Which version of Python works best with OpenCV?

2 Answers. Install python 3.7 with anaconda package and use this command to install opencv.

What version of OpenCV do I have Python?

After installation, it is recommended that you can check the version of OpenCV that Python is using: import cv2 print cv2. __version__ # Should print 3.0.

How do you use surf on OpenCV?

SURF in OpenCV

1. >>> img = cv.imread(‘fly.png’,0) # Create SURF object.
2. # Check present Hessian threshold. >>> print( surf.getHessianThreshold() )
3. # Check upright flag, if it False, set it to True. >>> print( surf.getUpright() )
4. # Find size of descriptor. >>> print( surf.descriptorSize() )

Does Python 2.7 support OpenCV?

Install OpenCV 3.0 and Python 2.7+ on Ubuntu I have personally tested these instructions on Ubuntu 14.04, but they should pretty much work on any Debian-based operating system. A quick note before we get started: Yes, OpenCV 3.0 is indeed compatible with Python 3+. But for the time being, let’s stick with Python 2.7.

Does cv2 work with Python 3?

Start the Python shell by typing python3 and then hit enter. You will be inside the Python shell where you can execute your Python code. Import the cv2 package which is the name of the OpenCV module. Type “import cv2” and hit enter.

How do you purge OpenCV?

If you installed OpenCV from package manager, it’s best to remove those packages. Check: apt list –installed | grep opencv . If you built it yourself, and you still got the build folder, run sudo make uninstall from the OpenCV build directory.

Why is OpenCV called cv2?

cv2 (old interface in old OpenCV versions was named as cv ) is the name that OpenCV developers chose when they created the binding generators. This is kept as the import name to be consistent with different kind of tutorials around the internet.

Is SURF free OpenCV?

SIFT and SURF are examples of algorithms that OpenCV calls “non-free” modules.