Unmanned Aerial Vehicle Localization Based on Monocular Vision and Online Mosaicking

Authors:
Fernando Caballero;Luis Merino;Joaquín Ferruz;Aníbal Ollero
Affiliations:
Robotics, Vision and Control Group, University of Seville, Sevilla, Spain 41092;Pablo de Olavide University, Sevilla, Spain 41013;Robotics, Vision and Control Group, University of Seville, Sevilla, Spain 41092;Robotics, Vision and Control Group, University of Seville, Sevilla, Spain 41092 and Centro Avanzado de Tecnologías Aeroespaciales, Aéropolis, La Rinconada, Sevilla, Spain 41309
Venue:
Journal of Intelligent and Robotic Systems
Year:
2009

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Abstract

This paper presents a new approach for vision-based UAV localization, using mosaics as environment representations. Inter-image motions are used to estimate the motion of the UAV. Online mosaicking is applied to reduce the impact of the accumulative errors in UAV position estimation. A new method to build an stochastic mosaic given the image-to-image homographies is detailed. The mosaic consists of a network of inter-image relations, and is used to create a consistent view of the environment of the UAV and hence, to detect the drift in position estimation by using the mosaic as a resource. The technique could be called simultaneous localization and mosaicking. This technique is specially suitable for monitoring and surveillance tasks in which the UAV will repeatedly cover the same area. The paper also shows experimental results with real UAVs where the benefits of the proposed method are evident.