System for registering component image tiles in a camera-based scanner device transcribing scene images
US5581637A · kind A · utility
132Cited by
10References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 16, 1996 |
| Grant date | Dec 3, 1996 |
| Priority date | — |
| Expiry date | Apr 16, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V10/245
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A device for registering component image tiles in a scanning system for transcribing, into electronic form, markings on a two-dimensional surface such as a whiteboard. A registration light pattern is projected onto the surface to be imaged. The pattern projected can be chosen to best suite the specific properties of the camera and imaging environment. The pattern markings are processed using perspective transformations to determine the overlap properties of the image tiles and distortion of each tile image, and the resulting data is used to combine the tiles to produce an undistorted composite image of the whiteboard.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.