Document registration using projective geometry
Reza Safari, Natarajan Narasimhamurthi, M. Shridhar, Majid A. Ahmadi · IEEE Transactions on Image Processing · 1997
A technique for extracting filled-in information in form documents is presented. The transformation that is required to convert a filled-in form to match the master (blank form) is derived using results from projective geometry. Experimental studies with several forms indicate the proposed technique to be accurate and robust.