A Model of Saliency-Based Visual Attention for Rapid Scene Analysis
IEEE Transactions on Pattern Analysis and Machine Intelligence
Vision for Mobile Robot Navigation: A Survey
IEEE Transactions on Pattern Analysis and Machine Intelligence
Detection of Natural Landmarks through Multiscale Opponent Features
ICPR '00 Proceedings of the International Conference on Pattern Recognition - Volume 3
A Multiagent Approach to Qualitative Landmark-Based Navigation
Autonomous Robots
Distinctive Image Features from Scale-Invariant Keypoints
International Journal of Computer Vision
Landmark Selection for Vision-Based Navigation
IEEE Transactions on Robotics
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The main difficulty to attain fully autonomous robot navigation outdoors is the fast detection of reliable visual references, and their subsequent characterization as landmarks for immediate and unambiguous recognition. Aimed at speed, our strategy has been to track salient regions along image streams by just performing on-line pixel sampling. Persistent regions are considered good candidates for landmarks, which are then characterized by a set of subregions with given color and normalized shape. They are stored in a database for posterior recognition during the navigation process. Some experimental results showing landmark-based navigation of the legged robot Lauron III in an outdoor setting are provided.