OpenCV also comes with a large catalog of extra modules for other, highly specific tasks: direct access to encoding/decoding of video, adding text to images, video stabilization, text detection in scenes, and many more. One of these modules, datasets, provides a way to load well-known, pretrained datasets for common tasks (face recognition or gesture recognition, pedestrian detection, etc.) that can be used to make predictions or to generate performance benchmarks for those tasks.
Another convenient OpenCV feature is the high-level GUI module, which lets you create simple GUIs—windowing, buttons, images, mouse operations—with nothing but OpenCV. This is handy not only for quick prototypes, but even for creating a simple application without having to reach for an entire UI framework like GTK to create the front end. High-level GUI is no substitute for GTK or app frameworks like Electron, but it isn’t meant to be.
Fast and flexible computer vision
OpenCV’s big benefits go beyond giving you a prepackaged set of algorithms to perform computer-vision work. You can use OpenCV also to serve predictions from models for related tasks, like object recognition, without having to spin up extra infrastructure. And you can use it to build basic GUIs for those tasks with no extra libraries—quite handy to have when working with images or video. Finally, OpenCV’s decades of development and ongoing advancement make it a solid base to build on going forward.
