| 摘要 |
A system for reducing toner or ink consumption in rendering images, in which a transfer function is used to modify screening of the image to be rendered. R endering systems including the use of single or multiple colors can employ the presen t invention. An algorithm is used in the present system to read in an arbitrary halftone dot and for each pixel in the halftone cell the output is a replicate of the threshold, Ta or Tb, surrounded by three pixels of white thresholds, a smooth transition from white to the now reduced maximum area coverage (such as 25%), while creating or maintaining the appea rance of image uniformity at this reduced maximum area coverage.
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