一种基于Canny检测算子的声呐图像边缘检测技术

A New Edge Detecting Technology on Sonar Image Based on Canny Detection Operator

光波在水体中传播距离短,衰减速度快,特别是对浑浊水体内的目标,几乎不能形成高质量的影像。当前获得浊水水体的目标影像的主要方法是图像声呐,然而,声呐形成的目标影像,不仅图像像素低、图像模糊,而且图像的边缘不连续、边缘丢失严重、虚假边缘特征明显。本文提出一种基于Canny检测算子的边缘检测技术,试图解决声呐图像在背景噪声大、边缘模糊、边缘丢失、边缘不连续的问题,并通过Matlab仿真验证了所提出方法的可行性。

Light wave travels short distance and decays fast in water body,especially for target in muddy water,it can hardly form high-quality image.The main method of obtaining target image of muddy water body is image Sonar,However,the target image formed by Sonar is not only low in image pixels and blurred,but also the edges are discontinuous.What’s more,the edges disappear at a great extent,and the false edges are obvious.In this paper,an edge detecting technique based on Canny detection operator is proposed to solve the problems of large background noise,fuzzy edges,missing edges and discontinuity of edges in sonar images.And finally the feasibility of the proposed method is verified by Matlab simulation.