Unable To Detect Face And Eye With Opencv In Python

This code is to detect face and eyes using webcam but getting this error Traceback (most recent call last): File 'D:/Acads/7.1 Sem/BTP/FaceDetect-master/6.py', line 28, in <

Solution 1:

I think it is just a problem of indentation.

roi is out of scope when you go out of the faces loop.

for(x,y,w,h)in faces:cv2.rectangle(frame,(x,y),(x+w,y+h),(0,255,0),2)roi=frame[y:y+h,x:x+w]# eyes detection runs for each faceeyes=eyeCascade.detectMultiScale(roi)for(ex,ey,ew,eh)in eyes:cv2.rectangle(roi,(ex,ey),(ex+ew,ey+eh),255,2)