To provide a road feature determination apparatus for specifying a road end as a boundary thereof with a footpath and specifying a road center and a lane center.SOLUTION: Structure lower end point extraction means 6 detects, in a cross-section, a surface point at a position moving from a vertex of a structure at the end in a horizontal direction by a prescribed distance that is shorter than a minimum footpath width. The structure lower end point extraction means sets a straight line formed by connecting the detected surface point and the vertex and, further, extracts a surface point, the perpendicular of which to the straight line is a longest, as a structure lower end point. Road end point extraction means 8 determines an average point of surface points within a prescribed distance range from the structure lower end point and sets a straight line formed by connecting the average point and a travel point. Further, the road end point extraction means extracts a surface point, the perpendicular of which to the straight line is a longest, as a road end point. In this way, a road end point is extracted in each cross-section.SELECTED DRAWING: Figure 1

    【課題】歩道との境である道路端部を特定したり、道路中心、車線中心などを特定する道路特徴決定装置を提供する。【解決手段】構造物下部端点抽出手段6は、横断面において、端部の構造物の頂点から水平方向に最小歩道幅より短い所定距離移動した位置における表面点を見いだす。見いだした表面点と、前記頂点との間を結ぶ直線を設定する。さらに、当該直線に対する垂線が最も長い表面点を構造物下部端点として抽出する。道路端部点抽出手段8は、構造物下部端点から所定距離の範囲の表面点の平均点を決定し、当該平均点と前記走行点との間を結ぶ直線を設定する。さらに、当該直線に対する垂線が最も長い表面点を道路端部点として抽出する。このようにして、各横断面において、道路端部点が抽出される。【選択図】図1


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    Title :

    ROAD FEATURE DETERMINATION APPARATUS


    Additional title:

    道路特徴決定装置


    Contributors:

    Publication date :

    2021-03-18


    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 / G01B MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS , Messen der Länge, der Dicke oder ähnlicher linearer Abmessungen



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