OpenCV python on raspberry

Question

I've installed on my raspberry opencv python module and everything was working fine. Today I've compiled a C++ version of OpenCV and now when I want to run my python script i get this error:

Traceback (most recent call last): File "wiz.py", line 2, in import cv2.cv as cv ImportError: No module named cv

please, stick with cv2. also, opencv3.0 does no more come with the deprecated cv2.cv. if your script requires the old api, consider updating that. — berak
– berak, Commented Dec 9, 2014 at 16:54
Ok, but when i change everything from cv to cv2 for example: imgHSV = cv.CreateImage(cv.GetSize(img), 8, 3) I get an error that the function doesnt exist. — Daniel Koczuła
– Daniel Koczuła, Commented Dec 9, 2014 at 16:57
^^ yes, just adapt to the newer cv2 api, those calls do no more exist — berak
– berak, Commented Dec 9, 2014 at 16:57
yes, exactly. (and you should have done that long ago already) — berak
– berak, Commented Dec 9, 2014 at 17:05

Hans van Schaick · Accepted Answer · 2014-12-09 19:21:38Z

3

Check the API docs for 3.0. Some python functions return more parameters or in a different order.

example: cv2.cv.CV_HAAR_SCALE_IMAGE was replaced with cv2.CASCADE_SCALE_IMAGE

or

(cnts, _) = cv2.findContours(...) now returning the modified image as well (modImage, cnts, _) = cv2.findContours(...)

answered Dec 9, 2014 at 19:21

Hans van Schaick

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