G PHYSICS
G06 COMPUTING OR CALCULATING; COUNTING
G06V IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
30/00 Character recognition; Recognising digital ink; Document-oriented image-based pattern recognition
G06V30/40 Document-oriented image-based pattern recognition
G06V30/41 Analysis of document content
G06V30/412 Layout analysis of documents structured with printed lines or input boxes, e.g. business forms or tables