To enable navigation in places where it is difficult to receive signals from positioning satellites.SOLUTION: A portable terminal equipped with an imaging device acquires an imaged video having been imaged by the imaging device, specifies the reference bearing and position of the imaging device at navigation start time on the basis of the imaged video in which an installed object having been installed at a prescribed position is imaged, specifies a route from the position of the installed object to a destination, detects the bearing change amount and movement amount of the imaging device on the basis of the movement of a feature point with the passage of time extracted from the imaged video, specifies the current bearing and position of the imaging device on the basis of bearing change amount and movement amount of the imaging device detected by a motion detection unit after having specified the reference bearing and position of the imaging device, generates a navigation image that indicates a route on the basis of the specified current bearing and position of the imaging device, and displays the generated navigation image by superimposition on the current imaged video.SELECTED DRAWING: Figure 2

    【課題】測位衛星からの信号の受信が困難な場所でのナビゲーションを可能とする。【解決手段】撮像装置を備える携帯端末は、撮像装置に撮像された撮像映像を取得し、所定の位置に設置された設置物が撮像された撮像映像に基づいて、ナビゲーション開始時における撮像装置の基準の方位及び位置を特定し、設置物の位置から目的地までのルートを特定し、撮像映像から抽出した特徴点の時間経過に伴う動きに基づいて、撮像装置の方位変化量及び移動量を検出し、撮像装置の基準の方位及び位置を特定した後に動き検出部によって検出された撮像装置の方位変化量及び移動量に基づいて、撮像装置の現在の方位及び位置を特定し、特定された撮像装置の現在の方位及び位置に基づいてルートを示すナビゲーション画像を生成し、生成したナビゲーション画像を現在の撮像映像に重畳して表示する。【選択図】図2


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    Title :

    PORTABLE TERMINAL, NAVIGATION METHOD, AND COMPUTER PROGRAM


    Additional title:

    携帯端末、ナビゲーション方法、及び、コンピュータプログラム


    Contributors:

    Publication date :

    2021-09-24


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    G01C Messen von Entfernungen, Höhen, Neigungen oder Richtungen , MEASURING DISTANCES, LEVELS OR BEARINGS / G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS / G09B Unterrichts- oder Vorführungsgeräte , EDUCATIONAL OR DEMONSTRATION APPLIANCES



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