基于多结构元素复合滤波的形态学边缘检测
Morphological Edge Detection Algorithm Based on Multi-structure Elements Compound Filter
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摘要: 为了进一步提高形态学边缘检测算法的性能,设计了一种多结构元素复合滤波器,定义了一种具有方向估计的形态学梯度,并在此基础上提出了一种对噪声不敏感的边缘检测算法。该算法充分发挥形态学变换方式和结构元素的噪声抑制和细节保持性能,用含有方向信息的结构元素检测图像的边缘,并通过沿梯度方向进行非极大值抑制获取单像素宽边缘。实验结果表明,本算法边缘检测效果良好,抗噪性能强,且处理速度较快。Abstract: In order to improve the performance of morphological edge detection algorithm,a compound filter with multi-structure elements was designed.At the same time,a morphological gradient with orientation was defined.On the basis of that,a noise immune morphological edge detection algorithm was presented.Noise suppression and detail preservation capability of morphological transformation mode and structure element were developed sufficiently.Edge was detected with structure elements which possessed direction information,and it was thinned with one pixel width by implementing non-maxima suppression along the orientation of gradient.Simulation results indicate that the proposed algorithm not only performs better in edge detection,noise immunity and processing speed.
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