Correcting registration errors in digital printing
US11630618B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 1, 2022 |
| Grant date | Apr 18, 2023 |
| Priority date | — |
| Expiry date | Mar 1, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30144
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for correcting an error in image printing, the method includes receiving a reference digital image (RDI). Based on a predefined selection criterion, one or more regions in the RDI that are suitable for use as anchor features for sensing the error, are automatically selected. A digital image (DI) acquired from a printed image of the RDI, is received and the one or more regions are automatically identified in the DI. Based on the anchor features of the DI, the error is automatically estimated in the printed image. A correction that, when applied to the DI, compensates for the estimated error, is calculated. The estimated error is corrected in a subsequent digital image (SDI) to be printed, and the SDI having the corrected error, is printed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.