Journal of Korea Game Society (한국게임학회 논문지)

Korea Game Society (한국게임학회)
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Improvement of Plane Tracking Accuracy in AR Game Using Magnetic Field Sensor

자기장 센서를 사용한 AR 게임에서의 평면 추적 정확도 개선

  • Lee, Won-Jun (Dept. of Computer Science and Engineering, Incheon National University) ;
  • Park, Jong-Seung (Dept. of Computer Science and Engineering, Incheon National University)
  • 이원준 (인천대학교 컴퓨터공학부) ;
  • 박종승 (인천대학교 컴퓨터공학부)
  • Received : 2019.07.10
  • Accepted : 2019.10.20
  • Published : 2019.10.31
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Abstract

In this paper, we propose an improved method of plane tracking in developing AR games for smartphones using magnetic field sensor. The previous method based on ARCore is a VIO method using a mixture of SLAM and IMU of smartphones. The disadvantages of accelerometers and gyroscopes in IMUs cause errors in tracking the plane. We propose an improved method of planar tracking by adding the magnetic field sensor as well as the existing IMU sensors. Experimental results shows that our method reduces the error of the smartphone posture estimation.

본 논문에서는 ARCore를 사용한 비전 기반 스마트폰용 AR 게임 개발을 하는데 있어 평면 추적의 정확도 개선 방법을 제안한다. ARCore에서는 SLAM과 스마트폰의 IMU를 혼합하여 사용하는 VIO 방식이다. IMU를 사용하는데 있어 가속도계와 자이로스코프의 단점으로 인해 한번 인식된 평면을 계속하여 추적하는데 있어 오차가 발생한다. 이를 위해 기존 센서뿐만 아니라 자기장계 센서를 추가하여 자세 측정의 오차를 최소화하고 이를 평면 추적에도 활용될 수 있도록 하는 방법을 제안한다. 제안 방법을 통해 평면 추적에 있어서 ARCore의 경우보다 스마트폰 자세 추정의 오차를 줄일 수 있는 것을 확인하였다.

Keywords

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