PROBLEM TO BE SOLVED: To provide a camera posture detection device capable of detecting the attitude angle of a camera without having an inclination angle detection sensor.SOLUTION: The camera posture detection device comprises a monitoring camera 32 at the tip of a boom and a monitor 70 for displaying the captured image of a hook suspended from the tip of the boom, and further an attitude angle arithmetic device 68 for calculating the attitude angle of the camera on the basis of hook image position information on screen that is displayed on the monitor 70 and hook position information in the real space. The attitude angle arithmetic device 68 is provided with a hook position arithmetic unit 63 for calculating the hook position on the actually displayed screen of the monitor 70, a deviation amount arithmetic unit 64 for calculating a difference between the hook position calculated by the hook position arithmetic unit 63 and the reference hook position of the hook on the screen of the monitor 70 when the camera is assumed to have been directed right below, and a camera inclination angle arithmetic unit 65 for calculating the inclination angle of the monitoring camera 32 on the basis of the difference and the distance in the height direction from the optical axis center position of the monitoring camera 32 to the hook.

    【課題】傾斜角検出センサを設けなくても、カメラの姿勢角を検出することのできるカメラ姿勢検出装置を提供する。【解決手段】ブームの先端部の監視カメラ32と、ブームの先端部から吊るされたフックを撮像した画像を表示するモニタ70とを備え、モニタ70に表示されている画面上のフック画像位置情報と、実空間におけるフック位置情報とに基づいてカメラの姿勢角を求める姿勢角演算装置68を設け、姿勢角演算装置68は、実際に表示されているモニタ70の画面上のフック位置を求めるフック位置演算部63と、フック位置演算部63が求めたフック位置と、カメラが真下に向けられたと仮定した場合にそのモニタ70に表示される画面上のフックの基準フック位置との差を求めるずれ量演算部64と、その差と監視カメラ32の光軸中心位置からフックまでの高さ方向の距離とに基づいて監視カメラ32の傾斜角を求めるカメラ傾斜角演算部65とを有する。【選択図】図2


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    Title :

    CAMERA POSTURE DETECTION DEVICE


    Additional title:

    カメラ姿勢検出装置


    Contributors:

    Publication date :

    2015-12-07


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    G01B MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS , Messen der Länge, der Dicke oder ähnlicher linearer Abmessungen / B66C Krane , CRANES



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