Tag Archives: openCV

Open an Image with OpenCV in Python

The following code will get you started to load and display an image with OpenCV and Python.

OpenCV functions used:

The code


Boilerplate code


Where to next?

Install OpenCV 3.x with Python 2.7 on Ubuntu

Updated: 10/11/2016

How to Install OpenCV 3.x and Python 2.7+ on Ubuntu

Step 1:

Open a terminal window and update the apt package manager lists and upgrade any currently installed packages:

Step 2:

Install developer tools:

Step 3:

Install packages to open image formats including JPEG, PNG, TIFF, and others:

Step 4:

Install the GIMP toolkit (GTK+) which OpenCV uses to build GUIs:

Step 5:

Install packages to open video formats:

Step 6:

Install libraries that optimize various routines in OpenCV:

Step 7:

Install pip, a package manager for Python:

https://pip.pypa.io/ is the official pip website

Step 8:

Install Python 2.7 development tools:

Step 9:

Install numpy because OpenCV stores images as NumPy arrays

This post follows, updates and adds to the instructions from Py Image Search here: http://www.pyimagesearch.com/2015/06/22/install-opencv-3-0-and-python-2-7-on-ubuntu/