说明：  学习matlab图像处理的绝对有用的程序，所有程序均调试通过，程序代码说明 P0401：用Prewitt算子检测图像的边缘 P0402：用不同σ值的LoG算子检测图像的边缘 P0403：用Canny算子检测图像的边缘 P0404：图像的阈值分割 P0405：用水线阈值法分割图像 P0406：对矩阵进行四叉树分解 P0407：将图像分为文字和非文字的两个类别 P0408：形态学梯度检测二值图像的边缘 P0409：形态学实例——从PCB图像中删除所有电流线，仅保留芯片对象
(Learn matlab image processing of absolute useful program, all procedures is commissioning, the program code instructions： P0401: use Prewitt operator detection image edges P0402: with different sigma value of image edge detection LoG operator P0403: with the edge of the Canny operator detection images P0404: image threshold segmentation P0405: water line threshold value method segmentation images P0406: four binary tree of matrix decomposition P0407: will the image into text and erbal two )