No module named cv

Question

I\'m trying to run this script:

https://github.com/openalpr/train-detector/blob/master/crop_plates.py

I\'ve never dealt with python before. First of all I ha

Answer 1

For ImportError: No module named cv, try installing opencv-python module using below command:

pip install opencv-python

Answer 2

OK , I searched for a while and find the following :

• First: you may write: import cv2.cv as cv to solve your proplem

• cv and cv2 are both interface for python , and now , the newest "cv2" is the most used one , but clearly some libraries still use cv and others (like yours) use mix of the two,What is different between all these OpenCV Python interfaces?

Answer 3

cv2.cv doesn't exists in OpenCV 3.0. Use simply cv2

Also, the attribute is no more CV_HOUGH_GRADIENT but HOUGH_GRADIENT

So what you looking for is probably:

cv2.HOUGH_GRADIENT

Answer 4

It seems this code is using a old version of OpenCV. Unfortunately there is no mention of the exact version they used in their repo.

As the code is at least 2 years old, I would install opencv version 2.4.

pip install opencv-python==2.4