Tesseract is a bare-bones OCR engine. The build process is a little quirky, and the engine needs some additional features (such as layout detection), but the core feature, text recognition, is ...

Using a headless Raspberry Pi 4 or 5 running Tesseract OCR, the device has a microswitch shutter to take a picture of a poster or other object.

This competent freebie is excellent for extracting text, and that’s all it does. FreeOCR is a nice, simple front-end for HP’s public domain Tesseract OCR engine (now used by Google) and is ...