METHOD AND SYSTEM FOR COLOR FILM SEPARATION PREPROCESS USING ELECTRONIC OBJECT-BASED CHOKING AND SPREADING PROCEDURES INCLUDING OBJECT COMBINING OPERATIONS

METHOD AND SYSTEM FOR COLOR FILM SEPARATION PREPROCESS USING ELECTRONIC OBJECT-BASED CHOKING AND SPREADING PROCEDURES INCLUDING OBJECT COMBINING OPERATIONS

A computer system 100 for production of ink separations from an object-based print pre-process apparatus using a page description language. The print pre-process system facilitates creation of object spreads for any combination or configuration of objects on the rendered page. For each object on a r...

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Bibliographische Detailangaben
Hauptverfasser: CLEGG, DEREK, PASSARETTI, KEITH, SEYMOUR, AUDREY, BOENKE, MARKE, GITTELSOHN, MIKE
Format: Patent
Sprache:eng ; fre
Schlagworte:
CALCULATING
COMPUTING
COUNTING
IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
PHYSICS
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Zusammenfassung:A computer system 100 for production of ink separations from an object-based print pre-process apparatus using a page description language. The print pre-process system facilitates creation of object spreads for any combination or configuration of objects on the rendered page. For each object on a rendered page, the computer system 100 makes use of a spread table to determine spread incidences. For each spread incidence, the computer system generates set union, intersection and difference for spreading, receiving, and obstructing objects by use of a modified Weiler algorithm. The modified Weiler algorithm creates a simplified graph of contour histories providing a visible portion of the spread object. The visible object is strokable within a clipped window set to the receiving object. The stroke color and width, set by the spread table, can be knockout print or overprint. METHOD AND SYSTEM FOR COLOR FILM SEPARATION PREPROCESS USING ELECTRONIC OBJECT-BASED CHOKING AND SPREADING PROCEDURES INCLUDING OBJECT COMBINING OPERATIONS A computer system 100 for production of ink separations from an object-based print pre-process apparatus using a page description language. The print pre-process system facilitates creation of object spreads for any combination or configuration of objects on the rendered page. For each object on a rendered page, the computer system 100 makes use of a spread table to determine spread incidences. For each spread incidence, the computer system generates set union, intersection and difference for spreading, receiving, and obstructing objects by use of a modified Weiler algorithm. The modified Weiler algorithm creates a simplified graph of contour histories providing a visible portion of the spread object. The visible object is strokable within a clipped window set to the receiving object. The stroke color and width, set by the spread table, can be knockout print or overprint.