ZhenQiu Zhang Yuxiao Hu Tianli Yu Thomas S. Huang Minimum Variance Estimation of 3D Face Shape from Multi-view. 547-552 2006 conf/fgr/2006 FG http://doi.ieeecomputersociety.org/10.1109/FGR.2006.77 db/conf/fgr/fgr2006.html#ZhangHYH06