Yang Wu Nanning Zheng Qubo You Shaoyi Du Object Recognition by Learning Informative, Biologically Inspired Visual Features. 181-184 2007 ICIP (1) http://dx.doi.org/10.1109/ICIP.2007.4378921 conf/icip/2007 db/conf/icip/icip2007-1.html#WuZYD07