Face recognition using local statistics of gradients and correlations. - Ying Ai Ju; Hyun Joo So; Nam Chul Kim; Mi Hye Kim (EUSIPCO, 2010)

Face recognition using multi-lag directional local correlations. - Nam Chul Kim; Ying Ai Ju; Hyun Joo So; Mi Hye Kim (ICME, 2011)