Lifting ink annotations from paper
US7526129B2 · kind B2 · utility
8Cited by
38References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 23, 2005 |
| Grant date | Apr 28, 2009 |
| Priority date | — |
| Expiry date | Feb 4, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V30/40
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A computer-implemented system for obtaining ink annotations from paper comprises a comparator that compares an initial electronic version of a document with an electronic image of an annotated version of the document to identify a handwritten annotation. The system also includes an annotation lifter that extracts the handwritten annotation from the electronic image and converts the handwritten annotation into a computer-usable form. Methods for using the system are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.