Hongqing Zhu Huazhong Shu Jian Zhou Limin Luo Jean-Louis Coatrieux Image analysis by discrete orthogonal dual Hahn moments. 1688-1704 2007 28 Pattern Recognition Letters 13 http://dx.doi.org/10.1016/j.patrec.2007.04.013 db/journals/prl/prl28.html#ZhuSZLC07