OpenCV2-Python-Tutorials issues

createStereoBM function name changed

`createStereoBM` [doesn't](https://answers.opencv.org/question/158398/createstereobm-does-it-or-does-it-not-exist/) seem [to](https://stackoverflow.com/questions/21702945/attributeerror-module-object-has-no-attribute) exist [anymore](https://stackoverflow.com/questions/54991771/attributeerror-module-cv2-has-no-attribute-createstereobm). Thanks for the great website by the way!

vwvw

typo at line 10

Blur imagess with various low pass filters. Spelling mistake of 'images'.

1993jayant

Otsu's Binarization, typo at line 172 and line 176

At line 172: q_1(t) = \sum_{i=1}^{t} P(i) \quad \& \quad q_2(t) = \sum_{i=t+1}^{I} P(i) instead of q_1(t) = \sum_{i=1}^{t} P(i) \quad \& \quad q_1(t) = \sum_{i=t+1}^{I} P(i). In the formula...

1993jayant

Update py_calibration.rst

Minor code changes in re-projection error.

AND2797

apertureSize is actually 5th argument

Ref: Canny(image, threshold1, threshold2[, edges[, apertureSize[, L2gradient]]]) -> edges

keineahnung2345

where is the star.jpg and test.jpg

most of pictures in samples cannot be found

Angus2016

projection error calculated correctly?

Hello, I was checking the calculation of the projection errors. And I dont get my head around how it is calculated. I think it is not correct. Please correct me...

BenPrae