Very interesting. Way back my old university was also involved in historical document processing https://www.rug.nl/research/portal/files/40224455/Chapter_7.... they also looked at things like writer identification and trying to automatically date the documents using a wide array of hand crafted features. Curious what would happen with some of the newer deep learning models, but the project has been dead for a while http://application02.target.rug.nl/cgi-bin/monkweb?db=All&cm... … as these things go