CPC Subgroup
G06V 30/418 Document matching, e.g. of document images
Full Title
Character recognition; Recognising digital ink; Document-oriented image-based pattern recognition (scanning, transmission or reproduction of documents or the like H04N1/00) > Document-oriented image-based pattern recognition > Analysis of document content (recognition of printed characters based on code marks G06V30/224) > Document matching, e.g. of document images