![]() ![]() ![]() In this section we’ll briefly discuss the Flask web framework and how to install it on your system.įlask is a popular micro web framework written in the Python programming language.Īlong with Django, Flask is one of the most common web frameworks you’ll see when building web applications using Python. Let’s get started! The Flask web frameworkįigure 1: Flask is a micro web framework for Python ( image source). Putting all these pieces together results in a home surveillance system capable of performing motion detection and then streaming the video result to your web browser. Stream the results to a web page/web browser.Īdditionally, the code we’ll be covering will be able to support multiple clients (i.e., more than one person/web browser/tab accessing the stream at once), something the vast majority of examples you will find online cannot handle.Process the frames and apply an arbitrary algorithm (here we’ll be using background subtraction/motion detection, but you could apply image classification, object detection, etc.).Access frames from RPi camera module or USB webcam.We’ll proceed to implement motion detection by means of a background subtractor.įrom there, we will combine Flask with OpenCV, enabling us to: We’ll learn the fundamentals of motion detection so that we can apply it to our project. In this tutorial we will begin by discussing Flask, a micro web framework for the Python programming language. Looking for the source code to this post? Jump Right To The Downloads Section OpenCV – Stream video to web browser/HTML page The second section discusses using ImageZMQ to stream live video over a network from multiple camera sources to a single central server. The first section provides suggestions for using Django as an alternative to the Flask web framework. Update July 2021: Added two new sections.To learn how to use OpenCV and Flask to stream video to a web browser HTML page, just keep reading! While I continue to do paperwork with the police, insurance, etc, you can begin to arm yourself with Raspberry Pi cameras to catch bad guys wherever you live and work. There’s nothing like a little video evidence to catch thieves. Then open your computer/smartphone browser to navigate to the URL/IP address to watch the video feed (and ensure nothing of yours is stolen).Simply install the required packages/software and start the script.You will be able to deploy the system on a Raspberry Pi in less than 5 minutes: In this post, we’ll learn how to stream video to a web browser using Flask and OpenCV. I’ve managed to use my frustrations to inspire a new security-related computer vision blog post. I’m hoping that this issue gets resolved in the next month - I hate distractions, especially distractions that take me away from what I love doing the most - teaching computer vision and deep learning. I can’t publicly go into any details until it’s resolved, but let me tell you, there’s a whole mess of paperwork, police reports, attorney letters, and insurance claims that I’m wading neck-deep through. Over the past week, my work on my upcoming Raspberry Pi for Computer Vision book was interrupted - I’ve been working with the owner of the the parking garage, the Philadelphia Police Department, and the GPS tracking service on my car to figure out what happened. I was immediately confused - this isn’t my car.Īfter a few short minutes I realized the reality - my car was stolen. I walked to my car and took off the cover. We were about to head down to Maryland to visit my parents and have some blue crab (Maryland is famous for its crabs). My wife and I arrive at the parking garage to grab my car. I heard about a garage, signed up, and started parking my car there. Parking is hard to find in our neighborhood, so I was in need of a parking garage. I have a car, which I don’t drive often, but still keep just in case of emergencies. My wife and I moved to Philadelphia, PA from Norwalk, CT about six months ago. I can’t share too many details as it’s an active criminal investigation, but here’s what I can tell you: In this tutorial, you will learn how to use OpenCV to stream video from a webcam to a web browser/HTML page using Flask and Python. ![]()
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