Writing surface boundary markers for computer vision
US11295410B2 · kind B2 · utility
2Cited by
64References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 10, 2020 |
| Grant date | Apr 5, 2022 |
| Priority date | — |
| Expiry date | May 14, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30204
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system for capturing, organizing, and storing handwritten notes includes a plurality of fluorescently colored boundary markers. The boundary markers are configured to be positioned on a writing surface. An image of the writing surface with the fluorescent markers thereon is captured and the fluorescent colored boundary markers in the captured image are detected. A virtual boundary in the captured image is identified based on the positions of the fluorescent colored boundary markers. A portion of the captured image within the virtual boundary is unwarped to produce an unwarped image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.