【摘要】 采用离散卷积的方法，利用Ｓｏｂｅｌ算子，Ｌａｐｌａｃｅ算子和梯度算子进行卷积．利用此３种方法均可实现边缘提取的目的，其中Ｓｏｂｅｌ算子的效果最佳．经过对实际图像的处理，证明了方法的可行性．通过对图像的边缘检测可以对障碍物进行定位从而实现导航的要求．更多还原

【Abstract】 Anyone of the Sobel operator, Laplace operator and gradient operator can be adopted to make the discrete convolution and to realize the edge extraction of an obstacle, and using the Sobel operator can achieve the best result By the edge detection of an image, the obstacle can be positioned so as to attain the goal of navigation.更多还原