OpenCV is a huge image and video processing library designed to work with many languages such as python, C/C++, Java, and more.

OpenCV is a software toolkit for processing real-time image and video, as well as providing analytics, and machine learning capabilities.Development BenefitsUsing OpenCV, a BSD licensed library ...

If running OpenCV on something as small as an ESP32 is possible, it is even easier to run on something orders of magnitude more powerful and yet still inexpensive, such as the Raspberry Pi.