Wireless methods and systems for three-dimensional non-contact shape sensing
US7256899B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 4, 2006 |
| Grant date | Aug 14, 2007 |
| Priority date | — |
| Expiry date | Oct 4, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N13/239
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Methods for acquiring an approximation of the surface geometry of a 3-dimensional object include projecting pattern of structured light on the object, moving the pattern with respect to the object, acquiring images of the intersection of the light on the object over time, determining local coordinates of points on the intersection with respect to the pattern, tracking the position of the pattern, transforming the local coordinates to object coordinates, and accumulating the points as a model of the surface of the object. The methods include a step for wirelessly and possibly compactly transmitting geometrical data which characterizes an intersection for a given position of the scanner with respect to the object. Systems for embodying the method include a self-powered wireless, non-contact optical scanner, the location and orientation of which may be tracked with respect to an object coordinate system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.