picture technology

OCR (Optical Character Recognition): Optical Character Recognition, refers to the process of analyzing and recognizing the text in the picture file and obtaining it.
Tesseract: An open source OCR recognition engine. The initial Tesseract engine was developed by HP Labs, and later contributed to the open source software industry. It was later improved by Google to eliminate bugs, optimize, and re-release.
Uses:
1. Image text recognition


OpenCV is an Intel® open source computer vision library. It consists of a series of C functions and a few C++ classes that implement many common algorithms in image processing and computer vision.
Uses:
1. Face recognition
2. License plate recognition
3. Image detection and processing