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Most projects using OpenCV are based on image manipulation. 3 Examples to get started with OpenCV on Raspberry Pi First script: manipulate images with OpenCV The main goal of this tutorial was to get you there with OpenCV working in a Python script, but I’ll show you 3 examples to go a bit further. If you get the version number on your screen, you are ready to start using OpenCV. Create the file with Nano and run it with: I’m using Thonny as it’s preinstalled on Raspberry Pi OS, but you can do the same test in a terminal, via SSH, or on a Lite version of Raspberry Pi OS if you like. If you experience any error at this point, make sure to double-check the previous steps, as you probably missed something. When you run this script, it should display the current OpenCV version installed on your system: Create a new file and copy the following lines into it: Once OpenCV is installed on your Raspberry Pi, create a quick test to make sure it’s working as expected.

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For example, install libopencv-dev instead to use it with C++.Īre you a bit lost in the Linux command line? Check this article first for the most important commands to remember and a free downloadable cheat sheet so you can have the commands at your fingertips. I’m going to use Python for this tutorial, as it’s the easiest way to start ( everything is ready for Python on Raspberry Pi OS), but OpenCV can also be used with other languages. This command will install all the dependencies, and it will work directly after that. I’ve seen many tutorials where they do the installation from the source code, but it’s pretty complicated and you don’t need to install it that way anymore. Installing OpenCV on Raspberry Pi OS can be done with apt directly. Once ready, you can move to the OpenCV installation.

Enabling SSH and/or VNC is probably a good idea if you want to follow this tutorial from your computer directly.Connect to the Internet (via Ethernet or Wi-Fi).Whether you are installing it from scratch, make sure you do the following steps before going further: Keep Python coding syntax at your fingertips with this handy cheat sheet! It comes with Python preinstalled, so you’ll just need to add the OpenCV library before creating your first script.Ĭlaim Your Python Syntax Reference Sheet! The easiest way to use OpenCV on Raspberry Pi is to use the official operating system: Raspberry Pi OS. Install OpenCV on Raspberry Pi Get Raspberry Pi OS

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First, let’s learn how to install the software on your system. Well, this is not exactly the easiest project to get started with OpenCV, but it gives you an idea. If it matches, you can send a signal to the GPIO pins (or a smart device) to open the garage door.

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You can for example have the camera detect when your car shows up in front of the garage (object detection), find the license plate, and read the number on it (text recognition).

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Typical examples of OpenCV use are image manipulation (I’ll give you some basic code to do this later), object detection (recognizing a specific type of object, like a face or pet), or object tracking (a robot can follow you, for example).Ī classic OpenCV project will use other features from the Raspberry Pi, like the camera module and the GPIO pins.

If you are reading this, you have probably already seen some cool projects using it. In short, it’ll provide you with interesting functions to manipulate images and videos. OpenCV is an open-source library, compatible with languages like Python or C++, which allows you to build computer vision and machine learning projects.īy the way, CV stands for “Computer Vision”. Get 10% off by downloading it today! What is OpenCV? Raspberry Pi without Python is like a car without an engine, you miss all the fun parts. It will guide you step-by-step to learn the essential concepts (and only the essential concepts) required to achieve any project in the future. Let’s start with a brief introduction to OpenCV and its main features, and then I’ll show you how to install it on your Raspberry Pi and create your first scripts with it.īy the way, if you get overwhelmed as soon as Python is required for a project, I recommend checking out my e-book “ Master Python on Raspberry Pi“. For Python, it can be installed with apt, by using the following command: sudo apt install python3-opencv. The OpenCV library is now available in the default repository on Raspberry Pi OS and most Linux distributions. That’s why I wrote this tutorial, to help you to get started with OpenCV. But before doing all of this, you have to set it up correctly, and it isn’t straightforward for beginners. Even if the Raspberry Pi is a cheap piece of hardware, showing it with a camera, using artificial intelligence and electronics is pretty impressive. OpenCV is often used to promote Raspberry Pi capacities.