Mobile robot navigation employing retroreflective ceiling features
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United States of America Patent
Stats
-
Sep 24, 1991
Grant Date -
N/A
app pub date -
Jun 7, 1989
filing date -
Jun 7, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Apparatus and method which provides for the determination of a vehicle's orientation and position in an environment, such as a hallway, from an image of a retroreflective ceiling feature. A mobile robot 10 includes a light source 28 and a camera 12 that are pitched up obliquely at an intermediate angle between a horizon and a zenith. The camera views a ceiling having one or more strip-like retroreflective features 16 which are preferably aligned with an axis of the hallway. In that the feature presents a pattern or alignment which is substantially parallel to a long axis of the hallway the pattern is detected and processed to derive robot navigation information therefrom.
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Family
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Cited Art Landscape
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