Writing surface boundary markers for computer vision
US12380531B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 29, 2024 |
| Grant date | Aug 5, 2025 |
| Priority date | — |
| Expiry date | Jan 29, 2044 |
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 boundary markers. The boundary markers are configured to be positioned on a writing surface. The system also includes a tangible non-transitory computer readable medium encoded with instructions which, when run on a camera-equipped computing device, causes the camera-equipped computing device to execute processes. The processes include capturing an image of the writing surface with the markers thereon. The processes also include detecting the boundary markers in the captured image. Additionally, the processes include identifying a virtual boundary in the captured image based on the positions of the boundary markers. The processes then unwarp a portion of the captured image within the virtual boundary to produce an unwarped image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.