Installing NumPy

NumPy is a package for scientific computing with Python. It handles multidimensional arrays of operations in a very efficient way. NumPy is required by OpenCV to run and will be used by many raster operations that we will perform in the examples. NumPy is also an efficient data container and will be our tool to calculate massive image data.

Windows

Repeat the same procedure as you did to install OpenCV; however, this time, search for NumPy and choose a file named numpy‑1.9.2+mkl‑cp27‑none‑win32.whl.

Ubuntu Linux

NumPy is automatically installed as a dependency of OpenCV on Ubuntu, but if you want to install it without OpenCV, follow these steps:

1. Open a new terminal with Ctrl + T.
2. Then, enter the following command:

   sudo pip install numpy