System and method for reducing visibility of registration errors in an image to be printed using a digital color printer by convolution with a laplacian kernel
US8199359B2 · kind B2 · utility
3Cited by
4References
10Claims
0Family size
Assignee
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Key dates
| Filing date | Apr 24, 2007 |
| Grant date | Jun 12, 2012 |
| Priority date | — |
| Expiry date | Sep 20, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/58
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system and method for trapping in electrophotographic color printing and related technologies for printing or display in which the final image is an overlay of multiple components subject to alignment errors. Trapping is based on the cyan (C), magenta (M), and black (K) planes. There are four steps as follows: detect object edges on each of the four color planes; detect coincident and opposing edge transitions on each pair of planes (CM, CK, and KM); determine which plane to trap, i.e., to extend object across edge; and generate trap on that plane using a simple trap generation rule and a single trap generation rule.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.