Method and apparatus for document digitization
US8902481B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 7, 2013 |
| Grant date | Dec 2, 2014 |
| Priority date | — |
| Expiry date | Oct 7, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/00761
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a method for document digitization, an apparatus generates a first image of a document sheet by irradiating the document sheet using a first light source and detecting the document sheet irradiated with light from the first light source, which enables detection of ink on the document sheet that defines a marked portion. The apparatus further generates a second image of the document sheet by irradiating the document sheet using a second light source and detecting the document sheet irradiated with light from the second light source, which enables detection of content on the document sheet. The apparatus further obtains a region of the second image that corresponds to the marked portion of the document sheet based on the first image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.