| Logistic回归模型在卫星云图云检测中的应用 |
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| 引用本文： | 费文龙,吕红,韦志辉.Logistic回归模型在卫星云图云检测中的应用[J].计算机工程与应用,2012,48(4):18-21. |
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| 作者姓名： | 费文龙 吕红 韦志辉 |
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| 作者单位： | 1.南京理工大学 计算机科学与技术学院，南京 2100942.南京信息工程大学 数理学院，南京 210044 |
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| 基金项目： | 国家自然科学基金（No.61071146）;国家自然科学基金（青年科学基金）（No.60802039）;南京理工大学自主科研项目（No.2010ZYT070）. |
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| 摘 要： | 云的自动检测和分类识别是所有卫星遥感资料应用的第一个步骤。基于Logistic回归模型的云图处理方法被用于FY-2C卫星云图的处理。利用逐步回归方法对云图的灰度及纹理特征进行提取，并计算出每个特征的回归系数；利用提取的特征进行云检测实验。将实验结果与地面观测资料进行对比，表明Logistic回归模型对云图处理是有效的，并且与传统的动态阈值分割方法相比，云检测的效果更好。
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| 关 键 词： | Logistic回归 卫星云图 云检测 特征提取 |
| 修稿时间： | |
Application of Logistic regression method in cloud detection of satellite image |
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| FEI Wenlong
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LV Hong
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WEI Zhihui.Application of Logistic regression method in cloud detection of satellite image[J].Computer Engineering and Applications,2012,48(4):18-21. |
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| Authors: | FEI Wenlong LV Hong WEI Zhihui |
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| Affiliation: | 1.School of Computer Science & Technology, Nanjing University of Science and Technology, Nanjing 210094, China2.College of Math & Physics, Nanjing University of Information Science & Technology, Nanjing 210044, China |
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| Abstract: | Automatic cloud detection is the first step of using the remote sensing data. In this study, a novel cloud detection method based on Logistic regression model is proposed. The stepwise regression is applied to extract the feature from the satellite image of FY-2C. The Logistic regression model is applied to detect the cloud. The result of experiment, compared with the surface observations, shows that the Logistic regression model is effective for cloud image processing, and the method is more accurate than the traditional threshold algorithm. |
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| Keywords: | Logistic regression satellite image cloud detection feature extract |
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