交差点鳥瞰映像の協調撮影と共有を目的とした車車間通信プロトコル  [in Japanese] Inter-vehicle Protocol for Cooperatively Capturing and Sharing Bird-eye Intersection Video  [in Japanese]

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Abstract

近年多発している交差点内における事故を防止するためには,死角に存在する車両の位置をドライバに把握させることが有用である.本研究では,ドライバに交差点の状況を効果的に把握させるために,交差点内の車両が撮影した映像を車車間通信で交換し,それぞれの車両で交差点鳥瞰映像を合成してリアルタイムで提示することを考える.本論文では,交差点の複数車両の中から合成元となる映像を送信する車両を選定する手法を提案する.提案手法では,高品質な鳥瞰映像を利用可能な無線帯域幅内で作成できるようにするため,あらかじめ交換した車両の位置や向きなどの情報をもとに,各車両の映像を送信する優先度を計算し,送信車両を選定する.提案手法の評価を行うため,ネットワークシミュレータQualNetで実際の交差点環境を再現し,シミュレーション実験を行った.実験結果から,提案手法は車間距離が10,[m]以内であるような比較的高い車両密度で,通信機器を60%以上の車両が搭載している環境で,要求に応じた高品質な映像を送信できていることを確認した.For accident prevention in intersections which are occurring frequently in recent years, it is useful for drivers to grasp the position of vehicles in blind spots. In order to allow a driver to grasp the situation of an intersection intuitively, we consider an application where each vehicle in an intersection exchanges captured video with each other through inter-vehicle communication and these vehicles generate and display live bird's eye view video of the intersection. In this paper, we propose a method to select particular vehicles among all vehicles in intersection which send a video. In our method, in order to compose a high-quality video within available wireless bandwidth, each vehicle calculates priority of all vehicles for sending videos based on their position and direction, and selects some of the vehicles with high priority. For evaluation of the proposed method, we conducted simulation experiments by imitating an actual intersection with QualNet simulator. As simulation results, we confirmed that vehicles selected by our method can send high quality video capturing request areas in high density (the distance between vehicles is 10,[m] or less) environment with 60% or more carrying rate.

For accident prevention in intersections which are occurring frequently in recent years, it is useful for drivers to grasp the position of vehicles in blind spots. In order to allow a driver to grasp the situation of an intersection intuitively, we consider an application where each vehicle in an intersection exchanges captured video with each other through inter-vehicle communication and these vehicles generate and display live bird's eye view video of the intersection. In this paper, we propose a method to select particular vehicles among all vehicles in intersection which send a video. In our method, in order to compose a high-quality video within available wireless bandwidth, each vehicle calculates priority of all vehicles for sending videos based on their position and direction, and selects some of the vehicles with high priority. For evaluation of the proposed method, we conducted simulation experiments by imitating an actual intersection with QualNet simulator. As simulation results, we confirmed that vehicles selected by our method can send high quality video capturing request areas in high density (the distance between vehicles is 10,[m] or less) environment with 60% or more carrying rate.

Journal

  • 情報処理学会論文誌

    情報処理学会論文誌 52(6), 1980-1992, 2011-06-15

    一般社団法人情報処理学会

Keywords

Codes

  • NII Article ID (NAID)
    110008508027
  • NII NACSIS-CAT ID (NCID)
    AN00116647
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    1882-7764
  • Data Source
    NII-ELS  IR  IPSJ 
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