The Ghent University Library has a collection of scanned records of 1.1 million catalogue cards. They already had partially digitized some records but a big collection of books remained unavailable in the main database. They risked having as much as a complete floor in our book depository full of items which are not used because these cannot be discovered on the web.
By performing OCR with the Google Vision API and by running entity detection, we were able to turn the scanned cards into valuable records that could be added to the main library database. On top of that some cleaning was done to delete outdated records, remove duplicates and extract the call number of each card (which indicates the location of a book).