TesseractOCR (nuget): Tesseract 5.3.1 adds a new neural net (LSTM) based OCR engine which is focused on line recognition, but also still supports the legacy Tesseract OCR engine of Tesseract 3  which works by recognizing character patterns. Compatibility with Tesseract 3 is enabled by using the Legacy OCR Engine mode (--oem 0). It also needs traineddata files  which support the legacy engine, for example those from the tessdata repository.
Keywords: Tesseract|OCR|text|readable|PDF