| 基于ERDAS平台的NDVI植被覆盖变化检测 |
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| 引用本文： | 袁愈才,周晓光,杨小晴,黄文嘉.基于ERDAS平台的NDVI植被覆盖变化检测[J].测绘信息与工程,2011(5):11-13. |
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| 作者姓名： | 袁愈才 周晓光 杨小晴 黄文嘉 |
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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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| 基金项目： | 国家“863计划”资助项目（2009AA122004）; 中南大学研究生创新基金资助项目（2009ssxt175） |
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| 摘 要： | 介绍了利用ERDAS IMAGINE软件对多时相遥感影像进行地表植被覆盖变化检测的方法及过程,采用归一化植被指数差值法,得到包含多时相遥感影像变化信息的差异图像,依据差异图像的灰度直方图分布情况,结合经验公式设置变化阈值来分离变化信息和非变化信息。
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| 关 键 词： | ERDAS IMAGINE 归一化植被指数 变化阈值 |
Vegetation Coverage Change Detection Based on ERDAS Platform |
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| YUAN Yucai,ZHOU Xiaoguang,YANG Xiaoqing,HUANG Wenjia.Vegetation Coverage Change Detection Based on ERDAS Platform[J].Journal of Geomatics,2011(5):11-13. |
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| Authors: | YUAN Yucai ZHOU Xiaoguang YANG Xiaoqing HUANG Wenjia |
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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: | We introduce the methods and processes of vegetation coverage change detection with ERDAS IMAGINE software.Firstly,NDVI differencing algorithm is used to generate difference image,which contains all kinds of change information.Then,the change thresholds are set according to the distribution of the histogram of difference image and combining empirical formulas.Finally,changes are detected by using the thresholds to separate histogram of difference image.Experimental results show that using ERDAS platform to detect vegetation coverage change information is feasible. |
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| Keywords: | ERDAS IMAGINE NDVI change threshold |
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