David Coeurjolly Serge Miguet Laure Tougne Discrete Curvature Based on Osculating Circle Estimation. 303-312 2001 conf/iwvf/2001 IWVF http://dx.doi.org/10.1007/3-540-45129-3_27 db/conf/iwvf/iwvf2001.html#CoeurjollyMT01