The invention discloses a visual detection method and device for guide rail butt joint. The visual detection method comprises the steps that first image information and third image information of an upper guide rail and second image information and fourth image information of a lower guide rail are acquired based on a visual snapshot unit; performing perspective transformation on the first image information and the second image information to obtain first transformation image information and second transformation image information; obtaining first comparison information through superposition comparison; performing three-dimensional reconstruction on the image information based on an SFM algorithm to obtain first reconstruction information and second reconstruction information, and obtaining second comparison information and third comparison information by combining the standard image information with the first reconstruction information and the second reconstruction information; and performing analysis by combining the first comparison information, the second comparison information and the third comparison information to obtain a visual detection result. The visual detection method detects the butt joint contour of the guide rail through perspective transformation and detects the defect position of the guide rail in combination with three-dimensional reconstruction, so that the butt joint reliability of the guide rail is improved.

    本发明公开了一种用于导轨对接的视觉检测方法及装置,视觉检测方法包括:基于视觉抓拍单元获取上导轨的第一图像信息和第三图像信息,以及下导轨的第二图像信息和第四图像信息;对第一图像信息和第二图像信息进行透视变换得到第一变换图像信息和第二变换图像信息;通过叠合对比得到第一对比信息;基于SFM算法对图像信息进行三维重建,得到第一重建信息和第二重建信息,通过标准图像信息结合第一重建信息和第二重建信息获取第二对比信息和第三对比信息;结合第一对比信息、第二对比信息以及第三对比信息分析得到视觉检测结果。视觉检测方法通过透视变换检测导轨对接轮廓,结合三维重建检测导轨缺陷位置,从而提高导轨对接的可靠性。


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    Title :

    Visual inspection method and device for butt joint of guide rails


    Additional title:

    一种用于导轨对接的视觉检测方法及装置


    Contributors:
    LI ZHENHUI (author) / WANG JIANGUO (author) / MAI WEIQI (author) / CHEN GUO (author)

    Publication date :

    2023-10-03


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B66B Aufzüge , ELEVATORS / G01B MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS , Messen der Länge, der Dicke oder ähnlicher linearer Abmessungen / G06T Bilddatenverarbeitung oder Bilddatenerzeugung allgemein , IMAGE DATA PROCESSING OR GENERATION, IN GENERAL



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