Method for smooth trapping suppression of small graphical...

Details Method for smooth trapping suppression of small graphical... Method for smooth trapping suppression of small graphical...

2008-06-24

2008-06-24

Zimmerman, Mark (Department: 2625)

Facsimile and static presentation processing

Static presentation processing

Attribute control

C358S518000, C358S003270, C345S589000, C345S619000, C382S162000, C382S167000

Reexamination Certificate

active

07391536

ABSTRACT:
A method for smooth trapping of a small graphical object, includes receiving from a trap generator the location of a trap pixel in a small object that should be changed in color; determining the width of the small object containing the trap pixel; comparing the width of the thin object with a trap threshold width; if the width of the thin object is less than the trap threshold width, adjusting the hue of the trap pixel according to a predetermined relationship; and applying a trap correction to the trap pixel according to the adjusted trap hue. The predetermined relationship may be a linear relationship that interpolates the trap hue monotonically (from the original trap hue to the original object hue) for object widths less than the trap threshold width. The method may be applied to small objects and small font text objects.

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