Framing aid for a document capture device
US7023483B2 · kind B2 · utility
6Cited by
22References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 28, 2000 |
| Grant date | Apr 4, 2006 |
| Priority date | — |
| Expiry date | Sep 4, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/0452
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A framing aid for a handheld document capture device such as a digital camera, comprising two pattern generators (10,20) generating convergent patterns (14, 24) that are in register on a target object plane. Triangulation between the two pattern generators (10,20) and using superimposed or complementary patterns (14,24) ensures that the hand held device (1) is correctly arranged at a predetermined range and orientation above a document to be captured, such that the document is accurately framed within the field of view of the capture device (1).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.