Antonelli, Terry, Stout & Kraus
Document analysis system
 A document analysis system for determining format information of a document, wherein frames and a relationship of the frames are extracted from an image of an unmarked sample document, characters in a frame of the document are recognized, and an image structure is analyzed based on the frame and the recognized characters. 
Hitachi, Ltd.
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G06V G06F
inventional inventional
Osamu Toshitsugu Hiromichi Kunihiro Yasuaki
Kunisaki Ozaki Fujisawa Okada Nakano