原图像预处理，读入黑白图片并确定长和宽

拉普拉斯变换预处理，定义镜框矩阵和输出矩阵 拉普拉斯运算的三个矩阵 原图像矩阵处理，做一个“像框” 用拉普拉斯算子进行滤波 设定阈值，将图像二值化-The original image preprocessing, read black and white picture and determine the length and width of the Laplace transform pre-defined frame matrix and output matrix Laplace operator of the three matrices of the original image matrix processing, to make a " picture frame"　with La Las filtering operator set threshold, the image binarization