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| 基于Landsat TM数据的东平湖水体提取方法研究 | |
| 引用本文： | 张洁,王心源,高超,任霞,谢杰.基于Landsat TM数据的东平湖水体提取方法研究[J].测绘与空间地理信息,2012,35(4):23-27. |
| 作者姓名： | 张洁 王心源 高超 任霞 谢杰 |
| 作者单位： | 1. 安徽师范大学国土资源与旅游学院,安徽芜湖,241000 2. 中国科学院对地观测与数字地球科学中心,北京,100101 3. 安徽师范大学环境科学学院,安徽芜湖,241000 |
| 基金项目： | 湖泊与环境国家重点实验室开放基金项目(2010 SKL015);安徽省高等学校省级自然科学研究重大项目(ZD200908)资助 |
| 摘 要： | 文章以东平湖LANDSAT TM影像为例,根据影像各波段间的相关性以及地物在影像上的灰度差异,分别采用单波段和多波段阈值法对影像上的水体进行提取.在此基础上,结合(TM2 +TM3)-(TM4 +TM5)设定阈值和TM5单波段阈值法,提出了一种综合水体提取的方法,最后,对各方法提取的结果进行精度评价.试验结果表明:综合提取法在该研究区域具有较好的水体提取效果,极大地改善了原始单一方法的水体提取精度. |
| 关 键 词： | 水体信息 TM影像 阈值 提取 |
Research on the Method of Extracting Water Information in Dongping Lake by Using Landsat TM Image |
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| ZHANG Jie , WANG Xin-yuan , GAO Chao , REN Xia , XIE Jie.Research on the Method of Extracting Water Information in Dongping Lake by Using Landsat TM Image[J].Geomatics & Spatial Information Technology,2012,35(4):23-27. | |
| Authors: | ZHANG Jie WANG Xin-yuan GAO Chao REN Xia XIE Jie |
| Institution: | 1.Territorial Resources and Tourism,Anhui Normal University,Wuhu 241000,China; 2.Center for Earth Observation and Digital Earth,Chinese Academy of Sciences,Beijing 100101,China; 3.College of Environmental Science and Engineering,Anhui Normal University,Wuhu 241000,China) |
| Abstract: | The paper takes the case of Dongping Lake Landsat TM image.According to the correlation of image bands and image gray differences of objects,the water is extracted by the single-band and multi-band threshold method respectively.On this basis,the paper proposes a comprehensive water extraction method through the threshold setting by(TM2 + TM3)-(TM4 + TM5) and TM5single-band,and evaluates the result accuracy of these methods for water extraction.The results show that this synthesis method has better ability to extract the water,which greatly improves the accuracy of original single method on water extraction. |
| Keywords: | water information TM image threshold extraction |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |