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Indoor Precise Positioning Technology for Vehicles Using Floor Marks

플로어 마크를 이용한 차량용 실내 정밀 측위 기술

  • Received : 2015.06.29
  • Accepted : 2015.09.11
  • Published : 2015.10.31

Abstract

A variety of studies for indoor positioning are now being in progress due to the limit of GPS that becomes obsolete in the room. However, most of them are based on private wireless networks and the situation is difficult to commercialize them since they are expensive in terms of installation and maintenance costs, non-real-time, and not accurate. This paper applies the mark recognition algorithm used in existing augmented reality applications to the indoor vehicle positioning application. It installs floor marks on the ground, performs the perspective transformation on it and decodes the internal data of the mark and, as a result, it obtains an absolute coordinate. Through the geometric analysis, it obtains current position (relative coordinates) of a vehicle away from the mark and the heading direction of the vehicle. The experiment results show that when installing the marks every 5 meter, an error under about 30 cm occurred. In addition, it is also shown that the mark recognition rate is 43.2% of 20 frames per second at the vehicle speed of 20km/h. Thus, it is thought that this idea is commercially valuable.

Keywords

ITS;floor mark;image processing;indoor positioning;augmented reality

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Acknowledgement

Grant : 스마트교통특화전문인력양성사업단