Unsharp masking for draft mode rendering of digital images

摘要

A process for selectively operating an engine that renders digitally represented images in a reduced marking material mode and at least one other mode, said method comprising the steps of producing a digitally represented unsharp mask of such an image and combining said unsharp mask with said witness with a relatively high weight being given to said unsharp mask for operating said engine on said reduced marking material mode and substantially less weight being given to said unsharp mask for operating said engine in said other mode. IMAGE