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In this article, we will learn how to install OpenCV for Python on Windows and verify that it works correctly. The installation process includes checking prerequisites, installing OpenCV, and running a quick version check.

Prerequisites

Python must be installed.
pip (Python package manager) must be available (usually installed with Python).

Note: If you don’t have Python, refer to this article How to install Python on Windows.

Now let's see the step-by-step installation process.

Step by Step Process

Step 1: Verify Python is installed

This step checks whether Python is installed and working on your system. Run the following command in Command Prompt (cmd):

python --version

If a version appears, Python is installed. If you get an error, install Python first.

Step 2: Verify pip is Installed

Now, we checks if pip is available, enter below command:

pip -V

If pip is not recognized, it must be installed or added to PATH.

pipVersion — Checking if pip is added to the path

(Optional) Step 3: Create and Activate a Virtual Environment

This step creates a clean environment for your project. Run these commands in Command Prompt or PowerShell.

python -m venv venv
venv\Scripts\activate

A virtual environment helps avoid package conflicts. After activation (venv) appears in your terminal.

ActivatingEnv — Creating and Activating Virtual Environment

Step 4: Install OpenCV

Now to install the OpenCV package run below command in Command Prompt or inside the activated virtual environment.

pip install opencv-python

This downloads and installs OpenCV along with NumPy.

Step 5: Verify the Installation

Now to checks whether OpenCV installed correctly, we will run below command:

python -c "import cv2; print(cv2.__version__)"

If a version number prints, OpenCV is installed and ready to use.

verifyingInstallation — Verifying OpenCV Installation

How to Install OpenCV for Python on Windows