基于立体视觉的汽车安全气囊装配精度测评方法

摘要

本文提出了一种基于双目立体视觉检测而实现汽车安全气囊装配精度测评的方法，将CCD摄像机提供的待测安全气囊的图像与标准安全气囊的三维数模相结合，建立了汽车安全气囊轮廓检测点的位置公差Vx、Vy、Vz以及点所在轮廓曲线段的形状公差K作为装配精度参数的评价指标，自动完成轮廓尺寸参数的计算，判定待测安全气囊是否合格。实际验证结果表明，所建立的立体视觉安全气囊装配精度测评方法和指标可以快捷精确的评价汽车安全气囊的装配质量。%This paper proposes a method based on binocular stereo vision detection, which can implement the auto airbag assembly precision of the measurement and evaluation. It combines the image of the airbag under test which is provided by the CCD camera with three dimensional mathematical model of standard airbags, establishes the position tolerances Vx,Vy,Vz of the car airbag contour detection points, and the shape tolerances K of the points on the contour curve segment is as evaluation indexes of assembly precision parameters, which can complete contour parameters automatically and determine whether the airbag under test qualified. The actual verification results show that, the assembly quality indexes and methods of stereo vision airbag assembly accuracy of the evaluation can evaluate the assembled quality of the airbag quickly and accurately.