By using multiple structuring elements morphological operators to detect edge at the selected coarse edge points, the edge can be detected very well and the noise also can be restrained very well.

• 针对图像中噪声和边缘形态的不同，建立了多个结构元素，采用多结构元形态检测算子对选取的突变点进行形态操作，在抑制噪声的同时，较好地提取了边缘。