倒装焊中图像对准算法的研究

针对倒装焊中常用的十字架对准标志的几何特征,采用形态学边缘检测算法提取图像边缘,通过将简化的Hough变换和最小二乘相结合的直线提取方法,提取出较为精确的边缘直线,实现了一种提取十字架标志的四条长边缘直线的图像处理算法。实验结果表明,该算法与相关算法相比具有更快的对准速度和更高的对准精度,且对有局部残缺的图像不敏感。

Image Alignment Algorithm in Flip Chip

According to the geometrical features of cross symbol in flip chip,morphological edge detection algorithm is used for the image edge extraction.An accurate edge straight line is extracted by straight line extraction combining simplified Hough transform with least-squares,and an image processing algorithm with four long edge straight lines for extracting cross symbol is realized.The experimental results show that the algorithm is faster and more accurate in the alignment than the relevant algorithms,and is n...