Dimitris Agrafiotis Nishan Canagarajah David R. Bull Jim Kyle Helen Seers Matthew Dye A perceptually optimised video coding system for sign language communication at low bit rates. 531-549 2006 21 Signal Process. Image Commun. 7 https://doi.org/10.1016/j.image.2006.02.003 https://www.wikidata.org/entity/Q58044168 db/journals/spic/spic21.html#AgrafiotisCBKSD06