针对高性能贴片机须具有快速、准确的视觉定位的要求,通过改进一种混合空间增强的预处理方法,采用Hough变换与最小二乘法相结合的方法提取出了较为精确的边缘直线,实现了一种利用十字叉标记几何信息,并能进行快速对准的算法。实验结果表明,该算法具有较快的速度,对比例变化和局部残缺不敏感。 For high-performance placement machine must have a fast and accurate visual positioning requirements, by improving a hybrid space enhancement pretreatment method, using Hough transform and least squares method to extract a more accurate edge of the line, to achieve An algorithm that uses a cross to mark geometric information and can be quickly aligned. The experimental results show that the proposed algorithm is fast and insensitive to the changes of proportional and local defects.