Can I use cv.CreateMat(2, 1, cv.CV_32FC1) in OpenCV 3.0.0?

edit

no, you can't use cv functions in opencv3.0 any more, the old cv python api was removed.

if you want to create an empty image in cv2, use numpy: img = np.zeros((h, w, 3), np.uint8)

Thanks, berak! As for the second problem, would you please give me any information?

we'll try , at least ;)

but please, could you update your question, and show a liitle more code ?

somehow, it does not like your image[i] , but impossible to say why, atm.

Thanks berak! I update with a screenshot of the code, I am new to the forum so I am really sorry if any inconvenience caused! Thank you for your time and help~~~

please no, not an unreadable screenshot ! ;(

please paste some text , so folks here can even go and try it ..

when in doubt, try python's builtin help function:

>>> help(cv2.findChessboardCorners)
Help on built-in function findChessboardCorners:

findChessboardCorners(...)
    findChessboardCorners(image, patternSize[, corners[, flags]]) -> retval, cor
ners

so, since there's an optional corners argument before the flags one, you have to specify flags as key-value pair, like:

retcode, cor = cv2.findChessboardCorners(image[i], patternSize, flags=cv2.CALIB_CB_ADAPTIVE_THRESH | cv2.CALIB_CB_FILTER_QUADS)