[PDF] Download OpenCV Python Tutorial (PDF Version)

Is there a tutorial on OpenCV-Python?

Now an official tutorial on OpenCV-Python is available at opencv website. It covers almost most of important functions of OpenCV-Python API. This tutorial is using OpenCV 3.x version. (So some tutorials may not be compatible with OpenCV 2.x)

What are the parameters of OpenCV 2 polylines?

cv2.polylines(img, pts, isClosed, color, thickness) Parameters 14 Chapter 3. OpenCV Python Documentation, Release 0.1 •img– image

How to read an image using OpenCV?

To read an image using OpenCV, you can use the cv2.imread () function. This function takes the filename of the image as an argument and returns a NumPy array representing the image. Here’s an example: In this example, we load an image called image.jpg using cv2.imread ().

Does OpenCV-Python support CV2 import?

The opencv-python packages only provide the cv2 import. That is the import for all v3.x and 4.x versions, i.e. the current version, and probably will carry into v5.x. The recommended import and usage is: There is no opencv import. If that "worked", it's wrong and something is tricking you. Check the installed packages and remove anything shady.