On press color control system

摘要: A novel color quality control system (10) for monitoring deviations in during the startup and continuous running phases of printing is disclosed. The maintains a printed page press constant, within context human perceptual space optimizes settings plurality ink keys accordance with test image reference image. images comprise key zones corresponding to keys, each zone including regions interest (ROIS). includes unit (12) imaging an area generating images, (14) extracting information based on actual colors from image, (16) measuring (18) analyzing comparing global features (ROIS) that cover substantially gamut against like analysis comparison are ROIs, all located same zone, operates generate set CMYK changes be applied keys. also applying