python - TypeError: 'NoneType' object has no attribute '__getitem__15' -

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hello every one, want ro run camshift algorithm error created during running time. error is:

traceback (most recent call last): file "c:\python27\code\extra algorithms\camshift in opencv.py", line 11, in <module> roi = frame[r:r+h, c:c+w] typeerror: 'nonetype' object has no attribute '__getitem__10'

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probably frame none. can't index you're doing in frame[r:r+h, c:c+w]. should initialize variable or handle case when it's none.


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