Patent
1994-01-26
1996-07-30
Zimmerman, Mark K.
395134, G06T 1140
Patent
active
055420524
ABSTRACT:
A trapping technique that accepts a Postscript or other page description language (PDL) file and outputs a file in PDL format having the correct traps. The input page is first divided into subportions, or tiles, and the tiles are individually processed by evaluating the input file in a corresponding dipping window. Each tile is then analyzed to determine the presence of boundaries or intersections between page objects or color regions. A trapping analyzer generates trap vectors in accordance with a set of desired trapping rules which take into account existing traps and the proximity of other page objects. In a preferred embodiment, the trap vectors are then convened to PDL form.
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Bean Eric J.
Bjorge Per H.
Blannin Alan
Deutsch Keith R.
Peltonen Douglas L.
Adobe Systems Incorporated
Vo Cliff N.
Zimmerman Mark K.
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