Abstract
A method of ascertaining navigational information comprises illuminating a region of a surface incorporating one or more luminescent markers. Emission from the luminescent markers in response to the illumination is detected and processed to ascertain navigational information associated with the processed emission.
| Original language | English |
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| Patent number | US2006/0118738A1 |
| IPC | G06K 11/00,G06K 5/00 |
| Filing date | 2/11/05 |
| Publication status | Published - 8 Jun 2006 |
| Externally published | Yes |