Method and system for controlling printer text/line art and halftone independently
US7602529B2 · kind B2 · utility
8Cited by
7References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 7, 2004 |
| Grant date | Oct 13, 2009 |
| Priority date | — |
| Expiry date | Dec 22, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/4072
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of altering the appearance of an input digital image when printed, the digital image comprised of an array of pixels and wherein each pixel is assigned a digital value representing marking information, and wherein the pixels comprise Text/Line pixels and halftone pixels, the method comprising the steps of changing the value of halftone pixels using a custom tone transfer function that anticipates the effect of the reassigned pixel values on halftone appearance; rasterizing the digital image; reassigning the digital values of all pixels; and, printing the image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.