Dimitris Agrafiotis David R. Bull Cedric Nishan Canagarajah Nawat Kamnoonwatana Multiple Priority Region of Interest Coding with H.264. 53-56 2006 conf/icip/2006 ICIP http://dx.doi.org/10.1109/ICIP.2006.313201 db/conf/icip/icip2006.html#AgrafiotisBCK06