Mhamed Sayyouri Abdeslam Hmimid Hassan Qjidaa A fast computation of charlier moments for binary and gray-scale images. 101-105 2012 CIST https://doi.org/10.1109/CIST.2012.6388071 conf/cist/2012 db/conf/cist/cist2012.html#SayyouriHQ12