Abstract
This article presents a vision-based method for mobile robot localization in partially known environments. Simple, unobtrusive artificial landmarks are used as external localization aids. The landmarks are labelled with unique code patterns, what enables unambiguous global localization. The analysis is presented which enables prediction of the uncertainty of the position and orientation of the robot relative to the landmark. Experimental evidence is provided, demonstrating that the proposed method can be reliably used over a wide range of relative positions between the camera and the landmark.
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