Object-based raster trapping
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United States of America Patent
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Apr 15, 2008
Grant Date -
Jan 20, 2005
app pub date -
Jun 4, 2004
filing date -
Jun 6, 2003
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Trapping graphics during pre-press workflow involves intensive computation. In this invention, the trapping engine uses simple bounding boxes, colors, and temporal order information, to eliminate the possibility of trapping many pairs of objects without ever having to calculate their exact shapes. By considering the temporal order of the objects in a page, such a z-order display list, the trapping engine can quickly reject the possibility of trapping in areas where it is not necessary.
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Cited Art Landscape
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