Sebastiano Battiato Gianpiero di Blasi Giovanni Gallo Giuseppe Claudio Guarnera Giovanni Puglisi A Novel Artificial Mosaic Generation Technique Driven by Local Gradient Analysis. 76-85 2008 ICCS (2) http://dx.doi.org/10.1007/978-3-540-69387-1_9 conf/iccS/2008-2 db/conf/iccS/iccS2008-2.html#BattiatoBGGP08