Build a Real-Time Face Tracker with FastAPI & OpenCV (Python Tutorial)

Description

Learn how to build a lightning-fast, real-time face detection streaming API using Python, FastAPI, and OpenCV! 🚀📷 In this tutorial, we dive into computer vision and web APIs by creating an application that captures your webcam's video stream, processes it frame-by-frame to detect human faces using OpenCV's Haar Cascade Classifiers, and serves the live annotated video feed directly to your web browser using FastAPI's StreamingResponse. Whether you're looking to build a security camera web app, a smart mirror, or just want to learn how to stream live video with FastAPI, this project is the perfect starting point. No complex frontend code required—we'll stream MJPEG (Motion JPEG) seamlessly to any modern browser! 👇 What you will learn in this video: • Setting up a FastAPI application from scratch. • Accessing your webcam using OpenCV (cv2.VideoCapture). • Implementing real-time face detection using Haar Cascades. • Creating a video frame generator in Python. • Streaming live video over an HTTP endpoint using StreamingResponse and multipart/x-mixed-replace. 🔗 Resources & Links: • Source Code (GitHub Repo): [https://github.com/Manav1918/fastapi-face-tracker.git] • FastAPI Documentation: https://fastapi.tiangolo.com/ • OpenCV Python Documentation: https://pypi.org/project/opencv-python/ ⏱️ Timestamps: 0:00 - Intro & Project Demo 0:34 - Channel Intro 1:08 - Prerequisites & Environment Setup 1:57 - Import dependencies 2:27 - Initializing the FastAPI App & Capturing Webcam Video with OpenCV 2:40 - Implementing Face Detection (Haar Cascades) 3.02 - Creating the Frame Generator function 5:14 - Streaming Video with FastAPI StreamingResponse 5:56 - Running and Testing the API in the Browser 8:15 - Outro & Next Steps 💻 Commands used in this video: bash # Create Virtual Environment python -m venv venv # Activate Environment (Windows) venv\Scripts\activate # Install Dependencies pip install fastapi uvicorn opencv-python # Run the Server uvicorn main:app --reload 👨‍💻 Connect with me: • LinkedIn: https://www.linkedin.com/in/cideduhub/ • GitHub: https://github.com/Manav1918/ • Facebook: https://fb.me/cideduhub 👍 If you found this video helpful, please hit the LIKE button, SHARE it with fellow developers, and SUBSCRIBE for more Python, API, and Computer Vision tutorials! Let me know in the comments what you'd like to see next! #FastAPI #OpenCV #Python #ComputerVision #FaceDetection #WebAPI #PythonTutorial #Coding #Programming #MachineLearning #WebcamStreaming Join this channel to get access to perks: https://www.youtube.com/channel/UCI8lKQKe0TufqPG50GY0kSg/join