How can convert PyObject variable to Mat in c++ opencv code

Question

I have a c++ facerecognition code and a python code in opencv. In python code i read frames from a robot and i want to send this fram to my c++ code. I use this link tho call p

Answer 1

For Python 3.x C-API:

In Python side return the frame in bytearray format:

return bytearray(frame)

and in cpp side get it by PyByteArray_AsString function:

pData = PyObject_CallObject(pFunc, pArgs);
uchar *data = (uchar *)PyByteArray_AsString(pData );
cv::Mat img(rows, cols, CV_8UC3, data)