Laser beam image contrast enhancement
US8629988B2 · kind B2 · utility
11Cited by
7References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 20, 2009 |
| Grant date | Jan 14, 2014 |
| Priority date | — |
| Expiry date | Jul 18, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S7/499
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus and method for providing image contrast enhancement is disclosed. A mobile object is equipped with a laser source, polarization filter, and imaging apparatus. The reflection of the laser source output passes through the filter and is received by the imaging apparatus. If the output of the laser source impinges a metallic marker plate located at a pre-determined location, the filter decreases the intensity level of image components not associated with the reflection of the laser source output. The imaging apparatus uses such filtered image components to determine the position and/or orientation of the mobile object.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.