基于形态学的遥感图像全方位边缘检测算法研究

Research on Omnidirectional Egde Detection Algorithm Based on Morphology in Remote Sensing Image

遥感图像存在较多的噪声和畸变 ,直接用形态学梯度作边缘检测 ,存在结构元素单一、只对结构元素同方向的边缘敏感、去噪能力弱的缺陷。本文首先构造了全方位形态学结构元并进行边缘检测 ,然后再作边缘合成并得到最终图像边缘。实验表明 。

Remote sensing image has a lot of noise.If its edge is detected directly by morphological grads,the noise can't be removed completely and only the same directional edge can be detected.Because of this,the omnidirectional morphological elements are designed to detect different directional edge.Then these edges compose the final image edge.Experiment done for the real remote sensing image proves that it is an efficient edge detection algorithm,which not only can remove noise,but also preserves image edge details.