| 基于EMD方法的多尺度边缘提取 |
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| 引用本文： | 韩春明,郭华东,王长林,范典,桑会勇.基于EMD方法的多尺度边缘提取[J].高技术通讯,2003,13(6):13-17. |
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| 作者姓名： | 韩春明 郭华东 王长林 范典 桑会勇 |
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| 作者单位： | 中国科学院遥感应用研究所遥感信息科学开放研究实验室,北京,100101 |
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| 基金项目： | 863计划(2001AAl32040)资助项目。 |
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| 摘 要： | 提出了一个基于EMD方法的多尺度边缘提取方法。利用EMD方法沿水平方向和垂直方向分别处理SAR图像，得到不同尺度的图像。计算不同尺度图像的梯度，得到不同尺度图像的边缘。根据一致性条件，从不同尺度图像的边缘提出SAR图像的边缘。利用这个方法处理了合成孔径雷达图像，成功地提取了图像的边缘信息。
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| 关 键 词： | EMD 多尺度边缘提取 图像处理 噪声 Canny算法 非极大值抑制 阀值化 幅值 方向角 空间一致性 |
Multiscale Edge Detection Based on EMD |
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| Han Chunming,Guo Huadong,Wang Changlin,Fan Dian,Sang Huiyong.Multiscale Edge Detection Based on EMD[J].High Technology Letters,2003,13(6):13-17. |
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| Authors: | Han Chunming Guo Huadong Wang Changlin Fan Dian Sang Huiyong |
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| Abstract: | An effective algorithm of multiscale technique for detecting edges in synthetic aperture radar (SAR) images is presented utilizing the empirical mode decomposition (EMD). Since EMD is one dimensional data processing method, EMD is employed to an image in two directions: horizontal (0? , vertical (90? respectively, to obtain two directional smoothed images at different scales. In this way, different scales image data are obtained. In order to obtain edge, the grad of different scales image is computed. Edge map is extracted from different scales image based on space uniform condition. Application of this method to SAR images shows that the effectiveness of the method is quite satisfactory. |
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| Keywords: | EMD Multiscale edge detection SAR |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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