POSITION DETECTION SYSTEM, POSITION DETECTION APPARATUS, POSITION DETECTION METHOD, AND PROGRAM

To provide a position detection apparatus capable of detecting a position of a predetermined part of an observer located around a screen with a single camera.SOLUTION: A position detection apparatus includes a screen 10 disposed at a predetermined height, a 360-degree camera 20 separately disposed above the screen 10, a mirror 30 that is disposed above the 360-degree camera 20 and reflects the screen 10, an image recognition unit 40 that converts an observer Va located around the screen 10 taken by the 360-degree camera 20 and a virtual image Vb of the observer Va reflected in the mirror 30 into a regular-distance cylindrical view, recognizes predetermined parts of each of the observer Va and the virtual image Vb, and calculates angles at which the predetermined parts can be seen from the 360-degree camera 20, and a positional coordinate calculation unit 50 that calculates a positional coordinate of the predetermined part of the observer Va based on the two angles and a coordinate of the 360-degree camera 20.SELECTED DRAWING: Figure 1 【課題】1台のカメラでスクリーンの周囲に位置する観察者の所定部位の位置を検出できる位置検出装置を提供する。【解決手段】所定の高さに配置されたスクリーン１０と、スクリーン１０の上方に離れて配置された360度カメラ２０と、360度カメラ２０の上方に配置され、スクリーン１０を映す鏡３０と、360度カメラ２０で撮影されたスクリーン１０の周囲に位置する観察者Ｖａと鏡３０に映った観察者Ｖａの虚像Ｖｂをそれぞれ正距円筒図に変換し、観察者Ｖａと虚像Ｖｂのそれぞれの所定部位を認識し、360度カメラ２０から所定部位が見える角度を算出する画像認識部４０と、2つの角度と360度カメラ２０の座標に基づいて、観察者Ｖａの所定部位の位置座標を計算する位置座標計算部５０とを備える。【選択図】図１