OpenCV

OpenCV (Open Source Computer Vision Library) is the world’s largest, Apache 2-licensed library for real-time computer vision and machine learning.

OpenCV is the definitive, cross-platform library for computer vision, packing over 2500 optimized algorithms for tasks like object detection, 3D reconstruction, and image processing. It’s built on C++ but offers robust interfaces for Python, Java, and MATLAB, supporting real-time applications across Windows, Linux, macOS, and mobile platforms. Originally an Intel initiative, it’s now managed by the non-profit Open Source Vision Foundation. With over 40 million estimated monthly downloads, it’s the go-to tool for major companies (Google, Microsoft, IBM) and startups alike, driving everything from automated surveillance to advanced robotics.

https://opencv.org