Localization system and method of mobile robot based on camera and landmarks
US7634336B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 23, 2006 |
| Grant date | Dec 15, 2009 |
| Priority date | — |
| Expiry date | Feb 10, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D1/0274
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A localization system and method of a mobile robot using a camera and artificial landmarks in a home and a general office environment (or working zone) is provided. The localization system includes artificial landmarks having an LED flash function in an invisible wavelength band, a camera with a wide-angle lens, a module flashing landmarks attached at the ceiling and identifying positions and IDs of the landmarks from an image photographed by the camera having a filter, a module calculating position and orientation of the robot using two landmarks of the image in a stop state, a module, when a ceiling to which the landmarks are attached has different heights, a position of the robot, and a module, when a new landmark is attached in the working zone, calculating a position of the new landmark on an absolute coordinate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.