-    MapperGradShift mapper;
+    Ptr<MapperGradShift> mapper = makePtr<MapperGradShift>();
     MapperPyramid mappPyr(mapper);
-    Ptr<Map> mapPtr;
-    mappPyr.calculate(img1, img2, mapPtr);
+    Ptr<Map> mapPtr = mappPyr.calculate(img1, img2);
 
     MapShift* mapShift = dynamic_cast<MapShift*>(mapPtr.get());
     return mapShift->getShift();
@@ -96,10 +95,9 @@ Matx<double, 2, 6> perfEuclidean(const Mat& img1)
     mapTest.warp(img1, img2);
 
     // Register
-    MapperGradEuclid mapper;
+    Ptr<MapperGradEuclid> mapper = makePtr<MapperGradEuclid>();
     MapperPyramid mappPyr(mapper);
-    Ptr<Map> mapPtr;
-    mappPyr.calculate(img1, img2, mapPtr);
+    Ptr<Map> mapPtr = mappPyr.calculate(img1, img2);
 
     MapAffine* mapAff = dynamic_cast<MapAffine*>(mapPtr.get());
     Matx<double, 2, 2> resLinTr = mapAff->getLinTr();
@@ -127,10 +125,9 @@ Matx<double, 2, 6> perfSimilarity(const Mat& img1)
     mapTest.warp(img1, img2);
 
     // Register
-    MapperGradSimilar mapper;
+    Ptr<MapperGradSimilar> mapper = makePtr<MapperGradSimilar>();
     MapperPyramid mappPyr(mapper);
-    Ptr<Map> mapPtr;
-    mappPyr.calculate(img1, img2, mapPtr);
+    Ptr<Map> mapPtr = mappPyr.calculate(img1, img2);
 
     MapAffine* mapAff = dynamic_cast<MapAffine*>(mapPtr.get());
     Matx<double, 2, 2> resLinTr = mapAff->getLinTr();
@@ -154,10 +151,9 @@ Matx<double, 2, 6> perfAffine(const Mat& img1)
     mapTest.warp(img1, img2);
 
     // Register
-    MapperGradAffine mapper;
+    Ptr<MapperGradAffine> mapper = makePtr<MapperGradAffine>();
     MapperPyramid mappPyr(mapper);
-    Ptr<Map> mapPtr;
-    mappPyr.calculate(img1, img2, mapPtr);
+    Ptr<Map> mapPtr = mappPyr.calculate(img1, img2);
 
     MapAffine* mapAff = dynamic_cast<MapAffine*>(mapPtr.get());
     Matx<double, 2, 2> resLinTr = mapAff->getLinTr();
@@ -179,10 +175,9 @@ Matx<double, 3, 3> perfProjective(const Mat& img1)
     mapTest.warp(img1, img2);
 
     // Register
-    MapperGradProj mapper;
+    Ptr<MapperGradProj> mapper = makePtr<MapperGradProj>();
     MapperPyramid mappPyr(mapper);
-    Ptr<Map> mapPtr;
-    mappPyr.calculate(img1, img2, mapPtr);
+    Ptr<Map> mapPtr = mappPyr.calculate(img1, img2);
 
     MapProjec* mapProj = dynamic_cast<MapProjec*>(mapPtr.get());
     mapProj->normalize();
diff --git a/modules/reg/samples/map_test.cpp b/modules/reg/samples/map_test.cpp
index 607b3f289..c59ce96ed 100644
--- a/modules/reg/samples/map_test.cpp
+++ b/modules/reg/samples/map_test.cpp
@@ -99,10 +99,9 @@ static void testShift(const Mat& img1)
     showDifference(img1, img2, DIFF_IM);
 
     // Register
-    MapperGradShift mapper;
+    Ptr<MapperGradShift> mapper = makePtr<MapperGradShift>();
     MapperPyramid mappPyr(mapper);
-    Ptr<Map> mapPtr;
-    mappPyr.calculate(img1, img2, mapPtr);
+    Ptr<Map> mapPtr = mappPyr.calculate(img1, img2);
 
     // Print result
     MapShift* mapShift = dynamic_cast<MapShift*>(mapPtr.get());
@@ -135,10 +134,9 @@ static void testEuclidean(const Mat& img1)
     showDifference(img1, img2, DIFF_IM);
 
     // Register
-    MapperGradEuclid mapper;
+    Ptr<MapperGradEuclid> mapper = makePtr<MapperGradEuclid>();
     MapperPyramid mappPyr(mapper);
-    Ptr<Map> mapPtr;
-    mappPyr.calculate(img1, img2, mapPtr);
+    Ptr<Map> mapPtr = mappPyr.calculate(img1, img2);
 
     // Print result
     MapAffine* mapAff = dynamic_cast<MapAffine*>(mapPtr.get());
@@ -174,10 +172,9 @@ static void testSimilarity(const Mat& img1)
     showDifference(img1, img2, DIFF_IM);
 
     // Register
-    MapperGradSimilar mapper;
+    Ptr<MapperGradSimilar> mapper = makePtr<MapperGradSimilar>();
     MapperPyramid mappPyr(mapper);
-    Ptr<Map> mapPtr;
-    mappPyr.calculate(img1, img2, mapPtr);
+    Ptr<Map> mapPtr = mappPyr.calculate(img1, img2);
 
     // Print result
     MapAffine* mapAff = dynamic_cast<MapAffine*>(mapPtr.get());
@@ -209,10 +206,9 @@ static void testAffine(const Mat& img1)
     showDifference(img1, img2, DIFF_IM);
 
     // Register
-    MapperGradAffine mapper;
+    Ptr<MapperGradAffine> mapper = makePtr<MapperGradAffine>();
     MapperPyramid mappPyr(mapper);
-    Ptr<Map> mapPtr;
-    mappPyr.calculate(img1, img2, mapPtr);
+    Ptr<Map> mapPtr = mappPyr.calculate(img1, img2);
 
     // Print result
     MapAffine* mapAff = dynamic_cast<MapAffine*>(mapPtr.get());
@@ -243,10 +239,9 @@ static void testProjective(const Mat& img1)
     showDifference(img1, img2, DIFF_IM);
 
     // Register
-    MapperGradProj mapper;
+    Ptr<MapperGradProj> mapper = makePtr<MapperGradProj>();
     MapperPyramid mappPyr(mapper);
-    Ptr<Map> mapPtr;
-    mappPyr.calculate(img1, img2, mapPtr);
+    Ptr<Map> mapPtr = mappPyr.calculate(img1, img2);
 
     // Print result
     MapProjec* mapProj = dynamic_cast<MapProjec*>(mapPtr.get());
@@ -347,7 +342,7 @@ static void calcHomographyFeature(const Mat& image1, const Mat& image2)
     warpPerspective(image2, result, Hinv, image1.size());
 
     cout << "--- Feature method\n" << H << endl;
-    
+
     Mat imf1, resf;
     image1.convertTo(imf1, CV_64FC3);
     result.convertTo(resf, CV_64FC3);
@@ -359,10 +354,9 @@ static void calcHomographyPixel(const Mat& img1, const Mat& img2)
     static const char* diffpixel = "Difference pixel registered";
 
     // Register using pixel differences
-    MapperGradProj mapper;
+    Ptr<MapperGradProj> mapper = makePtr<MapperGradProj>();
     MapperPyramid mappPyr(mapper);
-    Ptr<Map> mapPtr;
-    mappPyr.calculate(img1, img2, mapPtr);
+    Ptr<Map> mapPtr = mappPyr.calculate(img1, img2);
 
     // Print result
     MapProjec* mapProj = dynamic_cast<MapProjec*>(mapPtr.get());
@@ -398,7 +392,7 @@ static void comparePixelVsFeature(const Mat& img1_8b, const Mat& img2_8b)
 
 int main(void)
 {
-    Mat img1;    
+    Mat img1;
     img1 = imread("home.png", CV_LOAD_IMAGE_UNCHANGED);
     if(!img1.data) {
         cout <<  "Could not open or find file" << endl;
diff --git a/modules/reg/samples/reg_shift.py b/modules/reg/samples/reg_shift.py
new file mode 100755
index 000000000..8ee415471
--- /dev/null
+++ b/modules/reg/samples/reg_shift.py
@@ -0,0 +1,20 @@
+#!/usr/bin/python
+
+import cv2
+import numpy as np
+import sys
+
+img1 = cv2.imread(sys.argv[1])
+img1 = img1.astype(np.float32)
+shift = np.array([5., 5.])
+mapTest = cv2.reg.MapShift(shift)
+
+img2 = mapTest.warp(img1)
+
+mapper = cv2.reg.MapperGradShift()
+mappPyr = cv2.reg.MapperPyramid(mapper)
+
+resMap = mappPyr.calculate(img1, img2)
+mapShift = cv2.reg.MapTypeCaster_toShift(resMap)
+
+print(mapShift.getShift())
diff --git a/modules/reg/src/map.cpp b/modules/reg/src/map.cpp
index aff9700d6..58f872751 100644
--- a/modules/reg/src/map.cpp
+++ b/modules/reg/src/map.cpp
@@ -44,12 +44,12 @@ namespace reg {
 
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
-Map::~Map(void)
+Map::~Map()
 {
 }
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
-void Map::warp(const Mat& img1, Mat& img2) const
+void Map::warp(InputArray img1, OutputArray img2) const
 {
     Ptr<Map> invMap(inverseMap());
     invMap->inverseWarp(img1, img2);
diff --git a/modules/reg/src/mapaffine.cpp b/modules/reg/src/mapaffine.cpp
index 781ec24ad..b9d38d7b6 100644
--- a/modules/reg/src/mapaffine.cpp
+++ b/modules/reg/src/mapaffine.cpp
@@ -45,7 +45,7 @@ namespace reg {
 
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
-MapAffine::MapAffine(void)
+MapAffine::MapAffine()
     : linTr_(Matx<double, 2, 2>::eye()), shift_()
 {
 }
@@ -57,13 +57,14 @@ MapAffine::MapAffine(const Matx<double, 2, 2>& linTr, const Vec<double, 2>& shif
 }
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
-MapAffine::~MapAffine(void)
+MapAffine::~MapAffine()
 {
 }
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
-void MapAffine::inverseWarp(const Mat& img1, Mat& img2) const
+void MapAffine::inverseWarp(InputArray _img1, OutputArray img2) const
 {
+    Mat img1 = _img1.getMat();
     // Rows and columns in destination
     Mat dest_r, dest_c;
     dest_r.create(img1.size(), CV_32FC1);
@@ -93,10 +94,10 @@ Ptr<Map> MapAffine::inverseMap(void) const
 }
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
-void MapAffine::compose(const Map& map)
+void MapAffine::compose(cv::Ptr<Map> map)
 {
     // Composition of affine transformations T and T' is (T o T') = A'Ax + A'b + b'
-    const MapAffine& mapAff = static_cast<const MapAffine&>(map);
+    const MapAffine& mapAff = static_cast<const MapAffine&>(*map);
     Matx<double, 2, 2> compMat = mapAff.getLinTr()*linTr_;
     Vec<double, 2> compShift = mapAff.getLinTr()*shift_ + mapAff.getShift();
     linTr_ = compMat;
diff --git a/modules/reg/src/mapper.cpp b/modules/reg/src/mapper.cpp
index e338c6c51..a2eb4f2a4 100644
--- a/modules/reg/src/mapper.cpp
+++ b/modules/reg/src/mapper.cpp
@@ -59,28 +59,45 @@ void Mapper::gradient(const Mat& img1, const Mat& img2, Mat& Ix, Mat& Iy, Mat& I
 }
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
-void Mapper::grid(const Mat& img, Mat& grid_r, Mat& grid_c) const
+
+template<typename _Tp>
+void fillGridMatrices(const Mat img, Mat grid_r, Mat grid_c)
 {
-    // Matrices with reference frame coordinates
-    grid_r.create(img.size(), img.type());
-    grid_c.create(img.size(), img.type());
     if(img.channels() == 1) {
         for(int r_i = 0; r_i < img.rows; ++r_i) {
             for(int c_i = 0; c_i < img.cols; ++c_i) {
-                grid_r.at<double>(r_i, c_i) = r_i;
-                grid_c.at<double>(r_i, c_i) = c_i;
+                grid_r.at<_Tp>(r_i, c_i) = (_Tp)r_i;
+                grid_c.at<_Tp>(r_i, c_i) = (_Tp)c_i;
             }
         }
     } else {
-        Vec3d ones(1., 1., 1.);
+        Vec<_Tp, 3> ones((_Tp)1, (_Tp)1, (_Tp)1);
         for(int r_i = 0; r_i < img.rows; ++r_i) {
             for(int c_i = 0; c_i < img.cols; ++c_i) {
-                grid_r.at<Vec3d>(r_i, c_i) = r_i*ones;
-                grid_c.at<Vec3d>(r_i, c_i) = c_i*ones;
+                grid_r.at< Vec<_Tp, 3> >(r_i, c_i) = (_Tp)r_i*ones;
+                grid_c.at< Vec<_Tp, 3> >(r_i, c_i) = (_Tp)c_i*ones;
             }
         }
     }
 }
 
+void Mapper::grid(const Mat& img, Mat& grid_r, Mat& grid_c) const
+{
+    CV_DbgAssert(img.channels() == 1 || img.channels() == 3);
+
+    // Matrices with reference frame coordinates
+    grid_r.create(img.size(), img.type());
+    grid_c.create(img.size(), img.type());
+
+    if(img.depth() == CV_8U)
+        fillGridMatrices<uchar>(img, grid_r, grid_c);
+    if(img.depth() == CV_16U)
+        fillGridMatrices<ushort>(img, grid_r, grid_c);
+    else if(img.depth() == CV_32F)
+        fillGridMatrices<float>(img, grid_r, grid_c);
+    else if(img.depth() == CV_64F)
+        fillGridMatrices<double>(img, grid_r, grid_c);
+}
+
 
 }}  // namespace cv::reg
diff --git a/modules/reg/src/mappergradaffine.cpp b/modules/reg/src/mappergradaffine.cpp
index fd698c452..77b537770 100644
--- a/modules/reg/src/mappergradaffine.cpp
+++ b/modules/reg/src/mappergradaffine.cpp
@@ -44,21 +44,21 @@ namespace reg {
 
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
-MapperGradAffine::MapperGradAffine(void)
+MapperGradAffine::MapperGradAffine()
 {
 }
 
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
-MapperGradAffine::~MapperGradAffine(void)
+MapperGradAffine::~MapperGradAffine()
 {
 }
 
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
-void MapperGradAffine::calculate(
-    const cv::Mat& img1, const cv::Mat& image2, cv::Ptr<Map>& res) const
+cv::Ptr<Map> MapperGradAffine::calculate(InputArray _img1, InputArray image2, cv::Ptr<Map> init) const
 {
+    Mat img1 = _img1.getMat();
     Mat gradx, grady, imgDiff;
     Mat img2;
 
@@ -66,11 +66,11 @@ void MapperGradAffine::calculate(
     CV_DbgAssert(img1.channels() == image2.channels());
     CV_DbgAssert(img1.channels() == 1 || img1.channels() == 3);
 
-    if(!res.empty()) {
+    if(!init.empty()) {
         // We have initial values for the registration: we move img2 to that initial reference
-        res->inverseWarp(image2, img2);
+        init->inverseWarp(image2, img2);
     } else {
-        img2 = image2;
+        img2 = image2.getMat();
     }
 
     // Get gradient in all channels
@@ -145,16 +145,19 @@ void MapperGradAffine::calculate(
 
     Matx<double, 2, 2> linTr(k(0) + 1., k(1), k(3), k(4) + 1.);
     Vec<double, 2> shift(k(2), k(5));
-    if(res.empty()) {
-        res = Ptr<Map>(new MapAffine(linTr, shift));
+    if(init.empty()) {
+        return Ptr<Map>(new MapAffine(linTr, shift));
     } else {
-        MapAffine newTr(linTr, shift);
-        res->compose(newTr);
+        Ptr<MapAffine> newTr(new MapAffine(linTr, shift));
+        MapAffine* initPtr = dynamic_cast<MapAffine*>(init.get());
+        Ptr<MapAffine> oldTr(new MapAffine(initPtr->getLinTr(), initPtr->getShift()));
+        oldTr->compose(newTr);
+        return oldTr;
    }
 }
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
-cv::Ptr<Map> MapperGradAffine::getMap(void) const
+cv::Ptr<Map> MapperGradAffine::getMap() const
 {
     return cv::Ptr<Map>(new MapAffine());
 }
diff --git a/modules/reg/src/mappergradeuclid.cpp b/modules/reg/src/mappergradeuclid.cpp
index 26557cbc4..2f126afb6 100644
--- a/modules/reg/src/mappergradeuclid.cpp
+++ b/modules/reg/src/mappergradeuclid.cpp
@@ -44,21 +44,22 @@ namespace reg {
 
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
-MapperGradEuclid::MapperGradEuclid(void)
+MapperGradEuclid::MapperGradEuclid()
 {
 }
 
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
-MapperGradEuclid::~MapperGradEuclid(void)
+MapperGradEuclid::~MapperGradEuclid()
 {
 }
 
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
-void MapperGradEuclid::calculate(
-    const cv::Mat& img1, const cv::Mat& image2, cv::Ptr<Map>& res) const
+cv::Ptr<Map> MapperGradEuclid::calculate(
+    InputArray _img1, InputArray image2, cv::Ptr<Map> init) const
 {
+    Mat img1 = _img1.getMat();
     Mat gradx, grady, imgDiff;
     Mat img2;
 
@@ -66,11 +67,11 @@ void MapperGradEuclid::calculate(
     CV_DbgAssert(img1.channels() == image2.channels());
     CV_DbgAssert(img1.channels() == 1 || img1.channels() == 3);
 
-    if(!res.empty()) {
+    if(!init.empty()) {
         // We have initial values for the registration: we move img2 to that initial reference
-        res->inverseWarp(image2, img2);
+        init->inverseWarp(image2, img2);
     } else {
-        img2 = image2;
+        img2 = image2.getMat();
     }
 
     // Matrices with reference frame coordinates
@@ -111,16 +112,19 @@ void MapperGradEuclid::calculate(
     Matx<double, 2, 2> linTr(cosT, -sinT, sinT, cosT);
     Vec<double, 2> shift(k(0), k(1));
 
-    if(res.empty()) {
-        res = Ptr<Map>(new MapAffine(linTr, shift));
+    if(init.empty()) {
+        return Ptr<Map>(new MapAffine(linTr, shift));
     } else {
-        MapAffine newTr(linTr, shift);
-        res->compose(newTr);
+        Ptr<MapAffine> newTr(new MapAffine(linTr, shift));
+        MapAffine* initPtr = dynamic_cast<MapAffine*>(init.get());
+        Ptr<MapAffine> oldTr(new MapAffine(initPtr->getLinTr(), initPtr->getShift()));
+        oldTr->compose(newTr);
+        return oldTr;
    }
 }
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
-cv::Ptr<Map> MapperGradEuclid::getMap(void) const
+cv::Ptr<Map> MapperGradEuclid::getMap() const
 {
     return cv::Ptr<Map>(new MapAffine());
 }
diff --git a/modules/reg/src/mappergradproj.cpp b/modules/reg/src/mappergradproj.cpp
index f0c9b5e57..f1a0f4b14 100644
--- a/modules/reg/src/mappergradproj.cpp
+++ b/modules/reg/src/mappergradproj.cpp
@@ -44,21 +44,22 @@ namespace reg {
 
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
-MapperGradProj::MapperGradProj(void)
+MapperGradProj::MapperGradProj()
 {
 }
 
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
-MapperGradProj::~MapperGradProj(void)
+MapperGradProj::~MapperGradProj()
 {
 }
 
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
-void MapperGradProj::calculate(
-    const cv::Mat& img1, const cv::Mat& image2, cv::Ptr<Map>& res) const
+cv::Ptr<Map> MapperGradProj::calculate(
+    InputArray _img1, InputArray image2, cv::Ptr<Map> init) const
 {
+    Mat img1 = _img1.getMat();
     Mat gradx, grady, imgDiff;
     Mat img2;
 
@@ -66,11 +67,11 @@ void MapperGradProj::calculate(
     CV_DbgAssert(img1.channels() == image2.channels());
     CV_DbgAssert(img1.channels() == 1 || img1.channels() == 3);
 
-    if(!res.empty()) {
+    if(!init.empty()) {
         // We have initial values for the registration: we move img2 to that initial reference
-        res->inverseWarp(image2, img2);
+        init->inverseWarp(image2, img2);
     } else {
-        img2 = image2;
+        img2 = image2.getMat();
     }
 
     // Get gradient in all channels
@@ -195,16 +196,19 @@ void MapperGradProj::calculate(
     Vec<double, 8> k = A.inv(DECOMP_CHOLESKY)*b;
 
     Matx<double, 3, 3> H(k(0) + 1., k(1), k(2), k(3), k(4) + 1., k(5), k(6), k(7), 1.);
-    if(res.empty()) {
-        res = Ptr<Map>(new MapProjec(H));
+    if(init.empty()) {
+        return Ptr<Map>(new MapProjec(H));
     } else {
-        MapProjec newTr(H);
-        res->compose(newTr);
+        Ptr<MapProjec> newTr(new MapProjec(H));
+        MapProjec* initPtr = dynamic_cast<MapProjec*>(init.get());
+        Ptr<MapProjec> oldTr(new MapProjec(initPtr->getProjTr()));
+        oldTr->compose(newTr);
+        return oldTr;
    }
 }
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
-cv::Ptr<Map> MapperGradProj::getMap(void) const
+cv::Ptr<Map> MapperGradProj::getMap() const
 {
     return cv::Ptr<Map>(new MapProjec());
 }
diff --git a/modules/reg/src/mappergradshift.cpp b/modules/reg/src/mappergradshift.cpp
index 517a373cf..d77fb3c9d 100644
--- a/modules/reg/src/mappergradshift.cpp
+++ b/modules/reg/src/mappergradshift.cpp
@@ -44,31 +44,32 @@ namespace reg {
 
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
-MapperGradShift::MapperGradShift(void)
+MapperGradShift::MapperGradShift()
 {
 }
 
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
-MapperGradShift::~MapperGradShift(void)
+MapperGradShift::~MapperGradShift()
 {
 }
 
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
-void MapperGradShift::calculate(
-    const cv::Mat& img1, const cv::Mat& image2, cv::Ptr<Map>& res) const
+cv::Ptr<Map> MapperGradShift::calculate(
+    InputArray _img1, InputArray image2, cv::Ptr<Map> init) const
 {
+    Mat img1 = _img1.getMat();
     Mat gradx, grady, imgDiff;
     Mat img2;
 
     CV_DbgAssert(img1.size() == image2.size());
 
-    if(!res.empty()) {
+    if(!init.empty()) {
         // We have initial values for the registration: we move img2 to that initial reference
-        res->inverseWarp(image2, img2);
+        init->inverseWarp(image2, img2);
     } else {
-        img2 = image2;
+        img2 = image2.getMat();
     }
 
     // Get gradient in all channels
@@ -92,16 +93,19 @@ void MapperGradShift::calculate(
     // Calculate shift. We use Cholesky decomposition, as A is symmetric.
     Vec<double, 2> shift = A.inv(DECOMP_CHOLESKY)*b;
 
-    if(res.empty()) {
-        res = Ptr<Map>(new MapShift(shift));
+    if(init.empty()) {
+        return Ptr<Map>(new MapShift(shift));
     } else {
-        MapShift newTr(shift);
-        res->compose(newTr);
+        Ptr<MapShift> newTr(new MapShift(shift));
+        MapShift* initPtr = dynamic_cast<MapShift*>(init.get());
+        Ptr<MapShift> oldTr(new MapShift(initPtr->getShift()));
+        oldTr->compose(newTr);
+        return oldTr;
    }
 }
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
-cv::Ptr<Map> MapperGradShift::getMap(void) const
+cv::Ptr<Map> MapperGradShift::getMap() const
 {
     return cv::Ptr<Map>(new MapShift());
 }
diff --git a/modules/reg/src/mappergradsimilar.cpp b/modules/reg/src/mappergradsimilar.cpp
index 0b7a615a3..1a401908c 100644
--- a/modules/reg/src/mappergradsimilar.cpp
+++ b/modules/reg/src/mappergradsimilar.cpp
@@ -44,21 +44,22 @@ namespace reg {
 
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
-MapperGradSimilar::MapperGradSimilar(void)
+MapperGradSimilar::MapperGradSimilar()
 {
 }
 
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
-MapperGradSimilar::~MapperGradSimilar(void)
+MapperGradSimilar::~MapperGradSimilar()
 {
 }
 
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
-void MapperGradSimilar::calculate(
-    const cv::Mat& img1, const cv::Mat& image2, cv::Ptr<Map>& res) const
+cv::Ptr<Map> MapperGradSimilar::calculate(
+    InputArray _img1, InputArray image2, cv::Ptr<Map> init) const
 {
+    Mat img1 = _img1.getMat();
     Mat gradx, grady, imgDiff;
     Mat img2;
 
@@ -66,11 +67,11 @@ void MapperGradSimilar::calculate(
     CV_DbgAssert(img1.channels() == image2.channels());
     CV_DbgAssert(img1.channels() == 1 || img1.channels() == 3);
 
-    if(!res.empty()) {
+    if(!init.empty()) {
         // We have initial values for the registration: we move img2 to that initial reference
-        res->inverseWarp(image2, img2);
+        init->inverseWarp(image2, img2);
     } else {
-        img2 = image2;
+        img2 = image2.getMat();
     }
 
     // Get gradient in all channels
@@ -126,16 +127,19 @@ void MapperGradSimilar::calculate(
 
     Matx<double, 2, 2> linTr(k(0) + 1., k(1), -k(1), k(0) + 1.);
     Vec<double, 2> shift(k(2), k(3));
-    if(res.empty()) {
-        res = Ptr<Map>(new MapAffine(linTr, shift));
+    if(init.empty()) {
+        return Ptr<Map>(new MapAffine(linTr, shift));
     } else {
-        MapAffine newTr(linTr, shift);
-        res->compose(newTr);
+        Ptr<MapAffine> newTr(new MapAffine(linTr, shift));
+        MapAffine* initPtr = dynamic_cast<MapAffine*>(init.get());
+        Ptr<MapAffine> oldTr(new MapAffine(initPtr->getLinTr(), initPtr->getShift()));
+        oldTr->compose(newTr);
+        return oldTr;
    }
 }
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
-cv::Ptr<Map> MapperGradSimilar::getMap(void) const
+cv::Ptr<Map> MapperGradSimilar::getMap() const
 {
     return cv::Ptr<Map>(new MapAffine());
 }
diff --git a/modules/reg/src/mapperpyramid.cpp b/modules/reg/src/mapperpyramid.cpp
index 88c401880..4ec40be5d 100644
--- a/modules/reg/src/mapperpyramid.cpp
+++ b/modules/reg/src/mapperpyramid.cpp
@@ -48,22 +48,23 @@ namespace reg {
 
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
-MapperPyramid::MapperPyramid(const Mapper& baseMapper)
-    : numLev_(3), numIterPerScale_(3), baseMapper_(baseMapper)
+MapperPyramid::MapperPyramid(Ptr<Mapper> baseMapper)
+    : numLev_(3), numIterPerScale_(3), baseMapper_(*baseMapper)
 {
 }
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
-void MapperPyramid::calculate(const Mat& img1, const Mat& image2, Ptr<Map>& res) const
+Ptr<Map> MapperPyramid::calculate(InputArray _img1, InputArray image2, Ptr<Map> init) const
 {
+    Mat img1 = _img1.getMat();
     Mat img2;
 
-    if(!res.empty()) {
+    if(!init.empty()) {
         // We have initial values for the registration: we move img2 to that initial reference
-        res->inverseWarp(image2, img2);
+        init->inverseWarp(image2, img2);
     } else {
-        res = baseMapper_.getMap();
-        img2 = image2;
+        init = baseMapper_.getMap();
+        img2 = image2.getMat();
     }
 
     cv::Ptr<Map> ident = baseMapper_.getMap();
@@ -72,29 +73,30 @@ void MapperPyramid::calculate(const Mat& img1, const Mat& image2, Ptr<Map>& res)
     vector<Mat> pyrIm1(numLev_), pyrIm2(numLev_);
     pyrIm1[0] = img1;
     pyrIm2[0] = img2;
-    for(size_t im_i = 1; im_i < numLev_; ++im_i) {
+    for(int im_i = 1; im_i < numLev_; ++im_i) {
         pyrDown(pyrIm1[im_i - 1], pyrIm1[im_i]);
         pyrDown(pyrIm2[im_i - 1], pyrIm2[im_i]);
     }
 
     Mat currRef, currImg;
-    for(size_t lv_i = 0; lv_i < numLev_; ++lv_i) {
+    for(int lv_i = 0; lv_i < numLev_; ++lv_i) {
         currRef = pyrIm1[numLev_ - 1 - lv_i];
         currImg = pyrIm2[numLev_ - 1 - lv_i];
         // Scale the transformation as we are incresing the resolution in each iteration
         if(lv_i != 0) {
             ident->scale(2.);
         }
-        for(size_t it_i = 0; it_i < numIterPerScale_; ++it_i) {
-            baseMapper_.calculate(currRef, currImg, ident);
+        for(int it_i = 0; it_i < numIterPerScale_; ++it_i) {
+            ident = baseMapper_.calculate(currRef, currImg, ident);
         }
     }
 
-    res->compose(*ident.get());
+    init->compose(ident);
+    return init;
 }
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
-cv::Ptr<Map> MapperPyramid::getMap(void) const
+cv::Ptr<Map> MapperPyramid::getMap() const
 {
     return cv::Ptr<Map>();
 }
diff --git a/modules/reg/src/mapprojec.cpp b/modules/reg/src/mapprojec.cpp
index 7d5becfe6..9b653b443 100644
--- a/modules/reg/src/mapprojec.cpp
+++ b/modules/reg/src/mapprojec.cpp
@@ -45,7 +45,7 @@ namespace reg {
 
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
-MapProjec::MapProjec(void)
+MapProjec::MapProjec()
     : projTr_(Matx<double, 3, 3>::eye())
 {
 }
@@ -57,13 +57,14 @@ MapProjec::MapProjec(const Matx<double, 3, 3>& projTr)
 }
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
-MapProjec::~MapProjec(void)
+MapProjec::~MapProjec()
 {
 }
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
-void MapProjec::inverseWarp(const Mat& img1, Mat& img2) const
+void MapProjec::inverseWarp(InputArray _img1, OutputArray img2) const
 {
+    Mat img1 = _img1.getMat();
     // Rows and columns in destination
     Mat dest_r, dest_c;
     dest_r.create(img1.size(), CV_32FC1);
@@ -95,10 +96,10 @@ Ptr<Map> MapProjec::inverseMap(void) const
 }
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
-void MapProjec::compose(const Map& map)
+void MapProjec::compose(Ptr<Map> map)
 {
     // Composition of homographies H and H' is (H o H') = H'*H
-    const MapProjec& mapProj = static_cast<const MapProjec&>(map);
+    const MapProjec& mapProj = static_cast<const MapProjec&>(*map);
     Matx<double, 3, 3> compProjTr = mapProj.getProjTr()*projTr_;
     projTr_ = compProjTr;
 }
diff --git a/modules/reg/src/mapshift.cpp b/modules/reg/src/mapshift.cpp
index 81262e881..9952eb97f 100644
--- a/modules/reg/src/mapshift.cpp
+++ b/modules/reg/src/mapshift.cpp
@@ -46,23 +46,26 @@ namespace reg {
 
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
-MapShift::MapShift(void) : shift_()
+MapShift::MapShift() : shift_()
 {
 }
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
-MapShift::MapShift(const Vec<double, 2>& shift) : shift_(shift)
+MapShift::MapShift(InputArray shift)
 {
+    Mat shiftMat = shift.getMat();
+    shiftMat.copyTo(shift_);
 }
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
-MapShift::~MapShift(void)
+MapShift::~MapShift()
 {
 }
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
-void MapShift::inverseWarp(const Mat& img1, Mat& img2) const
+void MapShift::inverseWarp(InputArray _img1, OutputArray img2) const
 {
+    Mat img1 = _img1.getMat();
     // Rows and columns in destination
     Mat dest_r, dest_c;
     dest_r.create(img1.size(), CV_32FC1);
@@ -91,10 +94,10 @@ Ptr<Map> MapShift::inverseMap(void) const
 }
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
-void MapShift::compose(const Map& map)
+void MapShift::compose(cv::Ptr<Map> map)
 {
     // Composition of transformations T and T' is (T o T') = b + b'
-    const MapShift& mapShift = static_cast<const MapShift&>(map);
+    const MapShift& mapShift = static_cast<const MapShift&>(*map);
     shift_ += mapShift.getShift();
 }
 
diff --git a/modules/reg/test/test_reg.cpp b/modules/reg/test/test_reg.cpp
index 44b19d8ca..cae7e7f23 100644
--- a/modules/reg/test/test_reg.cpp
+++ b/modules/reg/test/test_reg.cpp
@@ -59,11 +59,13 @@ using namespace std;
 using namespace cv;
 using namespace cv::reg;
 
+#define REG_DEBUG_OUTPUT 0
+
 
 class RegTest : public testing::Test
 {
 public:
-    void loadImage();
+    void loadImage(int dstDataType = CV_32FC3);
 
     void testShift();
     void testEuclidean();
@@ -84,20 +86,20 @@ void RegTest::testShift()
     mapTest.warp(img1, img2);
 
     // Register
-    MapperGradShift mapper;
+    Ptr<Mapper> mapper = makePtr<MapperGradShift>();
     MapperPyramid mappPyr(mapper);
-    Ptr<Map> mapPtr;
-    mappPyr.calculate(img1, img2, mapPtr);
+    Ptr<Map> mapPtr = mappPyr.calculate(img1, img2);
 
     // Print result
-    MapShift* mapShift = dynamic_cast<MapShift*>(mapPtr.get());
+    Ptr<MapShift> mapShift = MapTypeCaster::toShift(mapPtr);
+#if REG_DEBUG_OUTPUT
     cout << endl << "--- Testing shift mapper ---" << endl;
     cout << Mat(shift) << endl;
     cout << Mat(mapShift->getShift()) << endl;
-
+#endif
     // Check accuracy
     Ptr<Map> mapInv(mapShift->inverseMap());
-    mapTest.compose(*mapInv.get());
+    mapTest.compose(mapInv);
     double shNorm = norm(mapTest.getShift());
     EXPECT_LE(shNorm, 0.1);
 }
@@ -116,22 +118,22 @@ void RegTest::testEuclidean()
     mapTest.warp(img1, img2);
 
     // Register
-    MapperGradEuclid mapper;
+    Ptr<Mapper> mapper = makePtr<MapperGradEuclid>();
     MapperPyramid mappPyr(mapper);
-    Ptr<Map> mapPtr;
-    mappPyr.calculate(img1, img2, mapPtr);
+    Ptr<Map> mapPtr = mappPyr.calculate(img1, img2);
 
     // Print result
-    MapAffine* mapAff = dynamic_cast<MapAffine*>(mapPtr.get());
+    Ptr<MapAffine> mapAff = MapTypeCaster::toAffine(mapPtr);
+#if REG_DEBUG_OUTPUT
     cout << endl << "--- Testing Euclidean mapper ---" << endl;
     cout << Mat(linTr) << endl;
     cout << Mat(shift) << endl;
     cout << Mat(mapAff->getLinTr()) << endl;
     cout << Mat(mapAff->getShift()) << endl;
-
+#endif
     // Check accuracy
     Ptr<Map> mapInv(mapAff->inverseMap());
-    mapTest.compose(*mapInv.get());
+    mapTest.compose(mapInv);
     double shNorm = norm(mapTest.getShift());
     EXPECT_LE(shNorm, 0.1);
     double linTrNorm = norm(mapTest.getLinTr());
@@ -154,22 +156,23 @@ void RegTest::testSimilarity()
     mapTest.warp(img1, img2);
 
     // Register
-    MapperGradSimilar mapper;
+    Ptr<Mapper> mapper = makePtr<MapperGradSimilar>();
     MapperPyramid mappPyr(mapper);
-    Ptr<Map> mapPtr;
-    mappPyr.calculate(img1, img2, mapPtr);
+    Ptr<Map> mapPtr = mappPyr.calculate(img1, img2);
 
     // Print result
-    MapAffine* mapAff = dynamic_cast<MapAffine*>(mapPtr.get());
+    Ptr<MapAffine> mapAff = MapTypeCaster::toAffine(mapPtr);
+#if REG_DEBUG_OUTPUT
     cout << endl << "--- Testing similarity mapper ---" << endl;
     cout << Mat(linTr) << endl;
     cout << Mat(shift) << endl;
     cout << Mat(mapAff->getLinTr()) << endl;
     cout << Mat(mapAff->getShift()) << endl;
+#endif
 
     // Check accuracy
     Ptr<Map> mapInv(mapAff->inverseMap());
-    mapTest.compose(*mapInv.get());
+    mapTest.compose(mapInv);
     double shNorm = norm(mapTest.getShift());
     EXPECT_LE(shNorm, 0.1);
     double linTrNorm = norm(mapTest.getLinTr());
@@ -188,22 +191,23 @@ void RegTest::testAffine()
     mapTest.warp(img1, img2);
 
     // Register
-    MapperGradAffine mapper;
+    Ptr<Mapper> mapper = makePtr<MapperGradAffine>();
     MapperPyramid mappPyr(mapper);
-    Ptr<Map> mapPtr;
-    mappPyr.calculate(img1, img2, mapPtr);
+    Ptr<Map> mapPtr = mappPyr.calculate(img1, img2);
 
     // Print result
-    MapAffine* mapAff = dynamic_cast<MapAffine*>(mapPtr.get());
+    Ptr<MapAffine> mapAff = MapTypeCaster::toAffine(mapPtr);
+#if REG_DEBUG_OUTPUT
     cout << endl << "--- Testing affine mapper ---" << endl;
     cout << Mat(linTr) << endl;
     cout << Mat(shift) << endl;
     cout << Mat(mapAff->getLinTr()) << endl;
     cout << Mat(mapAff->getShift()) << endl;
+#endif
 
     // Check accuracy
     Ptr<Map> mapInv(mapAff->inverseMap());
-    mapTest.compose(*mapInv.get());
+    mapTest.compose(mapInv);
     double shNorm = norm(mapTest.getShift());
     EXPECT_LE(shNorm, 0.1);
     double linTrNorm = norm(mapTest.getLinTr());
@@ -222,34 +226,34 @@ void RegTest::testProjective()
     mapTest.warp(img1, img2);
 
     // Register
-    MapperGradProj mapper;
+    Ptr<Mapper> mapper = makePtr<MapperGradProj>();
     MapperPyramid mappPyr(mapper);
-    Ptr<Map> mapPtr;
-    mappPyr.calculate(img1, img2, mapPtr);
+    Ptr<Map> mapPtr = mappPyr.calculate(img1, img2);
 
     // Print result
-    MapProjec* mapProj = dynamic_cast<MapProjec*>(mapPtr.get());
+    Ptr<MapProjec> mapProj = MapTypeCaster::toProjec(mapPtr);
     mapProj->normalize();
+#if REG_DEBUG_OUTPUT
     cout << endl << "--- Testing projective transformation mapper ---" << endl;
     cout << Mat(projTr) << endl;
     cout << Mat(mapProj->getProjTr()) << endl;
+#endif
 
     // Check accuracy
     Ptr<Map> mapInv(mapProj->inverseMap());
-    mapTest.compose(*mapInv.get());
+    mapTest.compose(mapInv);
     double projNorm = norm(mapTest.getProjTr());
     EXPECT_LE(projNorm, sqrt(3.) + 0.01);
     EXPECT_GE(projNorm, sqrt(3.) - 0.01);
 }
 
-void RegTest::loadImage()
+void RegTest::loadImage(int dstDataType)
 {
     const string imageName = cvtest::TS::ptr()->get_data_path() + "reg/home.png";
 
     img1 = imread(imageName, -1);
-    ASSERT_TRUE(img1.data != 0);
-    // Convert to double, 3 channels
-    img1.convertTo(img1, CV_64FC3);
+    ASSERT_TRUE(!img1.empty());
+    img1.convertTo(img1, dstDataType);
 }
 
 
@@ -282,3 +286,15 @@ TEST_F(RegTest, projective)
     loadImage();
     testProjective();
 }
+
+TEST_F(RegTest, projective_dt64fc3)
+{
+    loadImage(CV_64FC3);
+    testProjective();
+}
+
+TEST_F(RegTest, projective_dt64fc1)
+{
+    loadImage(CV_64FC1);
+    testProjective();
+}