Three dimensional vision device and method, and structured light bar-code patterns for use in the same
US7140544B2 · kind B2 · utility
3Cited by
23References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 5, 2003 |
| Grant date | Nov 28, 2006 |
| Priority date | — |
| Expiry date | Dec 9, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K19/06028
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention is a system and method for three dimensional machine vision including a projector and camera. The projector casts a structured light Quadratic Residue Bar Code on the surface to be mapped. The camera then images the surface. The projected image is shifted, and the process is repeated a number of times, according to the particular arrangement selected for the structured light Quadratic Residue Bar Code. The image data collected from this series of images is then processed by relatively simple matrix operations to determine the location of each camera pixel in three dimensional space.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.