Position Identification Using Image Processing for UAV Flights in Martian Atmosphere
Shin-Ichiro Higashino*, Toru Teruya*, and Kazuhiko Yamada**
*Department of Aeronautics and Astronautics, Kyushu University
744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
**Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency
3-1-1 Yoshinodai, Chuo-ku, Sagamihara, Kanagawa 050-3540, Japan
This paper presents a method for the position identification of an unmanned aerial vehicle (UAV) in the Martian atmosphere in the future. It uses the image processing of craters captured via an onboard camera of the UAV and database images. The method is composed of two processes: individual crater detection using a cascade object detector and position identification using the recognition Taguchi (RT)-method. In crater detection, objects with shapes that resemble craters are detected regardless of their positions, and the positions of multiple detected craters are identified using the criterion variable D*, which is a normalized Mahalanobis distance. D* is calculated from several feature variables expressing the area ratios and relative positions of the detected craters in the RT-method.
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