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-with Canny operator to detect the edges in the image P0404 : image thresholding segmentation P0405 : water

实现车牌自动定位的MATLAB程序：对图像进行预处理，垂直边缘检测，形态学运算，提取出车牌。-Implementation of Automatic Vehicle Location MATLAB procedures: pre-processing of images, vertical edge detection, morphological operations to extract license plate.