Calling open cv python code for image display from C visual studio

Question

I am trying to call image display code of python from C using cython.

I had followed the procedure for creating .c and .h from .pyx and adding these into the C code in visual studio.

I had checked the python version on command prompt and it is Python 3.6.3 |Anaconda custom (64-bit). I am able to import cv2 there on command prompt.

But when I call this .c and .h file into C code I am getting error

NameError: name 'cv2' is not defined
Exception ignored in: 'read.readImage'
NameError: name 'cv2' is not defined

I had checked for python path is set in the environment. Still I am getting the error.

The code for read.pyx is

import numpy as np
import cv2
cdef public void readImage():
 img = cv2.imread('dog.jpeg')
 print('reading')
 cv2.imshow('image',img)
 cv2.waitKey(0)
 cv2.destroyAllWindows()

The code for souce.cpp in visual studio is

#include "Python.h" 
# include "read.h"
using namespace cv;
int main(void) {
 Py_Initialize(); 
 PyInit_read();
 readImage();
 Py_Finalize(); 
 return 0;
}

• ead: That might be your issue, but it is impossible to say without code stackoverflow.com/q/50382755/5769463
• ead: Compare the results of import sys; print(sys.path) in your python installation and in the standalone exe. I wouldn’t be surprised if they differ. You said the python path is set, to which value?
• Pratiksha: Thanks a lot. It was issue of python path only. It is resolved now.

Answer 1

The same python version is installed twice at different location. The issue was regarding python path.