Vector half-toning with minimum luminance variation dot...

Details Vector half-toning with minimum luminance variation dot... Vector half-toning with minimum luminance variation dot...

2011-07-12

2011-07-12

Haskins, Twyler L (Department: 2625)

Facsimile and static presentation processing

Static presentation processing

Attribute control

C358S003100, C358S003210, C358S003220, C358S001900

Reexamination Certificate

active

07978371

ABSTRACT:
What is disclosed is a system and method for improving vector halftoning in ink-jet printers capable of dot-on-dot printing. In one embodiment, n input Ci/Mi/Yichannel and a colorant Kiare received. If any of the Ci/Mi/Yiis greater than 100−Kithen that channel is clipped to 100−Ki. Next, a minimum total coverage area of a secondary color RGB dot required to achieve a remaining CMY coverage area is determined. If the minimum total coverage area is non-zero, then the following steps are performed. Each of a primary output Co/Mo/Yois determined. Each of the primary outputs is then scaled by a ratio of the remaining primary color area over the total remaining toner coverage. The results are sorted and secondary color RoBoGooutputs are determined from the sorted results.

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