Kenji Hontani Takaaki Imanaka Gen Fujita Takao Onoye Isao Shirakawa Realtime face object extraction algorithm for video phone. 35-38 2002 conf/apccas/2002 APCCAS (1) http://dx.doi.org/10.1109/APCCAS.2002.1114903 db/conf/apccas/apccas2002-1.html#HontaniIFOS02