High speed system for image scaling

摘要: A system converts a source image (10), which may include plural grey level pixels at first resolution level, to destination (18) second level. The employs scaling subsystem including memory (86) stores least portion of row pixels, scale factor and relative input index array (RIIA) (92) comprising single bit for each column the (18). Each enables pixel be identified used in (10) resolution. logic circuit (200, 212, 208) is responsive associate one with further includes control processor (100) calculates RIIA based upon stored (86).