Method for smooth trap suppression of small graphical objects
US7146043B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 10, 2003 |
| Grant date | Dec 5, 2006 |
| Priority date | — |
| Expiry date | Jul 29, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T5/20
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for smooth trapping of thin graphical objects, wherein a thin graphical object has a width dimension which is substantially less than the object's length dimension, includes receiving from a trap generator the location of a trap pixel that should be changed in color; determining the width of the object containing the trap pixel; comparing the width of the object with a trap threshold width; if the size of the object is less than the trap threshold width, reducing the width of the trap region according to a predetermined relationship; and applying a trap correction to the trap pixel according to the reduced trap width. The predetermined relationship may be a linear relationship which reduces the trap width monotonically for object widths less than the trap threshold width. The method may be applied to small objects and small font text objects.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.