https://www.c-sharpcorner.com/Downloads/22/finereader-engine-9-0.aspx
FineReader Engine 9.0
finereader engine90
https://www.abbyy.com/ocr-sdk/features/image-processing/
Image processing functions for a better OCR quality - ABBYY FineReader Engine
FineReader Engine performs a range of image pre-processing functions to improve the quality of document images and deliver highly accurate OCR recognition.
image processingabbyy finereaderfunctions
https://www.abbyy.com/fr/ocr-sdk/features/pdf-conversion/
PDF conversion SDK: powerful PDF processing tools - ABBYY FineReader Engine
OCR SDK with intelligent PDF processing features: extraction of internal PDF information, PDF output, conversion to PDF/A, PDF MRC compression, etc.
pdf conversionpowerful processingabbyy finereadersdktools