To provide a method by which a deviation of a lock piece against a notch is accurately measured from an imaged picture of a fitting position between a notch of a railroad switch lock bar and a lock piece.SOLUTION: A lock deviation measuring apparatus 5 generates a through-view projection image executing a strain correction processing for an imaged picture taken through an inspection hole for inspecting a fitting point of a lock piece and a notch built in a lock bar of a railroad switch 7 and a through-view projection treatment which has a projection direction along the traveling direction of the lock piece, executes a picture matching process using template pictures related to an end face upper part of the lock piece and a facing surface of the notch facing the end face upper part respectively, detects a central position of the lock piece and a notch central position in a through-view projection image corresponding to each central positions of the end face upper part and facing surfaces and calculates a divergence of the lock piece against the notch based on the difference between the lock piece central position and the notch central position.SELECTED DRAWING: Figure 1

    【課題】転てつ機の鎖錠かんの切り欠きとロックピースとの嵌合箇所の撮影画像から、切り欠きに対するロックピースの偏移を精度よく測定できるようにすること。【解決手段】ロック偏移測定装置5は、転てつ機7の鎖錠かんに設けられた切り欠きとロックピースとの嵌合箇所を点検するための点検孔から撮影された撮影画像に対して歪み補正処理及びロックピースの移動方向に沿った方向を投影方向とした透視投影処理を行って透視投影画像を生成し、ロックピースの端面上部及びその端面上部に対向する切り欠きの対向面それぞれに係るテンプレート画像を用いた画像マッチング処理を行って、端面上部及び対向面それぞれの中央位置に対応する透視投影画像中のロックピース中央位置及び切り欠き中央位置を検出し、ロックピース中央位置と切り欠き中央位置の差に基づいて、切り欠きに対するロックピースの偏移を算出する。【選択図】図1


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    Title :

    LOCK DEVIATION MEASURING DEVICE AND METHOD FOR THE SAME


    Additional title:

    ロック偏移測定装置及びロック偏移測定方法


    Contributors:

    Publication date :

    2022-02-08


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B61L Leiten des Eisenbahnverkehrs , GUIDING RAILWAY TRAFFIC / G06T Bilddatenverarbeitung oder Bilddatenerzeugung allgemein , IMAGE DATA PROCESSING OR GENERATION, IN GENERAL



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