System and method for optimising halftoning printer performance
US7477265B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 5, 2007 |
| Grant date | Jan 13, 2009 |
| Priority date | — |
| Expiry date | Feb 24, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T15/30
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An apparatus renders a plurality of graphical objects of an image on a scanline basis, with each scanline including at least one run of pixels, and each run of pixels being associated with at least one of the graphical objects such that the pixels of the run are within the edges of the at least one graphical object. The apparatus includes a decomposer for decomposing each of the graphical objects into at least one edge representing the corresponding graphical objects, a sorter for sorting one or more arrays containing the edges representing the graphical objects of the image, at least one of the arrays being sorted in an order from a highest priority graphical object to a lowest priority graphical object, and a determining device for, using the one or more arrays, determining edges of the graphical objects defining a run of pixels of at least one of the scanlines, graphical objects contributing to the run of pixels and edges of the contributing graphical objects. In addition, a generator generates the run of pixels by halftoning fill data within the edges of a highest priority contributing graphical object, if the highest priority graphical object contributing to the run of pixels …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.