Ying Shan Harpreet S. Sawhney Bogdan Matei Rakesh Kumar Shapeme Histogram Projection and Matching for Partial Object Recognition. 568-577 2006 28 IEEE Trans. Pattern Anal. Mach. Intell. 4 http://doi.ieeecomputersociety.org/10.1109/TPAMI.2006.83 db/journals/pami/pami28.html#ShanSMK06