Object-based raster trapping

Image analysis – Applications – Target tracking or detecting

Reexamination Certificate

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Details

C382S167000, C358S518000

Reexamination Certificate

active

07359530

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.

REFERENCES:
patent: 6031544 (2000-02-01), Yhann
patent: 6239829 (2001-05-01), Curry
patent: 6327043 (2001-12-01), Rumph et al.
patent: 7009735 (2006-03-01), Ebner
patent: 7046403 (2006-05-01), Yhann
patent: 7088469 (2006-08-01), Sanger et al.
patent: 7116821 (2006-10-01), Lane et al.
patent: 7123381 (2006-10-01), Klassen
patent: 7196816 (2007-03-01), Watanabe
PostScript Language Reference Manual, Adobe Systems Incorporated—3rdEdition, Feb. 1999, 6.3 In-RIP Trapping, pp. 439-454.
“PostScript Language Reference Manual”, Adobe Systems Incorporated—3rdEdition, Feb. 1999, §6.3 In-RIP Trapping, pp. 439-454.

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