4779203 Visual navigation system for mobile robots

1989 ◽  
Vol 5 (4) ◽  
pp. iii
Author(s):  
Virge W McClure ◽  
Donald J Christian
Keyword(s):  
Mobile Robots ◽  
Navigation System ◽  
Visual Navigation

TIME-TO-CONTACT INFORMATION ESTIMATION FOR MONOCULAR MOBILE ROBOTS

2008 ◽  
Vol 05 (03) ◽  
pp. 223-233 ◽  
Author(s):  
RONG LIU ◽  
MAX Q. H. MENG
Keyword(s):  
Mobile Robots ◽  
Optical Flow ◽  
Active Contour Model ◽  
Visual Navigation ◽  
Moving Object ◽  
Time To Contact ◽  
Temporal Derivative ◽  
Novel Method ◽  
Derivatives Of ◽  
Flow Experiments

Time-to-contact (TTC) provides vital information for obstacle avoidance and for the visual navigation of a robot. In this paper, we present a novel method to estimate the TTC information of a moving object for monocular mobile robots. In specific, the contour of the moving object is extracted first using an active contour model; then the height of the motion contour and its temporal derivative are evaluated to generate the desired TTC estimates. Compared with conventional techniques employing the first-order derivatives of optical flow, the proposed estimator is less prone to errors of optical flow. Experiments using real-world images are conducted and the results demonstrate that the developed method can successfully achieve TTC with an average relative error (ARVE) of 0.039 with a single calibrated camera.

Model-Based Visual Navigation System For A Mobile Robot

1989 ◽  
Author(s):  
Juha Roning ◽  
Matti Pietikainen ◽  
Mikko Lindholm ◽  
Tapio Taipale
Keyword(s):  
Mobile Robot ◽  
Navigation System ◽  
Visual Navigation ◽  
Model Based

scholarly journals A simple visual navigation system for an UAV

2012 ◽  
Author(s):  
Tomas Krajnik ◽  
Matias Nitsche ◽  
Sol Pedre ◽  
Libor Preucil ◽  
Marta E. Mejail
Keyword(s):  
Navigation System ◽  
Visual Navigation
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