| LOG算子边缘检测方法的改进方案 |
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| 引用本文： | 杨振亚,王勇,王成道. LOG算子边缘检测方法的改进方案[J]. 计算机应用与软件, 2004, 21(9): 87-89,83 |
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| 作者姓名： | 杨振亚 王勇 王成道 |
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| 作者单位： | 华东师范大学电子科学技术系,上海,200062;复旦大学计算机科学系,上海,200433 |
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| 摘 要： | 本文对LOG算子边缘检测方法的性能进行了分析和评价。针对LOG算子的缺陷，提出了选择性平滑方式清除图像中的椒盐噪声；提出了依据图像灰度的一阶导数极大值和二阶导数零穿相结合的边缘检测方法，抑制了图像中的大部分其它噪声，并保持了边缘定位精度；还通过用图像灰度共生矩阵的惯性矩特征值自适应调整高斯空间系数和边缘检测阈值，实现了图像边缘的自动提取。实践证明该方法具备有效性和实用性。
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| 关 键 词： | 边缘检测 LOG算子 高斯函数 惯性矩特征 |
THE ENHANCED METHOD OF LOG OPERATOR IN EDGE DETECTION |
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| Yang Zhenya Wang Yong Wang Chengdao. THE ENHANCED METHOD OF LOG OPERATOR IN EDGE DETECTION[J]. Computer Applications and Software, 2004, 21(9): 87-89,83 |
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| Authors: | Yang Zhenya Wang Yong Wang Chengdao |
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| Affiliation: | Yang Zhenya 1 Wang Yong 2 Wang Chengdao 1 1 |
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| Abstract: | The capability of edge detection using LOG operators is analyzed and evaluated in this paper.In order to avoid the defects of LOG operator,We proposed a new edge detection method here.Firstly,removed shot noises in image by selective smoothness.Secondly,by combining the first derivative's maximum and the second derivative's zero crossing of image gray scale,we successed in eliminating most of other noise in image and locating the edge accurately.Subsequently,by using variance of gray scale to auto adjust Gassian space coefficient and edge detection threshold,the image edge can be automatically detected.The efficient of this method is proved by practices. |
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| Keywords: | Edge detection LOG operator Gassian function Contrast of gray level |
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