To cause a person to recognize a remaining time of a current display from a remote location without being recognized by a human eye, by using only light showing the current display of a signalling device.SOLUTION: An acquisition unit 111 acquires a moving image captured at a predetermined frame rate from an imaging unit 17. The recognition unit 112 extracts a portion where brightness fluctuates, i.e., a flicker, from the moving image acquired by the acquisition unit 111 and specifies its period. Next, the recognition unit 112 analyzes two or more periods of flicker and detects a change in phases of the flickers. Then, the recognition unit 112 recognizes a remaining time of the current display of the signalling device 2 based on this phase change.SELECTED DRAWING: Figure 4

    【課題】信号機の現示を示す光のみを用いて人の目に認識されずに、遠隔からその現示の残り時間を認識させる。【解決手段】取得部111は、撮影部17から所定のフレームレートで撮影された動画を取得する。認識部112は、取得部111が取得した動画から明るさが変動している部分、すなわちフリッカを抽出し、その周期を特定する。次に認識部112は、2周期以上のフリッカを分析して、このフリッカの位相の変化を検知する。そして、認識部112は、この位相の切り替わりに基づいて、信号機2の現示の残り時間を認識する。【選択図】図4


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    Title :

    SIGNALLING DEVICE, RECOGNITION DEVICE, SIGNALLING SYSTEM, AND PROGRAM


    Additional title:

    信号機、認識装置、信号システム、及びプログラム


    Contributors:

    Publication date :

    2024-05-28


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS / B61L Leiten des Eisenbahnverkehrs , GUIDING RAILWAY TRAFFIC



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