... number of techniques aim at deriving information regarding physicalcharacteristics of humans, mainly in the form of 3D head orfull-body models.The interest of the scientific community for anthro-pocentric ... 21Department of Informat ics, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece2Informatics and Telematics Institute, CERTH, 57001 Thermi-Thessaloniki, Greece3Department of Computing, ... et al.deals with the important problem of visual speech recog-nition. More specifically, the paper studies and comparestheperformanceofanumberoftransform-basedfeatures(including novel features...