Python opencv "incompatability"

nubee here and there's probably a simple answer I'm missing.



I want to create a head tracking interface for a flight simulator. I'm going to use opencv for image acquisition and processing and use vjoy to emulate the joystick (which the flight simulator can pick up & recognise).



As part of developing a toolkit of routines I have a program which highlights the brightest & darkest points in a captured frame which works well. However when I simply import the vjoy library in it forces a reset of the shell even though there are no other active libraries or lines.

import numpy as np

import pyvjoy #works if I comment this line out

import cv2



cap = cv2.VideoCapture(0)

#j = pyvjoy.VJoyDevice(1)



while(True):

# Capture frame-by-frame

ret, frame = cap.read()



# Our operations on the frame come here

gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)

minV, maxV, minloc, maxloc = cv2.minMaxLoc(gray)



# look for darkest pixel & put a white cross

xmin = minloc[0]

ymin = minloc[1]

xmin_lft = xmin - 5

ymin_lwr = ymin - 5

xmin_right = xmin + 5

ymin_upper = ymin +5

pt1 = (xmin_lft, ymin)

pt2 = (xmin_right, ymin)

pt3 = (xmin , ymin_lwr)

pt4 = (xmin , ymin_upper)



# look for brightess pixel & put a black cross

xmax = maxloc[0]

ymax = maxloc[1]

xmax_lft = xmax - 5

ymax_lwr = ymax - 5

xmax_right = xmax + 5

ymax_upper = ymax +5

pt5 = (xmax_lft, ymax)

pt6 = (xmax_right, ymax)

pt7 = (xmax , ymax_lwr)

pt8 = (xmax , ymax_upper)



cv2.line(gray,pt1,pt2,(255,0,0),1)

cv2.line(gray,pt3,pt4,(255,0,0),1)



cv2.line(gray,pt5,pt6,(0,255,0),1)

cv2.line(gray,pt7,pt8,(0,255,0),1)



# Display the resulting frame

cv2.imshow('frame - press q to exit',gray)


# code does nothing except transfer a value over
(vjoy lines commented out until import problem resolved)

# xAxis=xmin*0x8000

# j.set_axis(HID_USAGE_X, xAxis)



if cv2.waitKey(1) & 0xFF == ord('q'):

break



# When everything done, release the capture

cap.release()

cv2.destroyAllWindows()


Help appreciated. Paul