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首页> 外文期刊>Proceedings of the Institution of Mechanical Engineers, Part E. Journal of Process Mechanical Engineering >A new machine-vision-based approach for rapid dimensional inspection of an integrated circuit carrier tape
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A new machine-vision-based approach for rapid dimensional inspection of an integrated circuit carrier tape

机译：一种基于机器视觉的新方法，可对集成电路载带进行快速尺寸检查

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摘要

This study presents a rapid and reliable machine vision technique for measuring the principal features of interest in an integrated circuit carrier tape, namely the diameters of the circular sprocket perforations and centre hole, the width of the carrier tape, and the width and length of the centre cavity. In performing the measurement process; the quality of the image acquisition process is enhanced by using two auxiliary light sources to suppress the effects of natural variations in the environmental lighting conditions. Having acquired the image using a charge coupled device (CCD) camera, the features of interest are separated from the background region of the image using a two-threshold algorithm based on the Otsu threshold selection method. The edge of each feature is then extracted from the binary image using the Canny edge detection method. The dimensions of the circular features are obtained by fitting four right-angle triangles within the periphery of the extracted circular edge and then computing the circle diameter by taking the mean of the hypotenuse values of the four triangles as computed using the Pythagorean theorem.
机译：这项研究提出了一种快速可靠的机器视觉技术，用于测量集成电路载带中的主要特性，即圆形链轮孔眼和中心孔的直径，载带的宽度以及导带的宽度和长度。中心腔。在执行测量过程中;通过使用两个辅助光源来抑制环境光照条件下自然变化的影响，可以提高图像采集过程的质量。使用电荷耦合器件（CCD）相机获取图像后，使用基于Otsu阈值选择方法的两阈值算法，将感兴趣的特征与图像的背景区域分离。然后，使用Canny边缘检测方法从二进制图像中提取每个特征的边缘。圆形特征的尺寸是通过在提取的圆形边缘的外围内拟合四个直角三角形，然后通过采用勾股定理计算的四个三角形的斜边值的平均值来计算圆直径而获得的。

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