| 基于LBV变换与多分辨率分析的水体提取研究 |
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| 引用本文： | 胡兵,杨敏华,刘璇.基于LBV变换与多分辨率分析的水体提取研究[J].测绘信息与工程,2011(5):20-22,25. |
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| 作者姓名： | 胡兵 杨敏华 刘璇 |
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| 作者单位： | 中南大学地球科学与信息物理学院,长沙市麓山南路932号410083 |
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| 摘 要： | 给出了一种改进的Otsu方法,采用LBV变换对TM数据进行处理,实现了B分量阈值的自动选取,以有效地提取水的精度,并引入小波多分辨率分析方法,进一步提高了自动提取水体的精度。
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| 关 键 词： | LBV变换 改进Otsu 小波分析 阈值 |
Water Body Extracting Based on LBV Transformation and Multi-resolution Analysis |
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| HU Bing,YANG Minhua,LIU Xuan.Water Body Extracting Based on LBV Transformation and Multi-resolution Analysis[J].Journal of Geomatics,2011(5):20-22,25. |
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| Authors: | HU Bing YANG Minhua LIU Xuan |
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| Institution: | (School of Geosciences and Info-Physics,Central South University,932 South Lushan Road,Changsha 410083,China) |
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| Abstract: | After LBV transformation is used to deal with the TM data,the water body has a large gray value on the B component image.On the B component image,the threshold is automatically selected based on an improved method of Otsu in order to extract the water body.To improve the accuracy of automatic extraction of water body,we introduce a wavelet multi-resolution analysis method to deal with B component image.Tests indicate that this method can increase the proportion of correct water body by 0.36%,also can reduce the proportion of wrong water body by 2.96%. |
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| Keywords: | LBV transformation improved Otsu wavelet analysis threshold |
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