Bruno Aiazzi Luciano Alparone Stefano Baronti Near-lossless image compression by relaxation-labelled prediction. 1619-1631 2002 82 Signal Processing 11 http://dx.doi.org/10.1016/S0165-1684(02)00305-5 db/journals/sigpro/sigpro82.html#AiazziAB02