Method and device for improving processing of grey level image data sets subjects graphical or non-saturated and saturated text images to halftone processes for reducing anti-aliasing effects.

摘要

A printing/display device (400) has an image-processing system (10). A scanner (410) scans a document by using an 8-bit signal to relay the scanned thickness. Raw scanned image data passes through a gamma corrector (414). Mixed halftone grey value data for pixels undergoes processing to improve grey level edges in order to replace specific binary pixels along an edge and so reduce an anti-aliasing effect. Independent claims are included for (1) a device fro grey level processing (2) an image