Masao Shimizu Masatoshi Okutomi Monocular Range Estimation through a Double-Sided Half-Mirror Plate. 347-354 2007 conf/crv/2007 CRV http://doi.ieeecomputersociety.org/10.1109/CRV.2007.46 db/conf/crv/crv2007.html#ShimizuO07