| 一种改进的Canny边缘检测算法 |
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| 引用本文： | 刘国栋,范九伦. 一种改进的Canny边缘检测算法[J]. 微型机与应用, 2013, 0(22): 32-34,37 |
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| 作者姓名： | 刘国栋 范九伦 |
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| 作者单位： | 西安邮电大学通信与信息工程学院,陕西西安710061 |
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| 基金项目： | 国家自然科学基金资助项目（61102095）;陕西省教育厅专项科研计划（11JK1008） |
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| 摘 要： | 针对带噪声图像，提出了一种改进的Canny算子边缘检测算法。该算法用离散小波变换（DWT）分解和加权重构对图像进行平滑滤波，用Otsu阈值法（最大类间方差法）求出最佳的滞后闽值，在3×3邻域求得梯度法。实验证明，该算法在较好地抑制噪声的同时保留了更多边缘，检测出的图像边缘更加准确和丰富。
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| 关 键 词： | 边缘检测 离散小波变换 Otsu 改进Canny算子 |
An improved Canny edge detection algorithm |
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| Liu School of Communication ＆ Information Engineering,Guodong,Fan Jiulun. An improved Canny edge detection algorithm[J]. Microcomputer & its Applications, 2013, 0(22): 32-34,37 |
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| Authors: | Liu School of Communication ＆ Information Engineering Guodong Fan Jiulun |
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| Affiliation: | Xi＇an University of Posts ＆ Telecommunications,Xi＇an 710061, China) |
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| Abstract: | This article puts forward an improved Canny operator edge detection algorithm. This algorithm uses DWT decomposi- tion and weighted reconstruction to smooth and filter, uses Otsu threshold method （the largest between-cluster variance method） to seek the best delay threshold and seek gradient method in 3x3 neighborhood. Experimental results show that the algorithm can preserve more edge when better suppress noises, so that the detected edge of the image is more accurate and abundant. |
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| Keywords: | edge detection DWT Otsu improved Canny operator |
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