text: //warning number '5033' not a valid compiler warning in vc12
  #if defined(_MSC_VER) && (_MSC_VER > 1800)
  // eliminating duplicated round() declaration
  #define HAVE_ROUND 1
  #pragma warning(push)
  #pragma warning(disable:5033)  // 'register' is no longer a supported storage class
  #endif
  
  // #define CVPY_DYNAMIC_INIT
  // #define Py_DEBUG
  
  #if defined(CVPY_DYNAMIC_INIT) && !defined(Py_DEBUG)
  #   define Py_LIMITED_API 0x03030000
  #endif
  
  #include <math.h>
  #include <Python.h>
  
  #if PY_MAJOR_VERSION < 3
  #undef CVPY_DYNAMIC_INIT
  #endif
  
  #if defined(_MSC_VER) && (_MSC_VER > 1800)
  #pragma warning(pop)
  #endif
  
  #define MODULESTR "cv2"
  #define NPY_NO_DEPRECATED_API NPY_1_7_API_VERSION
  #include <numpy/ndarrayobject.h>
  
  #include "opencv2/core/utils/configuration.private.hpp"
  #include "opencv2/core/utils/logger.hpp"
  
  #include "pyopencv_generated_include.h"
  #include "opencv2/core/types_c.h"
  #include "opencv2/opencv_modules.hpp"
  #include "pycompat.hpp"
  #include <map>
  
  class ArgInfo
  {
  public:
      const char * name;
      bool outputarg;
      // more fields may be added if necessary
  
      ArgInfo(const char * name_, bool outputarg_)
          : name(name_)
          , outputarg(outputarg_) {}
  
  private:
      ArgInfo(const ArgInfo&); // = delete
      ArgInfo& operator=(const ArgInfo&); // = delete
  };
  
  template<typename T, class TEnable = void>  // TEnable is used for SFINAE checks
  struct PyOpenCV_Converter
  {
      //static inline bool to(PyObject* obj, T& p, const ArgInfo& info);
      //static inline PyObject* from(const T& src);
  };
  
  template<typename T> static
  bool pyopencv_to(PyObject* obj, T& p, const ArgInfo& info) { return PyOpenCV_Converter<T>::to(obj, p, info); }
  
  template<typename T> static
  PyObject* pyopencv_from(const T& src) { return PyOpenCV_Converter<T>::from(src); }
  
  static PyObject* opencv_error = NULL;
  
  static bool isPythonBindingsDebugEnabled()
  {
      static bool param_debug = cv::utils::getConfigurationParameterBool("OPENCV_PYTHON_DEBUG", false);
      return param_debug;
  }
  
  static void emit_failmsg(PyObject * exc, const char *msg)
  {
      static bool param_debug = isPythonBindingsDebugEnabled();
      if (param_debug)
      {
          CV_LOG_WARNING(NULL, "Bindings conversion failed: " << msg);
      }
      PyErr_SetString(exc, msg);
  }
  
  static int failmsg(const char *fmt, ...)
  {
      char str[1000];
  
      va_list ap;
      va_start(ap, fmt);
      vsnprintf(str, sizeof(str), fmt, ap);
      va_end(ap);
  
      emit_failmsg(PyExc_TypeError, str);
      return 0;
  }
  
  static PyObject* failmsgp(const char *fmt, ...)
  {
      char str[1000];
  
      va_list ap;
      va_start(ap, fmt);
      vsnprintf(str, sizeof(str), fmt, ap);
      va_end(ap);
  
      emit_failmsg(PyExc_TypeError, str);
      return 0;
  }
  
  class PyAllowThreads
  {
  public:
      PyAllowThreads() : _state(PyEval_SaveThread()) {}
      ~PyAllowThreads()
      {
          PyEval_RestoreThread(_state);
      }
  private:
      PyThreadState* _state;
  };
  
  class PyEnsureGIL
  {
  public:
      PyEnsureGIL() : _state(PyGILState_Ensure()) {}
      ~PyEnsureGIL()
      {
          PyGILState_Release(_state);
      }
  private:
      PyGILState_STATE _state;
  };
  
  static void pyRaiseCVException(const cv::Exception &e)
  {
      PyObject_SetAttrString(opencv_error, "file", PyString_FromString(e.file.c_str()));
      PyObject_SetAttrString(opencv_error, "func", PyString_FromString(e.func.c_str()));
      PyObject_SetAttrString(opencv_error, "line", PyInt_FromLong(e.line));
      PyObject_SetAttrString(opencv_error, "code", PyInt_FromLong(e.code));
      PyObject_SetAttrString(opencv_error, "msg", PyString_FromString(e.msg.c_str()));
      PyObject_SetAttrString(opencv_error, "err", PyString_FromString(e.err.c_str()));
      PyErr_SetString(opencv_error, e.what());
  }
  
  #define ERRWRAP2(expr) \
  try \
  { \
      PyAllowThreads allowThreads; \
      expr; \
  } \
  catch (const cv::Exception &e) \
  { \
      pyRaiseCVException(e); \
      return 0; \
  }
  
  using namespace cv;
  
  typedef std::vector<uchar> vector_uchar;
  typedef std::vector<char> vector_char;
  typedef std::vector<int> vector_int;
  typedef std::vector<float> vector_float;
  typedef std::vector<double> vector_double;
  typedef std::vector<size_t> vector_size_t;
  typedef std::vector<Point> vector_Point;
  typedef std::vector<Point2f> vector_Point2f;
  typedef std::vector<Point3f> vector_Point3f;
  typedef std::vector<Size> vector_Size;
  typedef std::vector<Vec2f> vector_Vec2f;
  typedef std::vector<Vec3f> vector_Vec3f;
  typedef std::vector<Vec4f> vector_Vec4f;
  typedef std::vector<Vec6f> vector_Vec6f;
  typedef std::vector<Vec4i> vector_Vec4i;
  typedef std::vector<Rect> vector_Rect;
  typedef std::vector<Rect2d> vector_Rect2d;
  typedef std::vector<RotatedRect> vector_RotatedRect;
  typedef std::vector<KeyPoint> vector_KeyPoint;
  typedef std::vector<Mat> vector_Mat;
  typedef std::vector<std::vector<Mat> > vector_vector_Mat;
  typedef std::vector<UMat> vector_UMat;
  typedef std::vector<DMatch> vector_DMatch;
  typedef std::vector<String> vector_String;
  typedef std::vector<Scalar> vector_Scalar;
  
  typedef std::vector<std::vector<char> > vector_vector_char;
  typedef std::vector<std::vector<Point> > vector_vector_Point;
  typedef std::vector<std::vector<Point2f> > vector_vector_Point2f;
  typedef std::vector<std::vector<Point3f> > vector_vector_Point3f;
  typedef std::vector<std::vector<DMatch> > vector_vector_DMatch;
  typedef std::vector<std::vector<KeyPoint> > vector_vector_KeyPoint;
  
  class NumpyAllocator : public MatAllocator
  {
  public:
      NumpyAllocator() { stdAllocator = Mat::getStdAllocator(); }
      ~NumpyAllocator() {}
  
      UMatData* allocate(PyObject* o, int dims, const int* sizes, int type, size_t* step) const
      {
          UMatData* u = new UMatData(this);
          u->data = u->origdata = (uchar*)PyArray_DATA((PyArrayObject*) o);
          npy_intp* _strides = PyArray_STRIDES((PyArrayObject*) o);
          for( int i = 0; i < dims - 1; i++ )
              step[i] = (size_t)_strides[i];
          step[dims-1] = CV_ELEM_SIZE(type);
          u->size = sizes[0]*step[0];
          u->userdata = o;
          return u;
      }
  
      UMatData* allocate(int dims0, const int* sizes, int type, void* data, size_t* step, int flags, UMatUsageFlags usageFlags) const CV_OVERRIDE
      {
          if( data != 0 )
          {
              // issue #6969: CV_Error(Error::StsAssert, "The data should normally be NULL!");
              // probably this is safe to do in such extreme case
              return stdAllocator->allocate(dims0, sizes, type, data, step, flags, usageFlags);
          }
          PyEnsureGIL gil;
  
          int depth = CV_MAT_DEPTH(type);
          int cn = CV_MAT_CN(type);
          const int f = (int)(sizeof(size_t)/8);
          int typenum = depth == CV_8U ? NPY_UBYTE : depth == CV_8S ? NPY_BYTE :
          depth == CV_16U ? NPY_USHORT : depth == CV_16S ? NPY_SHORT :
          depth == CV_32S ? NPY_INT : depth == CV_32F ? NPY_FLOAT :
          depth == CV_64F ? NPY_DOUBLE : f*NPY_ULONGLONG + (f^1)*NPY_UINT;
          int i, dims = dims0;
          cv::AutoBuffer<npy_intp> _sizes(dims + 1);
          for( i = 0; i < dims; i++ )
              _sizes[i] = sizes[i];
          if( cn > 1 )
              _sizes[dims++] = cn;
          PyObject* o = PyArray_SimpleNew(dims, _sizes.data(), typenum);
          if(!o)
              CV_Error_(Error::StsError, ("The numpy array of typenum=%d, ndims=%d can not be created", typenum, dims));
          return allocate(o, dims0, sizes, type, step);
      }
  
      bool allocate(UMatData* u, int accessFlags, UMatUsageFlags usageFlags) const CV_OVERRIDE
      {
          return stdAllocator->allocate(u, accessFlags, usageFlags);
      }
  
      void deallocate(UMatData* u) const CV_OVERRIDE
      {
          if(!u)
              return;
          PyEnsureGIL gil;
          CV_Assert(u->urefcount >= 0);
          CV_Assert(u->refcount >= 0);
          if(u->refcount == 0)
          {
              PyObject* o = (PyObject*)u->userdata;
              Py_XDECREF(o);
              delete u;
          }
      }
  
      const MatAllocator* stdAllocator;
  };
  
  NumpyAllocator g_numpyAllocator;
  
  
  enum { ARG_NONE = 0, ARG_MAT = 1, ARG_SCALAR = 2 };
  
  // special case, when the converter needs full ArgInfo structure
  static bool pyopencv_to(PyObject* o, Mat& m, const ArgInfo& info)
  {
      bool allowND = true;
      if(!o || o == Py_None)
      {
          if( !m.data )
              m.allocator = &g_numpyAllocator;
          return true;
      }
  
      if( PyInt_Check(o) )
      {
          double v[] = {static_cast<double>(PyInt_AsLong((PyObject*)o)), 0., 0., 0.};
          m = Mat(4, 1, CV_64F, v).clone();
          return true;
      }
      if( PyFloat_Check(o) )
      {
          double v[] = {PyFloat_AsDouble((PyObject*)o), 0., 0., 0.};
          m = Mat(4, 1, CV_64F, v).clone();
          return true;
      }
      if( PyTuple_Check(o) )
      {
          int i, sz = (int)PyTuple_Size((PyObject*)o);
          m = Mat(sz, 1, CV_64F);
          for( i = 0; i < sz; i++ )
          {
              PyObject* oi = PyTuple_GetItem(o, i);
              if( PyInt_Check(oi) )
                  m.at<double>(i) = (double)PyInt_AsLong(oi);
              else if( PyFloat_Check(oi) )
                  m.at<double>(i) = (double)PyFloat_AsDouble(oi);
              else
              {
                  failmsg("%s is not a numerical tuple", info.name);
                  m.release();
                  return false;
              }
          }
          return true;
      }
  
      if( !PyArray_Check(o) )
      {
          failmsg("%s is not a numpy array, neither a scalar", info.name);
          return false;
      }
  
      PyArrayObject* oarr = (PyArrayObject*) o;
  
      bool needcopy = false, needcast = false;
      int typenum = PyArray_TYPE(oarr), new_typenum = typenum;
      int type = typenum == NPY_UBYTE ? CV_8U :
                 typenum == NPY_BYTE ? CV_8S :
                 typenum == NPY_USHORT ? CV_16U :
                 typenum == NPY_SHORT ? CV_16S :
                 typenum == NPY_INT ? CV_32S :
                 typenum == NPY_INT32 ? CV_32S :
                 typenum == NPY_FLOAT ? CV_32F :
                 typenum == NPY_DOUBLE ? CV_64F : -1;
  
      if( type < 0 )
      {
          if( typenum == NPY_INT64 || typenum == NPY_UINT64 || typenum == NPY_LONG )
          {
              needcopy = needcast = true;
              new_typenum = NPY_INT;
              type = CV_32S;
          }
          else
          {
              failmsg("%s data type = %d is not supported", info.name, typenum);
              return false;
          }
      }
  
  #ifndef CV_MAX_DIM
      const int CV_MAX_DIM = 32;
  #endif
  
      int ndims = PyArray_NDIM(oarr);
      if(ndims >= CV_MAX_DIM)
      {
          failmsg("%s dimensionality (=%d) is too high", info.name, ndims);
          return false;
      }
  
      int size[CV_MAX_DIM+1];
      size_t step[CV_MAX_DIM+1];
      size_t elemsize = CV_ELEM_SIZE1(type);
      const npy_intp* _sizes = PyArray_DIMS(oarr);
      const npy_intp* _strides = PyArray_STRIDES(oarr);
      bool ismultichannel = ndims == 3 && _sizes[2] <= CV_CN_MAX;
  
      for( int i = ndims-1; i >= 0 && !needcopy; i-- )
      {
          // these checks handle cases of
          //  a) multi-dimensional (ndims > 2) arrays, as well as simpler 1- and 2-dimensional cases
          //  b) transposed arrays, where _strides[] elements go in non-descending order
          //  c) flipped arrays, where some of _strides[] elements are negative
          // the _sizes[i] > 1 is needed to avoid spurious copies when NPY_RELAXED_STRIDES is set
          if( (i == ndims-1 && _sizes[i] > 1 && (size_t)_strides[i] != elemsize) ||
              (i < ndims-1 && _sizes[i] > 1 && _strides[i] < _strides[i+1]) )
              needcopy = true;
      }
  
      if( ismultichannel && _strides[1] != (npy_intp)elemsize*_sizes[2] )
          needcopy = true;
  
      if (needcopy)
      {
          if (info.outputarg)
          {
              failmsg("Layout of the output array %s is incompatible with cv::Mat (step[ndims-1] != elemsize or step[1] != elemsize*nchannels)", info.name);
              return false;
          }
  
          if( needcast ) {
              o = PyArray_Cast(oarr, new_typenum);
              oarr = (PyArrayObject*) o;
          }
          else {
              oarr = PyArray_GETCONTIGUOUS(oarr);
              o = (PyObject*) oarr;
          }
  
          _strides = PyArray_STRIDES(oarr);
      }
  
      // Normalize strides in case NPY_RELAXED_STRIDES is set
      size_t default_step = elemsize;
      for ( int i = ndims - 1; i >= 0; --i )
      {
          size[i] = (int)_sizes[i];
          if ( size[i] > 1 )
          {
              step[i] = (size_t)_strides[i];
              default_step = step[i] * size[i];
          }
          else
          {
              step[i] = default_step;
              default_step *= size[i];
          }
      }
  
      // handle degenerate case
      if( ndims == 0) {
          size[ndims] = 1;
          step[ndims] = elemsize;
          ndims++;
      }
  
      if( ismultichannel )
      {
          ndims--;
          type |= CV_MAKETYPE(0, size[2]);
      }
  
      if( ndims > 2 && !allowND )
      {
          failmsg("%s has more than 2 dimensions", info.name);
          return false;
      }
  
      m = Mat(ndims, size, type, PyArray_DATA(oarr), step);
      m.u = g_numpyAllocator.allocate(o, ndims, size, type, step);
      m.addref();
  
      if( !needcopy )
      {
          Py_INCREF(o);
      }
      m.allocator = &g_numpyAllocator;
  
      return true;
  }
  
  template<typename _Tp, int m, int n>
  bool pyopencv_to(PyObject* o, Matx<_Tp, m, n>& mx, const ArgInfo& info)
  {
      Mat tmp;
      if (!pyopencv_to(o, tmp, info)) {
          return false;
      }
  
      tmp.copyTo(mx);
      return true;
  }
  
  template<typename _Tp, int cn>
  bool pyopencv_to(PyObject* o, Vec<_Tp, cn>& vec, const ArgInfo& info)
  {
      return pyopencv_to(o, (Matx<_Tp, cn, 1>&)vec, info);
  }
  
  template<>
  PyObject* pyopencv_from(const Mat& m)
  {
      if( !m.data )
          Py_RETURN_NONE;
      Mat temp, *p = (Mat*)&m;
      if(!p->u || p->allocator != &g_numpyAllocator)
      {
          temp.allocator = &g_numpyAllocator;
          ERRWRAP2(m.copyTo(temp));
          p = &temp;
      }
      PyObject* o = (PyObject*)p->u->userdata;
      Py_INCREF(o);
      return o;
  }
  
  template<typename _Tp, int m, int n>
  PyObject* pyopencv_from(const Matx<_Tp, m, n>& matx)
  {
      return pyopencv_from(Mat(matx));
  }
  
  template<typename T>
  struct PyOpenCV_Converter< cv::Ptr<T> >
  {
      static PyObject* from(const cv::Ptr<T>& p)
      {
          if (!p)
              Py_RETURN_NONE;
          return pyopencv_from(*p);
      }
      static bool to(PyObject *o, Ptr<T>& p, const ArgInfo& info)
      {
          if (!o || o == Py_None)
              return true;
          p = makePtr<T>();
          return pyopencv_to(o, *p, info);
      }
  };
  
  template<>
  bool pyopencv_to(PyObject* obj, void*& ptr, const ArgInfo& info)
  {
      CV_UNUSED(info);
      if (!obj || obj == Py_None)
          return true;
  
      if (!PyLong_Check(obj))
          return false;
      ptr = PyLong_AsVoidPtr(obj);
      return ptr != NULL && !PyErr_Occurred();
  }
  
  static PyObject* pyopencv_from(void*& ptr)
  {
      return PyLong_FromVoidPtr(ptr);
  }
  
  struct SafeSeqItem
  {
      PyObject * item;
      SafeSeqItem(PyObject *obj, size_t idx) { item = PySequence_GetItem(obj, idx); }
      ~SafeSeqItem() { Py_XDECREF(item); }
  };
  
  static bool pyopencv_to(PyObject *o, Scalar& s, const ArgInfo& info)
  {
      if(!o || o == Py_None)
          return true;
      if (PySequence_Check(o)) {
          if (4 < PySequence_Size(o))
          {
              failmsg("Scalar value for argument '%s' is longer than 4", info.name);
              return false;
          }
          for (Py_ssize_t i = 0; i < PySequence_Size(o); i++) {
              SafeSeqItem item_wrap(o, i);
              PyObject *item = item_wrap.item;
              if (PyFloat_Check(item) || PyInt_Check(item)) {
                  s[(int)i] = PyFloat_AsDouble(item);
              } else {
                  failmsg("Scalar value for argument '%s' is not numeric", info.name);
                  return false;
              }
          }
      } else {
          if (PyFloat_Check(o) || PyInt_Check(o)) {
              s[0] = PyFloat_AsDouble(o);
          } else {
              failmsg("Scalar value for argument '%s' is not numeric", info.name);
              return false;
          }
      }
      return true;
  }
  
  template<>
  PyObject* pyopencv_from(const Scalar& src)
  {
      return Py_BuildValue("(dddd)", src[0], src[1], src[2], src[3]);
  }
  
  template<>
  PyObject* pyopencv_from(const bool& value)
  {
      return PyBool_FromLong(value);
  }
  
  template<>
  bool pyopencv_to(PyObject* obj, bool& value, const ArgInfo& info)
  {
      CV_UNUSED(info);
      if(!obj || obj == Py_None)
          return true;
      int _val = PyObject_IsTrue(obj);
      if(_val < 0)
          return false;
      value = _val > 0;
      return true;
  }
  
  template<>
  PyObject* pyopencv_from(const size_t& value)
  {
      return PyLong_FromSize_t(value);
  }
  
  template<>
  bool pyopencv_to(PyObject* obj, size_t& value, const ArgInfo& info)
  {
      CV_UNUSED(info);
      if(!obj || obj == Py_None)
          return true;
      value = (int)PyLong_AsUnsignedLong(obj);
      return value != (size_t)-1 || !PyErr_Occurred();
  }
  
  template<>
  PyObject* pyopencv_from(const int& value)
  {
      return PyInt_FromLong(value);
  }
  
  template<>
  bool pyopencv_to(PyObject* obj, int& value, const ArgInfo& info)
  {
      CV_UNUSED(info);
      if(!obj || obj == Py_None)
          return true;
      if(PyInt_Check(obj))
          value = (int)PyInt_AsLong(obj);
      else if(PyLong_Check(obj))
          value = (int)PyLong_AsLong(obj);
      else
          return false;
      return value != -1 || !PyErr_Occurred();
  }
  
  template<>
  PyObject* pyopencv_from(const uchar& value)
  {
      return PyInt_FromLong(value);
  }
  
  template<>
  bool pyopencv_to(PyObject* obj, uchar& value, const ArgInfo& info)
  {
      CV_UNUSED(info);
      if(!obj || obj == Py_None)
          return true;
      int ivalue = (int)PyInt_AsLong(obj);
      value = cv::saturate_cast<uchar>(ivalue);
      return ivalue != -1 || !PyErr_Occurred();
  }
  
  template<>
  PyObject* pyopencv_from(const double& value)
  {
      return PyFloat_FromDouble(value);
  }
  
  template<>
  bool pyopencv_to(PyObject* obj, double& value, const ArgInfo& info)
  {
      CV_UNUSED(info);
      if(!obj || obj == Py_None)
          return true;
      if(!!PyInt_CheckExact(obj))
          value = (double)PyInt_AS_LONG(obj);
      else
          value = PyFloat_AsDouble(obj);
      return !PyErr_Occurred();
  }
  
  template<>
  PyObject* pyopencv_from(const float& value)
  {
      return PyFloat_FromDouble(value);
  }
  
  template<>
  bool pyopencv_to(PyObject* obj, float& value, const ArgInfo& info)
  {
      CV_UNUSED(info);
      if(!obj || obj == Py_None)
          return true;
      if(!!PyInt_CheckExact(obj))
          value = (float)PyInt_AS_LONG(obj);
      else
          value = (float)PyFloat_AsDouble(obj);
      return !PyErr_Occurred();
  }
  
  template<>
  PyObject* pyopencv_from(const int64& value)
  {
      return PyLong_FromLongLong(value);
  }
  
  template<>
  PyObject* pyopencv_from(const String& value)
  {
      return PyString_FromString(value.empty() ? "" : value.c_str());
  }
  
  template<>
  bool pyopencv_to(PyObject* obj, String &value, const ArgInfo& info)
  {
      CV_UNUSED(info);
      if(!obj || obj == Py_None)
          return true;
      std::string str;
      if (getUnicodeString(obj, str))
      {
          value = str;
          return true;
      }
      return false;
  }
  
  template<>
  bool pyopencv_to(PyObject* obj, Size& sz, const ArgInfo& info)
  {
      CV_UNUSED(info);
      if(!obj || obj == Py_None)
          return true;
      return PyArg_ParseTuple(obj, "ii", &sz.width, &sz.height) > 0;
  }
  
  template<>
  PyObject* pyopencv_from(const Size& sz)
  {
      return Py_BuildValue("(ii)", sz.width, sz.height);
  }
  
  template<>
  bool pyopencv_to(PyObject* obj, Size_<float>& sz, const ArgInfo& info)
  {
      CV_UNUSED(info);
      if(!obj || obj == Py_None)
          return true;
      return PyArg_ParseTuple(obj, "ff", &sz.width, &sz.height) > 0;
  }
  
  template<>
  PyObject* pyopencv_from(const Size_<float>& sz)
  {
      return Py_BuildValue("(ff)", sz.width, sz.height);
  }
  
  template<>
  bool pyopencv_to(PyObject* obj, Rect& r, const ArgInfo& info)
  {
      CV_UNUSED(info);
      if(!obj || obj == Py_None)
          return true;
      return PyArg_ParseTuple(obj, "iiii", &r.x, &r.y, &r.width, &r.height) > 0;
  }
  
  template<>
  PyObject* pyopencv_from(const Rect& r)
  {
      return Py_BuildValue("(iiii)", r.x, r.y, r.width, r.height);
  }
  
  template<>
  bool pyopencv_to(PyObject* obj, Rect2d& r, const ArgInfo& info)
  {
      CV_UNUSED(info);
      if(!obj || obj == Py_None)
          return true;
      return PyArg_ParseTuple(obj, "dddd", &r.x, &r.y, &r.width, &r.height) > 0;
  }
  
  template<>
  PyObject* pyopencv_from(const Rect2d& r)
  {
      return Py_BuildValue("(dddd)", r.x, r.y, r.width, r.height);
  }
  
  template<>
  bool pyopencv_to(PyObject* obj, Range& r, const ArgInfo& info)
  {
      CV_UNUSED(info);
      if(!obj || obj == Py_None)
          return true;
      while (PySequence_Check(obj))
      {
          if (2 != PySequence_Size(obj))
          {
              failmsg("Range value for argument '%s' is longer than 2", info.name);
              return false;
          }
          {
              SafeSeqItem item_wrap(obj, 0);
              PyObject *item = item_wrap.item;
              if (PyInt_Check(item)) {
                  r.start = (int)PyInt_AsLong(item);
              } else {
                  failmsg("Range.start value for argument '%s' is not integer", info.name);
                  break;
              }
          }
          {
              SafeSeqItem item_wrap(obj, 1);
              PyObject *item = item_wrap.item;
              if (PyInt_Check(item)) {
                  r.end = (int)PyInt_AsLong(item);
              } else {
                  failmsg("Range.end value for argument '%s' is not integer", info.name);
                  break;
              }
          }
          return true;
      }
      if(PyObject_Size(obj) == 0)
      {
          r = Range::all();
          return true;
      }
      return PyArg_ParseTuple(obj, "ii", &r.start, &r.end) > 0;
  }
  
  template<>
  PyObject* pyopencv_from(const Range& r)
  {
      return Py_BuildValue("(ii)", r.start, r.end);
  }
  
  template<>
  bool pyopencv_to(PyObject* obj, Point& p, const ArgInfo& info)
  {
      CV_UNUSED(info);
      if(!obj || obj == Py_None)
          return true;
      if(PyComplex_Check(obj))
      {
          p.x = saturate_cast<int>(PyComplex_RealAsDouble(obj));
          p.y = saturate_cast<int>(PyComplex_ImagAsDouble(obj));
          return true;
      }
      return PyArg_ParseTuple(obj, "ii", &p.x, &p.y) > 0;
  }
  
  template<>
  bool pyopencv_to(PyObject* obj, Point2f& p, const ArgInfo& info)
  {
      CV_UNUSED(info);
      if(!obj || obj == Py_None)
          return true;
      if (PyComplex_Check(obj))
      {
          p.x = saturate_cast<float>(PyComplex_RealAsDouble(obj));
          p.y = saturate_cast<float>(PyComplex_ImagAsDouble(obj));
          return true;
      }
      return PyArg_ParseTuple(obj, "ff", &p.x, &p.y) > 0;
  }
  
  template<>
  bool pyopencv_to(PyObject* obj, Point2d& p, const ArgInfo& info)
  {
      CV_UNUSED(info);
      if(!obj || obj == Py_None)
          return true;
      if(PyComplex_Check(obj))
      {
          p.x = PyComplex_RealAsDouble(obj);
          p.y = PyComplex_ImagAsDouble(obj);
          return true;
      }
      return PyArg_ParseTuple(obj, "dd", &p.x, &p.y) > 0;
  }
  
  template<>
  bool pyopencv_to(PyObject* obj, Point3f& p, const ArgInfo& info)
  {
      CV_UNUSED(info);
      if(!obj || obj == Py_None)
          return true;
      return PyArg_ParseTuple(obj, "fff", &p.x, &p.y, &p.z) > 0;
  }
  
  template<>
  bool pyopencv_to(PyObject* obj, Point3d& p, const ArgInfo& info)
  {
      CV_UNUSED(info);
      if(!obj || obj == Py_None)
          return true;
      return PyArg_ParseTuple(obj, "ddd", &p.x, &p.y, &p.z) > 0;
  }
  
  template<>
  PyObject* pyopencv_from(const Point& p)
  {
      return Py_BuildValue("(ii)", p.x, p.y);
  }
  
  template<>
  PyObject* pyopencv_from(const Point2f& p)
  {
      return Py_BuildValue("(dd)", p.x, p.y);
  }
  
  template<>
  PyObject* pyopencv_from(const Point3f& p)
  {
      return Py_BuildValue("(ddd)", p.x, p.y, p.z);
  }
  
  static bool pyopencv_to(PyObject* obj, Vec4d& v, ArgInfo& info)
  {
      CV_UNUSED(info);
      if (!obj)
          return true;
      return PyArg_ParseTuple(obj, "dddd", &v[0], &v[1], &v[2], &v[3]) > 0;
  }
  
  static bool pyopencv_to(PyObject* obj, Vec4f& v, ArgInfo& info)
  {
      CV_UNUSED(info);
      if (!obj)
          return true;
      return PyArg_ParseTuple(obj, "ffff", &v[0], &v[1], &v[2], &v[3]) > 0;
  }
  
  static bool pyopencv_to(PyObject* obj, Vec4i& v, ArgInfo& info)
  {
      CV_UNUSED(info);
      if (!obj)
          return true;
      return PyArg_ParseTuple(obj, "iiii", &v[0], &v[1], &v[2], &v[3]) > 0;
  }
  
  static bool pyopencv_to(PyObject* obj, Vec3d& v, ArgInfo& info)
  {
      CV_UNUSED(info);
      if (!obj)
          return true;
      return PyArg_ParseTuple(obj, "ddd", &v[0], &v[1], &v[2]) > 0;
  }
  
  static bool pyopencv_to(PyObject* obj, Vec3f& v, ArgInfo& info)
  {
      CV_UNUSED(info);
      if (!obj)
          return true;
      return PyArg_ParseTuple(obj, "fff", &v[0], &v[1], &v[2]) > 0;
  }
  
  static bool pyopencv_to(PyObject* obj, Vec3i& v, ArgInfo& info)
  {
      CV_UNUSED(info);
      if (!obj)
          return true;
      return PyArg_ParseTuple(obj, "iii", &v[0], &v[1], &v[2]) > 0;
  }
  
  static bool pyopencv_to(PyObject* obj, Vec2d& v, ArgInfo& info)
  {
      CV_UNUSED(info);
      if (!obj)
          return true;
      return PyArg_ParseTuple(obj, "dd", &v[0], &v[1]) > 0;
  }
  
  static bool pyopencv_to(PyObject* obj, Vec2f& v, ArgInfo& info)
  {
      CV_UNUSED(info);
      if (!obj)
          return true;
      return PyArg_ParseTuple(obj, "ff", &v[0], &v[1]) > 0;
  }
  
  static bool pyopencv_to(PyObject* obj, Vec2i& v, ArgInfo& info)
  {
      CV_UNUSED(info);
      if (!obj)
          return true;
      return PyArg_ParseTuple(obj, "ii", &v[0], &v[1]) > 0;
  }
  
  template<>
  PyObject* pyopencv_from(const Vec4d& v)
  {
      return Py_BuildValue("(dddd)", v[0], v[1], v[2], v[3]);
  }
  
  template<>
  PyObject* pyopencv_from(const Vec4f& v)
  {
      return Py_BuildValue("(ffff)", v[0], v[1], v[2], v[3]);
  }
  
  template<>
  PyObject* pyopencv_from(const Vec4i& v)
  {
      return Py_BuildValue("(iiii)", v[0], v[1], v[2], v[3]);
  }
  
  template<>
  PyObject* pyopencv_from(const Vec3d& v)
  {
      return Py_BuildValue("(ddd)", v[0], v[1], v[2]);
  }
  
  template<>
  PyObject* pyopencv_from(const Vec3f& v)
  {
      return Py_BuildValue("(fff)", v[0], v[1], v[2]);
  }
  
  template<>
  PyObject* pyopencv_from(const Vec3i& v)
  {
      return Py_BuildValue("(iii)", v[0], v[1], v[2]);
  }
  
  template<>
  PyObject* pyopencv_from(const Vec2d& v)
  {
      return Py_BuildValue("(dd)", v[0], v[1]);
  }
  
  template<>
  PyObject* pyopencv_from(const Vec2f& v)
  {
      return Py_BuildValue("(ff)", v[0], v[1]);
  }
  
  template<>
  PyObject* pyopencv_from(const Vec2i& v)
  {
      return Py_BuildValue("(ii)", v[0], v[1]);
  }
  
  template<>
  PyObject* pyopencv_from(const Point2d& p)
  {
      return Py_BuildValue("(dd)", p.x, p.y);
  }
  
  template<>
  PyObject* pyopencv_from(const Point3d& p)
  {
      return Py_BuildValue("(ddd)", p.x, p.y, p.z);
  }
  
  template<typename _Tp> struct pyopencvVecConverter
  {
      typedef typename DataType<_Tp>::channel_type _Cp;
      static inline bool copyOneItem(PyObject *obj, size_t start, int channels, _Cp * data)
      {
          for(size_t j = 0; (int)j < channels; j++ )
          {
              SafeSeqItem sub_item_wrap(obj, start + j);
              PyObject* item_ij = sub_item_wrap.item;
              if( PyInt_Check(item_ij))
              {
                  int v = (int)PyInt_AsLong(item_ij);
                  if( v == -1 && PyErr_Occurred() )
                      return false;
                  data[j] = saturate_cast<_Cp>(v);
              }
              else if( PyLong_Check(item_ij))
              {
                  int v = (int)PyLong_AsLong(item_ij);
                  if( v == -1 && PyErr_Occurred() )
                      return false;
                  data[j] = saturate_cast<_Cp>(v);
              }
              else if( PyFloat_Check(item_ij))
              {
                  double v = PyFloat_AsDouble(item_ij);
                  if( PyErr_Occurred() )
                      return false;
                  data[j] = saturate_cast<_Cp>(v);
              }
              else
                  return false;
          }
          return true;
      }
      static bool to(PyObject* obj, std::vector<_Tp>& value, const ArgInfo& info)
      {
          if(!obj || obj == Py_None)
              return true;
          if (PyArray_Check(obj))
          {
              Mat m;
              pyopencv_to(obj, m, info);
              m.copyTo(value);
              return true;
          }
          else if (PySequence_Check(obj))
          {
              const int type = traits::Type<_Tp>::value;
              const int depth = CV_MAT_DEPTH(type), channels = CV_MAT_CN(type);
              size_t i, n = PySequence_Size(obj);
              value.resize(n);
              for (i = 0; i < n; i++ )
              {
                  SafeSeqItem item_wrap(obj, i);
                  PyObject* item = item_wrap.item;
                  _Cp* data = (_Cp*)&value[i];
  
                  if( channels == 2 && PyComplex_Check(item) )
                  {
                      data[0] = saturate_cast<_Cp>(PyComplex_RealAsDouble(item));
                      data[1] = saturate_cast<_Cp>(PyComplex_ImagAsDouble(item));
                  }
                  else if( channels > 1 )
                  {
                      if( PyArray_Check(item))
                      {
                          Mat src;
                          pyopencv_to(item, src, info);
                          if( src.dims != 2 || src.channels() != 1 ||
                             ((src.cols != 1 || src.rows != channels) &&
                              (src.cols != channels || src.rows != 1)))
                              break;
                          Mat dst(src.rows, src.cols, depth, data);
                          src.convertTo(dst, type);
                          if( dst.data != (uchar*)data )
                              break;
                      }
                      else if (PySequence_Check(item))
                      {
                          if (!copyOneItem(item, 0, channels, data))
                              break;
                      }
                      else
                      {
                          break;
                      }
                  }
                  else if (channels == 1)
                  {
                      if (!copyOneItem(obj, i, channels, data))
                          break;
                  }
                  else
                  {
                      break;
                  }
              }
              return i == n;
          }
          return false;
      }
  
      static PyObject* from(const std::vector<_Tp>& value)
      {
          if(value.empty())
              return PyTuple_New(0);
          int type = traits::Type<_Tp>::value;
          int depth = CV_MAT_DEPTH(type), channels = CV_MAT_CN(type);
          Mat src((int)value.size(), channels, depth, (uchar*)&value[0]);
          return pyopencv_from(src);
      }
  };
  
  template<typename _Tp>
  bool pyopencv_to(PyObject* obj, std::vector<_Tp>& value, const ArgInfo& info)
  {
      return pyopencvVecConverter<_Tp>::to(obj, value, info);
  }
  
  template<typename _Tp>
  PyObject* pyopencv_from(const std::vector<_Tp>& value)
  {
      return pyopencvVecConverter<_Tp>::from(value);
  }
  
  template<typename _Tp> static inline bool pyopencv_to_generic_vec(PyObject* obj, std::vector<_Tp>& value, const ArgInfo& info)
  {
      if(!obj || obj == Py_None)
         return true;
      if (!PySequence_Check(obj))
          return false;
      size_t n = PySequence_Size(obj);
      value.resize(n);
      for(size_t i = 0; i < n; i++ )
      {
          SafeSeqItem item_wrap(obj, i);
          if(!pyopencv_to(item_wrap.item, value[i], info))
              return false;
      }
      return true;
  }
  
  template<typename _Tp> static inline PyObject* pyopencv_from_generic_vec(const std::vector<_Tp>& value)
  {
      int i, n = (int)value.size();
      PyObject* seq = PyList_New(n);
      for( i = 0; i < n; i++ )
      {
          PyObject* item = pyopencv_from(value[i]);
          if(!item)
              break;
          PyList_SetItem(seq, i, item);
      }
      if( i < n )
      {
          Py_DECREF(seq);
          return 0;
      }
      return seq;
  }
  
  template<>
  PyObject* pyopencv_from(const std::pair<int, double>& src)
  {
      return Py_BuildValue("(id)", src.first, src.second);
  }
  
  template<typename _Tp, typename _Tr> struct pyopencvVecConverter<std::pair<_Tp, _Tr> >
  {
      static bool to(PyObject* obj, std::vector<std::pair<_Tp, _Tr> >& value, const ArgInfo& info)
      {
          return pyopencv_to_generic_vec(obj, value, info);
      }
  
      static PyObject* from(const std::vector<std::pair<_Tp, _Tr> >& value)
      {
          return pyopencv_from_generic_vec(value);
      }
  };
  
  template<typename _Tp> struct pyopencvVecConverter<std::vector<_Tp> >
  {
      static bool to(PyObject* obj, std::vector<std::vector<_Tp> >& value, const ArgInfo& info)
      {
          return pyopencv_to_generic_vec(obj, value, info);
      }
  
      static PyObject* from(const std::vector<std::vector<_Tp> >& value)
      {
          return pyopencv_from_generic_vec(value);
      }
  };
  
  template<> struct pyopencvVecConverter<Mat>
  {
      static bool to(PyObject* obj, std::vector<Mat>& value, const ArgInfo& info)
      {
          return pyopencv_to_generic_vec(obj, value, info);
      }
  
      static PyObject* from(const std::vector<Mat>& value)
      {
          return pyopencv_from_generic_vec(value);
      }
  };
  
  template<> struct pyopencvVecConverter<UMat>
  {
      static bool to(PyObject* obj, std::vector<UMat>& value, const ArgInfo& info)
      {
          return pyopencv_to_generic_vec(obj, value, info);
      }
  
      static PyObject* from(const std::vector<UMat>& value)
      {
          return pyopencv_from_generic_vec(value);
      }
  };
  
  template<> struct pyopencvVecConverter<KeyPoint>
  {
      static bool to(PyObject* obj, std::vector<KeyPoint>& value, const ArgInfo& info)
      {
          return pyopencv_to_generic_vec(obj, value, info);
      }
  
      static PyObject* from(const std::vector<KeyPoint>& value)
      {
          return pyopencv_from_generic_vec(value);
      }
  };
  
  template<> struct pyopencvVecConverter<DMatch>
  {
      static bool to(PyObject* obj, std::vector<DMatch>& value, const ArgInfo& info)
      {
          return pyopencv_to_generic_vec(obj, value, info);
      }
  
      static PyObject* from(const std::vector<DMatch>& value)
      {
          return pyopencv_from_generic_vec(value);
      }
  };
  
  template<> struct pyopencvVecConverter<String>
  {
      static bool to(PyObject* obj, std::vector<String>& value, const ArgInfo& info)
      {
          return pyopencv_to_generic_vec(obj, value, info);
      }
  
      static PyObject* from(const std::vector<String>& value)
      {
          return pyopencv_from_generic_vec(value);
      }
  };
  
  template<> struct pyopencvVecConverter<RotatedRect>
  {
      static bool to(PyObject* obj, std::vector<RotatedRect>& value, const ArgInfo& info)
      {
          return pyopencv_to_generic_vec(obj, value, info);
      }
      static PyObject* from(const std::vector<RotatedRect>& value)
      {
          return pyopencv_from_generic_vec(value);
      }
  };
  
  template<>
  bool pyopencv_to(PyObject *obj, TermCriteria& dst, const ArgInfo& info)
  {
      CV_UNUSED(info);
      if(!obj)
          return true;
      return PyArg_ParseTuple(obj, "iid", &dst.type, &dst.maxCount, &dst.epsilon) > 0;
  }
  
  template<>
  PyObject* pyopencv_from(const TermCriteria& src)
  {
      return Py_BuildValue("(iid)", src.type, src.maxCount, src.epsilon);
  }
  
  template<>
  bool pyopencv_to(PyObject *obj, RotatedRect& dst, const ArgInfo& info)
  {
      CV_UNUSED(info);
      if(!obj)
          return true;
      return PyArg_ParseTuple(obj, "(ff)(ff)f", &dst.center.x, &dst.center.y, &dst.size.width, &dst.size.height, &dst.angle) > 0;
  }
  
  template<>
  PyObject* pyopencv_from(const RotatedRect& src)
  {
      return Py_BuildValue("((ff)(ff)f)", src.center.x, src.center.y, src.size.width, src.size.height, src.angle);
  }
  
  template<>
  PyObject* pyopencv_from(const Moments& m)
  {
      return Py_BuildValue("{s:d,s:d,s:d,s:d,s:d,s:d,s:d,s:d,s:d,s:d,s:d,s:d,s:d,s:d,s:d,s:d,s:d,s:d,s:d,s:d,s:d,s:d,s:d,s:d}",
                           "m00", m.m00, "m10", m.m10, "m01", m.m01,
                           "m20", m.m20, "m11", m.m11, "m02", m.m02,
                           "m30", m.m30, "m21", m.m21, "m12", m.m12, "m03", m.m03,
                           "mu20", m.mu20, "mu11", m.mu11, "mu02", m.mu02,
                           "mu30", m.mu30, "mu21", m.mu21, "mu12", m.mu12, "mu03", m.mu03,
                           "nu20", m.nu20, "nu11", m.nu11, "nu02", m.nu02,
                           "nu30", m.nu30, "nu21", m.nu21, "nu12", m.nu12, "nu03", m.nu03);
  }
  
  static int OnError(int status, const char *func_name, const char *err_msg, const char *file_name, int line, void *userdata)
  {
      PyGILState_STATE gstate;
      gstate = PyGILState_Ensure();
  
      PyObject *on_error = (PyObject*)userdata;
      PyObject *args = Py_BuildValue("isssi", status, func_name, err_msg, file_name, line);
  
      PyObject *r = PyObject_Call(on_error, args, NULL);
      if (r == NULL) {
          PyErr_Print();
      } else {
          Py_DECREF(r);
      }
  
      Py_DECREF(args);
      PyGILState_Release(gstate);
  
      return 0; // The return value isn't used
  }
  
  static PyObject *pycvRedirectError(PyObject*, PyObject *args, PyObject *kw)
  {
      const char *keywords[] = { "on_error", NULL };
      PyObject *on_error;
  
      if (!PyArg_ParseTupleAndKeywords(args, kw, "O", (char**)keywords, &on_error))
          return NULL;
  
      if ((on_error != Py_None) && !PyCallable_Check(on_error))  {
          PyErr_SetString(PyExc_TypeError, "on_error must be callable");
          return NULL;
      }
  
      // Keep track of the previous handler parameter, so we can decref it when no longer used
      static PyObject* last_on_error = NULL;
      if (last_on_error) {
          Py_DECREF(last_on_error);
          last_on_error = NULL;
      }
  
      if (on_error == Py_None) {
          ERRWRAP2(redirectError(NULL));
      } else {
          last_on_error = on_error;
          Py_INCREF(last_on_error);
          ERRWRAP2(redirectError(OnError, last_on_error));
      }
      Py_RETURN_NONE;
  }
  
  static void OnMouse(int event, int x, int y, int flags, void* param)
  {
      PyGILState_STATE gstate;
      gstate = PyGILState_Ensure();
  
      PyObject *o = (PyObject*)param;
      PyObject *args = Py_BuildValue("iiiiO", event, x, y, flags, PyTuple_GetItem(o, 1));
  
      PyObject *r = PyObject_Call(PyTuple_GetItem(o, 0), args, NULL);
      if (r == NULL)
          PyErr_Print();
      else
          Py_DECREF(r);
      Py_DECREF(args);
      PyGILState_Release(gstate);
  }
  
  #ifdef HAVE_OPENCV_HIGHGUI
  static PyObject *pycvSetMouseCallback(PyObject*, PyObject *args, PyObject *kw)
  {
      const char *keywords[] = { "window_name", "on_mouse", "param", NULL };
      char* name;
      PyObject *on_mouse;
      PyObject *param = NULL;
  
      if (!PyArg_ParseTupleAndKeywords(args, kw, "sO|O", (char**)keywords, &name, &on_mouse, &param))
          return NULL;
      if (!PyCallable_Check(on_mouse)) {
          PyErr_SetString(PyExc_TypeError, "on_mouse must be callable");
          return NULL;
      }
      if (param == NULL) {
          param = Py_None;
      }
      PyObject* py_callback_info = Py_BuildValue("OO", on_mouse, param);
      static std::map<std::string, PyObject*> registered_callbacks;
      std::map<std::string, PyObject*>::iterator i = registered_callbacks.find(name);
      if (i != registered_callbacks.end())
      {
          Py_DECREF(i->second);
          i->second = py_callback_info;
      }
      else
      {
          registered_callbacks.insert(std::pair<std::string, PyObject*>(std::string(name), py_callback_info));
      }
      ERRWRAP2(setMouseCallback(name, OnMouse, py_callback_info));
      Py_RETURN_NONE;
  }
  #endif
  
  static void OnChange(int pos, void *param)
  {
      PyGILState_STATE gstate;
      gstate = PyGILState_Ensure();
  
      PyObject *o = (PyObject*)param;
      PyObject *args = Py_BuildValue("(i)", pos);
      PyObject *r = PyObject_Call(PyTuple_GetItem(o, 0), args, NULL);
      if (r == NULL)
          PyErr_Print();
      else
          Py_DECREF(r);
      Py_DECREF(args);
      PyGILState_Release(gstate);
  }
  
  #ifdef HAVE_OPENCV_HIGHGUI
  static PyObject *pycvCreateTrackbar(PyObject*, PyObject *args)
  {
      PyObject *on_change;
      char* trackbar_name;
      char* window_name;
      int *value = new int;
      int count;
  
      if (!PyArg_ParseTuple(args, "ssiiO", &trackbar_name, &window_name, value, &count, &on_change))
          return NULL;
      if (!PyCallable_Check(on_change)) {
          PyErr_SetString(PyExc_TypeError, "on_change must be callable");
          return NULL;
      }
      PyObject* py_callback_info = Py_BuildValue("OO", on_change, Py_None);
      std::string name = std::string(window_name) + ":" + std::string(trackbar_name);
      static std::map<std::string, PyObject*> registered_callbacks;
      std::map<std::string, PyObject*>::iterator i = registered_callbacks.find(name);
      if (i != registered_callbacks.end())
      {
          Py_DECREF(i->second);
          i->second = py_callback_info;
      }
      else
      {
          registered_callbacks.insert(std::pair<std::string, PyObject*>(name, py_callback_info));
      }
      ERRWRAP2(createTrackbar(trackbar_name, window_name, value, count, OnChange, py_callback_info));
      Py_RETURN_NONE;
  }
  
  static void OnButtonChange(int state, void *param)
  {
      PyGILState_STATE gstate;
      gstate = PyGILState_Ensure();
  
      PyObject *o = (PyObject*)param;
      PyObject *args;
      if(PyTuple_GetItem(o, 1) != NULL)
      {
          args = Py_BuildValue("(iO)", state, PyTuple_GetItem(o,1));
      }
      else
      {
          args = Py_BuildValue("(i)", state);
      }
  
      PyObject *r = PyObject_Call(PyTuple_GetItem(o, 0), args, NULL);
      if (r == NULL)
          PyErr_Print();
      else
          Py_DECREF(r);
      Py_DECREF(args);
      PyGILState_Release(gstate);
  }
  
  static PyObject *pycvCreateButton(PyObject*, PyObject *args, PyObject *kw)
  {
      const char* keywords[] = {"buttonName", "onChange", "userData", "buttonType", "initialButtonState", NULL};
      PyObject *on_change;
      PyObject *userdata = NULL;
      char* button_name;
      int button_type = 0;
      int initial_button_state = 0;
  
      if (!PyArg_ParseTupleAndKeywords(args, kw, "sO|Oii", (char**)keywords, &button_name, &on_change, &userdata, &button_type, &initial_button_state))
          return NULL;
      if (!PyCallable_Check(on_change)) {
          PyErr_SetString(PyExc_TypeError, "onChange must be callable");
          return NULL;
      }
      if (userdata == NULL) {
          userdata = Py_None;
      }
  
      PyObject* py_callback_info = Py_BuildValue("OO", on_change, userdata);
      std::string name(button_name);
  
      static std::map<std::string, PyObject*> registered_callbacks;
      std::map<std::string, PyObject*>::iterator i = registered_callbacks.find(name);
      if (i != registered_callbacks.end())
      {
          Py_DECREF(i->second);
          i->second = py_callback_info;
      }
      else
      {
          registered_callbacks.insert(std::pair<std::string, PyObject*>(name, py_callback_info));
      }
      ERRWRAP2(createButton(button_name, OnButtonChange, py_callback_info, button_type, initial_button_state != 0));
      Py_RETURN_NONE;
  }
  #endif
  
  ///////////////////////////////////////////////////////////////////////////////////////
  
  static int convert_to_char(PyObject *o, char *dst, const ArgInfo& info)
  {
      std::string str;
      if (getUnicodeString(o, str))
      {
          *dst = str[0];
          return 1;
      }
      (*dst) = 0;
      return failmsg("Expected single character string for argument '%s'", info.name);
  }
  
  #ifdef __GNUC__
  #  pragma GCC diagnostic ignored "-Wunused-parameter"
  #  pragma GCC diagnostic ignored "-Wmissing-field-initializers"
  #endif
  
  
  #include "pyopencv_generated_enums.h"
  #include "pyopencv_custom_headers.h"
  
  #ifdef CVPY_DYNAMIC_INIT
  #define CVPY_TYPE(NAME, STORAGE, SNAME, _1, _2) CVPY_TYPE_DECLARE_DYNAMIC(NAME, STORAGE, SNAME)
  #else
  #define CVPY_TYPE(NAME, STORAGE, SNAME, _1, _2) CVPY_TYPE_DECLARE(NAME, STORAGE, SNAME)
  #endif
  #include "pyopencv_generated_types.h"
  #undef CVPY_TYPE
  
  #include "pyopencv_generated_types_content.h"
  #include "pyopencv_generated_funcs.h"
  
  
  static PyMethodDef special_methods[] = {
    {"redirectError", CV_PY_FN_WITH_KW(pycvRedirectError), "redirectError(onError) -> None"},
  #ifdef HAVE_OPENCV_HIGHGUI
    {"createTrackbar", (PyCFunction)pycvCreateTrackbar, METH_VARARGS, "createTrackbar(trackbarName, windowName, value, count, onChange) -> None"},
    {"createButton", CV_PY_FN_WITH_KW(pycvCreateButton), "createButton(buttonName, onChange [, userData, buttonType, initialButtonState]) -> None"},
    {"setMouseCallback", CV_PY_FN_WITH_KW(pycvSetMouseCallback), "setMouseCallback(windowName, onMouse [, param]) -> None"},
  #endif
  #ifdef HAVE_OPENCV_DNN
    {"dnn_registerLayer", CV_PY_FN_WITH_KW(pyopencv_cv_dnn_registerLayer), "registerLayer(type, class) -> None"},
    {"dnn_unregisterLayer", CV_PY_FN_WITH_KW(pyopencv_cv_dnn_unregisterLayer), "unregisterLayer(type) -> None"},
  #endif
    {NULL, NULL},
  };
  
  /************************************************************************/
  /* Module init */
  
  struct ConstDef
  {
      const char * name;
      long long val;
  };
  
  static void init_submodule(PyObject * root, const char * name, PyMethodDef * methods, ConstDef * consts)
  {
    // traverse and create nested submodules
    std::string s = name;
    size_t i = s.find('.');
    while (i < s.length() && i != std::string::npos)
    {
      size_t j = s.find('.', i);
      if (j == std::string::npos)
          j = s.length();
      std::string short_name = s.substr(i, j-i);
      std::string full_name = s.substr(0, j);
      i = j+1;
  
      PyObject * d = PyModule_GetDict(root);
      PyObject * submod = PyDict_GetItemString(d, short_name.c_str());
      if (submod == NULL)
      {
          submod = PyImport_AddModule(full_name.c_str());
          PyDict_SetItemString(d, short_name.c_str(), submod);
      }
  
      if (short_name != "")
          root = submod;
    }
  
    // populate module's dict
    PyObject * d = PyModule_GetDict(root);
    for (PyMethodDef * m = methods; m->ml_name != NULL; ++m)
    {
      PyObject * method_obj = PyCFunction_NewEx(m, NULL, NULL);
      PyDict_SetItemString(d, m->ml_name, method_obj);
      Py_DECREF(method_obj);
    }
    for (ConstDef * c = consts; c->name != NULL; ++c)
    {
      PyDict_SetItemString(d, c->name, PyLong_FromLongLong(c->val));
    }
  
  }
  
  #include "pyopencv_generated_modules_content.h"
  
  static bool init_body(PyObject * m)
  {
  #define CVPY_MODULE(NAMESTR, NAME) \
      init_submodule(m, MODULESTR NAMESTR, methods_##NAME, consts_##NAME)
      #include "pyopencv_generated_modules.h"
  #undef CVPY_MODULE
  
  #ifdef CVPY_DYNAMIC_INIT
  #define CVPY_TYPE(NAME, _1, _2, BASE, CONSTRUCTOR) CVPY_TYPE_INIT_DYNAMIC(NAME, return false, BASE, CONSTRUCTOR)
      PyObject * pyopencv_NoBase_TypePtr = NULL;
  #else
  #define CVPY_TYPE(NAME, _1, _2, BASE, CONSTRUCTOR) CVPY_TYPE_INIT_STATIC(NAME, return false, BASE, CONSTRUCTOR)
      PyTypeObject * pyopencv_NoBase_TypePtr = NULL;
  #endif
      #include "pyopencv_generated_types.h"
  #undef CVPY_TYPE
  
      PyObject* d = PyModule_GetDict(m);
  
  
      PyDict_SetItemString(d, "__version__", PyString_FromString(CV_VERSION));
  
      PyObject *opencv_error_dict = PyDict_New();
      PyDict_SetItemString(opencv_error_dict, "file", Py_None);
      PyDict_SetItemString(opencv_error_dict, "func", Py_None);
      PyDict_SetItemString(opencv_error_dict, "line", Py_None);
      PyDict_SetItemString(opencv_error_dict, "code", Py_None);
      PyDict_SetItemString(opencv_error_dict, "msg", Py_None);
      PyDict_SetItemString(opencv_error_dict, "err", Py_None);
      opencv_error = PyErr_NewException((char*)MODULESTR".error", NULL, opencv_error_dict);
      Py_DECREF(opencv_error_dict);
      PyDict_SetItemString(d, "error", opencv_error);
  
  
  #define PUBLISH(I) PyDict_SetItemString(d, #I, PyInt_FromLong(I))
      PUBLISH(CV_8U);
      PUBLISH(CV_8UC1);
      PUBLISH(CV_8UC2);
      PUBLISH(CV_8UC3);
      PUBLISH(CV_8UC4);
      PUBLISH(CV_8S);
      PUBLISH(CV_8SC1);
      PUBLISH(CV_8SC2);
      PUBLISH(CV_8SC3);
      PUBLISH(CV_8SC4);
      PUBLISH(CV_16U);
      PUBLISH(CV_16UC1);
      PUBLISH(CV_16UC2);
      PUBLISH(CV_16UC3);
      PUBLISH(CV_16UC4);
      PUBLISH(CV_16S);
      PUBLISH(CV_16SC1);
      PUBLISH(CV_16SC2);
      PUBLISH(CV_16SC3);
      PUBLISH(CV_16SC4);
      PUBLISH(CV_32S);
      PUBLISH(CV_32SC1);
      PUBLISH(CV_32SC2);
      PUBLISH(CV_32SC3);
      PUBLISH(CV_32SC4);
      PUBLISH(CV_32F);
      PUBLISH(CV_32FC1);
      PUBLISH(CV_32FC2);
      PUBLISH(CV_32FC3);
      PUBLISH(CV_32FC4);
      PUBLISH(CV_64F);
      PUBLISH(CV_64FC1);
      PUBLISH(CV_64FC2);
      PUBLISH(CV_64FC3);
      PUBLISH(CV_64FC4);
  #undef PUBLISH
  
      return true;
  }
  
  #if defined(__GNUC__)
  #pragma GCC visibility push(default)
  #endif
  
  #if PY_MAJOR_VERSION >= 3
  // === Python 3
  
  static struct PyModuleDef cv2_moduledef =
  {
      PyModuleDef_HEAD_INIT,
      MODULESTR,
      "Python wrapper for OpenCV.",
      -1,     /* size of per-interpreter state of the module,
                 or -1 if the module keeps state in global variables. */
      special_methods
  };
  
  PyMODINIT_FUNC PyInit_cv2();
  PyObject* PyInit_cv2()
  {
      import_array(); // from numpy
      PyObject* m = PyModule_Create(&cv2_moduledef);
      if (!init_body(m))
          return NULL;
      return m;
  }
  
  #else
  // === Python 2
  PyMODINIT_FUNC initcv2();
  void initcv2()
  {
      import_array(); // from numpy
      PyObject* m = Py_InitModule(MODULESTR, special_methods);
      init_body(m);
  }
  
  #endif
  