Scanned image is not usual compression aim today, IMHO. Besides, regular structure of printed images is far away from pure digital picture. Huge uncompressed RAW images from 39 Mpix cameras (http://www.jirvana.com/raw_large/p45/, http://raw.fotosite.pl/) or astronomic CCD arrays will be more acceptable. Anyway, there are specialized compressors for images![]()