[Problem] To provide a camera inspection system that can automatically and easily determine the necessity of calibration of a camera mounted on a railway vehicle.[Solution] A camera inspection system according to the present embodiment includes an image capturing portion that is mounted on a railway vehicle and captures images of a sign provided around a railway track on which the railway vehicle drives at first and second viewpoints. An arithmetic processor obtains a disparity between a first image of the sign at the first viewpoint and a second image of the sign at the second viewpoint. The arithmetic processor calculates a first distance between the railway vehicle and the sign based on the disparity between the first image and the second image. The arithmetic processor calculates a second distance between the railway vehicle and the sign based on known attribute information related to the size and/or the position of the sign and the length of the attribute information on the first or second image. The arithmetic processor determines whether a difference between the first distance and the second distance is larger than a threshold. A memory stores therein the attribute information.


    Access

    Download


    Export, share and cite



    Title :

    AUTOMATIC CAMERA INSPECTION SYSTEM


    Additional title:

    AUTOMATISCHES KAMERAINSPEKTIONSSYSTEM
    SYSTÈME D'INSPECTION DE CAMÉRA AUTOMATIQUE


    Contributors:

    Publication date :

    2024-01-03


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B61L Leiten des Eisenbahnverkehrs , GUIDING RAILWAY TRAFFIC / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / G06T Bilddatenverarbeitung oder Bilddatenerzeugung allgemein , IMAGE DATA PROCESSING OR GENERATION, IN GENERAL / H04N PICTORIAL COMMUNICATION, e.g. TELEVISION , Bildübertragung, z.B. Fernsehen



    AUTOMATIC CAMERA INSPECTION SYSTEM

    TAKAHASHI YUSUKE / KOBAYASHI HIROYUKI / SETO NAOTO et al. | European Patent Office | 2021

    Free access

    CAMERA AUTOMATIC INSPECTION SYSTEM

    TAKAHASHI YUSUKE / KOBAYASHI HIROYUKI / SETO NAOTO et al. | European Patent Office | 2021

    Free access

    Automatic inspection system for camera

    TAKAHASHI YUSUKE / KOBAYASHI HIROYUKI / SETO NAOTO et al. | European Patent Office | 2022

    Free access

    CAMERA IMAGE INSPECTION SYSTEM AND CAMERA IMAGE INSPECTION METHOD

    NOSE TAKAYUKI | European Patent Office | 2019

    Free access

    CAMERA OPTICAL AXIS INSPECTION METHOD, CAMERA OPTICAL AXIS INSPECTION LINE, AND CAMERA OPTICAL AXIS INSPECTION SYSTEM

    ASAI NAZUKI / SATO TAKASHI / KIRA HIDEKI et al. | European Patent Office | 2019

    Free access