Interpretation of colored documents
US6999616B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 9, 2001 |
| Grant date | Feb 14, 2006 |
| Priority date | — |
| Expiry date | Jul 2, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V30/10
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Automatic interpretation processing operations, such as character recognition, require a binary image of information-bearing image elements and a background. Digital image data produced by scanning a color-containing document frequently contain many different colors so that a division into information-bearing image elements and background is not evident. The invention divides connected components (contiguous pixels with the same color) in the digital image into background and other connected components, whereafter the other connected components are allocated, in accordance with a predetermined criterion, either to the background or to a foreground. The foreground connected components are combined into information elements suitable for the automatic interpretation processing. The division into information-bearing image elements and background can be preceded by a color quantisation processing of the digital image data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.