I have used the same code as the video but I am getting the following error. FYI, i have defined face_section in a ‘for loop’ and am trying to access it just after the end of the loop. As per my understanding, I should be able to do this is python.
Traceback (most recent call last):
File “face data collect.py”, line 47, in
cv2.imshow('face section', face_section)
NameError: name ‘face_section’ is not defined
Hey @mohitb, yes you will be able to use local variable outside its scope in python, but just make sure that line containing face_section = … , must run before cv2.imshow(‘face section’, face_section) in all conditions. So one easy hack you can use is, use face_section = np.zeros(100,100,3) initially before the for loop.
Hope this resolved your doubt. 
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