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Wrap OpenCV Mat as numpyarray hangs?

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0

I am using opencv v3.4.2 with QT Creator IDE in C++.

I am trying to wrap an OpenCV matrix (Mat) as a numpyarray (PyObject *) so that I can pass it to a python script for processing. I am using the built-in wrapper functions from here: opencv/cv2.cpp. In particular this function:

PyObject* pyopencv_from(const Mat& m)

 if( !m.data )
 Py_RETURN_NONE;
 Mat temp, *p = (Mat*)&m;
 if(!p->u 

So I have something like this:

Mat frame;
/*frame is populated*/
PyObject* pMat = opencv_from(frame);

The code compiles fine but when I call the function it hangs on m.copyTo(temp).

Does anyone have any advice on why this is not working ? Thanks.

python c++ numpy opencv mat

share|improve this question

asked Mar 8 at 11:16

RPHRPH

11

add a comment | 

0

I am using opencv v3.4.2 with QT Creator IDE in C++.

I am trying to wrap an OpenCV matrix (Mat) as a numpyarray (PyObject *) so that I can pass it to a python script for processing. I am using the built-in wrapper functions from here: opencv/cv2.cpp. In particular this function:

PyObject* pyopencv_from(const Mat& m)

 if( !m.data )
 Py_RETURN_NONE;
 Mat temp, *p = (Mat*)&m;
 if(!p->u 

So I have something like this:

Mat frame;
/*frame is populated*/
PyObject* pMat = opencv_from(frame);

The code compiles fine but when I call the function it hangs on m.copyTo(temp).

Does anyone have any advice on why this is not working ? Thanks.

python c++ numpy opencv mat

share|improve this question

asked Mar 8 at 11:16

RPHRPH

11

add a comment | 

I am using opencv v3.4.2 with QT Creator IDE in C++.

I am trying to wrap an OpenCV matrix (Mat) as a numpyarray (PyObject *) so that I can pass it to a python script for processing. I am using the built-in wrapper functions from here: opencv/cv2.cpp. In particular this function:

PyObject* pyopencv_from(const Mat& m)

 if( !m.data )
 Py_RETURN_NONE;
 Mat temp, *p = (Mat*)&m;
 if(!p->u 

So I have something like this:

Mat frame;
/*frame is populated*/
PyObject* pMat = opencv_from(frame);

The code compiles fine but when I call the function it hangs on m.copyTo(temp).

Does anyone have any advice on why this is not working ? Thanks.

python c++ numpy opencv mat

share|improve this question

asked Mar 8 at 11:16

RPHRPH

11

PyObject* pyopencv_from(const Mat& m)

 if( !m.data )
 Py_RETURN_NONE;
 Mat temp, *p = (Mat*)&m;
 if(!p->u 

Mat frame;
/*frame is populated*/
PyObject* pMat = opencv_from(frame);

share|improve this question

asked Mar 8 at 11:16

RPHRPH

11

share|improve this question

asked Mar 8 at 11:16

RPHRPH

11

asked Mar 8 at 11:16

RPHRPH

11

asked Mar 8 at 11:16

RPHRPH

11