Takaharu Miyoshi Weiqing Li Kazufumi Kaneda Hideo Yamashita Eihachiro Nakamae Geometric Correction of Scanned Topographic Maps Using Capable Input Information. 8-13 2003 GMAG http://csdl.computer.org/comp/proceedings/gmag/2003/1985/00/19850008abs.htm db/conf/gmp/gmag2003.html#MiyoshiLKYN03