A method (20) is described for optically measuring the three-dimensional location of one or more wires W, in a group of wires W1-Wn, such a overhead power cables in an electric rail system. A first step (22) comprises obtaining stereoscopic image data for each of the wires W from the first and second spaced apart stereoscopic camera pairs 10a and 10b which lie in the common plane P1. At step (24), image data from the first and second stereoscopic camera pairs 10a and 10b is processed to identify each of the wires W in the region of interest (12). At step (26), a determination is made of the location in 3D space of selected identified wires W using image data from one of the cameras C1 or C2; and, C3 or C4 in each of the first and second camera pairs 10a and 10b.


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    Title :

    OPTICAL OVERHEAD WIRE MEASUREMENT


    Additional title:

    OPTISCHE FAHRLEITUNGSDRAHTMESSUNG
    MESURE OPTIQUE DE LIGNE AÉRIENNE


    Contributors:

    Publication date :

    2018-04-25


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    G01B MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS , Messen der Länge, der Dicke oder ähnlicher linearer Abmessungen / B60M Speiseleitungen oder Vorrichtungen am Gleis für elektrisch angetriebene Fahrzeuge , POWER SUPPLY LINES, OR DEVICES ALONG RAILS, FOR ELECTRICALLY-PROPELLED VEHICLES / G01C Messen von Entfernungen, Höhen, Neigungen oder Richtungen , MEASURING DISTANCES, LEVELS OR BEARINGS / G01S RADIO DIRECTION-FINDING , Funkpeilung / G06T Bilddatenverarbeitung oder Bilddatenerzeugung allgemein , IMAGE DATA PROCESSING OR GENERATION, IN GENERAL



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