Alpha stable modeling of human visual systems for digital halftoning in rectangular and hexagonal grids GonzáLez, Alvaro J. ; Bacca RodríGuez, Jan ; Arce, Gonzalo R. ; Lau, Daniel L. Abstract Publication: Journal of Electronic Imaging Pub Date: 2008 DOI: 10.1117/1.2898122 Bibcode: 2008JEI....17a3004G