Journal of Digital Convergence (디지털융복합연구)

The Society of Digital Policy and Management (한국디지털정책학회)
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An User-Friendly Method of Image Warping for Traffic Monitoring System

실시간 교통상황 모니터링 시스템을 위한 유저 친화적인 영상 변형 방법

  • Yi, Chuho (ADAS Business Department, LG Electronics) ;
  • Cho, Jungwon (Department of Computer Education, Jeju National University)
  • Received : 2016.11.02
  • Accepted : 2016.12.20
  • Published : 2016.12.28
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Abstract

Currently, a traffic monitoring service using a surveillance camera is provided through internet. In general, if the user points a certain location on a map, then this service shows the real-time image of the camera where it is mounted. In this paper, we proposed the intuitive surveillance monitoring system which displays a real-time camera image on the map by warping with bird's-eye view and with the top of image as the north. In order to robustly estimate the road plane using camera image, we used the motion vectors which can be detected to changes in brightness. We applied a re-adjustment process to have the same directivity with a map and presented a user-friendly interface that can be displayed on the map. In the experiment, the proposed method was presented as the result of warping image that the user can easily perceive like a map.

현재 인터넷으로 감시 카메라를 이용하여 교통량을 보여주는 서비스가 제공되고 있으나, 일반적으로 사용자가 지도 위의 일정 위치를 지정하면 카메라가 장착되어 있는 기준으로 영상을 보여준다. 본 논문에서는 상단이 북쪽으로 표시되는 일반적인 지도에 현재 카메라에서 촬영되고 있는 도로의 영상을 지도 기준으로 위에서 바라보는 시점(Bird's-eye view)으로 변형(Warping)하여 보여줌으로써 사용자가 직관적으로 현재의 도로 상황을 한눈에 볼 수 있는 시스템을 제안하였다. 본 논문에서는 카메라 영상에서 보여주고 있는 도로 평면을 강인하게 추정하기 위해 밝기 변화에 강인할 수 있는 움직임 벡터를 이용하여 도로 평면을 추정하는 방법을 제안하며, 지도와 같은 방향성을 가질 수 있도록 재조정하는 과정을 적용하고 지도 위에 표시할 수 있는 사용자 친화적인 인터페이스를 제시하였다. 실험결과를 통해 본 논문에서 제안하는 방법이 지도와 같이 사용자가 인지하기 편리한 영상으로 변형되는 결과를 확인하였다.

Keywords

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