Vito Cappellini Andrea Del Mastio Alessia De Rosa Alessandro Piva A. Pelagotti Hala El Yamani An automatic registration algorithm for cultural heritage images. 566-569 2005 ICIP (2) http://dx.doi.org/10.1109/ICIP.2005.1530118 db/conf/icip/icip2005-2.html#CappelliniMRPPY05