Video safety detector with projected pattern
US7167575B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 29, 2000 |
| Grant date | Jan 23, 2007 |
| Priority date | — |
| Expiry date | Apr 29, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B13/1961
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A two-dimensional (2-D) machine-vision safety-solution involving a method and apparatus for performing high-integrity, high efficiency machine vision. A known structured lighting texture pattern is projected upon a target area. A model image of the pattern on an empty target field is stored during an initial training step. The machine vision safety solution digitally interprets a camera image of the light reflected by the objects in the target area to detect and characterize a pattern in the image. The pattern characterization is then processed to determine if a distortion of the characterization factors is larger than a predetermined threshold, and results in an alarm condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.