基于三级灰度模型空间矩的陶瓷基片尺寸测量

Size measurement of ceramic substrate based on three level edge gradation model spatial moment

分析了图像边缘二级灰度模型空间矩的亚像素细分算法及其原理误差,建立了更符合实际的图像边缘三级灰度模型,推导出三级灰度模型下任意角度图像边缘的二维空间矩以及边缘的亚像素位置函数。将该算法应用于陶瓷基片的尺寸测量和分类中,测量效果好、分类精度高。该方法在零件尺寸的高精度测量中具有较高的实用价值。

This paper introduced the subpixel subdivision algorithm for spatial moment based on two level edge gradation model and analyzed its principle error, and established more actual three level edge gradation model, and deduced twodimensional spatial moment of random angle image edge as well as its subpixel location function. The algorithm is applied to size measurement and classification of ceramic substrate, and measurement is more effective and classification accuracy is higher. The algorithm has high value in measurement of component size.