| 基于ENVI+IDL的水体提取后处理实现研究 |
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| 引用本文： | 陈超,杨树文,王亮,刘涛,李轶鲲.基于ENVI+IDL的水体提取后处理实现研究[J].测绘与空间地理信息,2011(6):64-66,75. |
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| 作者姓名： | 陈超 杨树文 王亮 刘涛 李轶鲲 |
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| 作者单位： | 中国测绘科学研究院;兰州交通大学数理与软件工程学院 |
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| 基金项目： | 中铁第四勘察设计院集团有限公司基金项目(2009D-1)资助 |
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| 摘 要： | 通过IDL语言调用ENVI二次开发函数库,首先基于多波段谱间关系法实现华南山区细小水体的自动提取,然后利用数学形态学膨胀滤波算法对图像进行断线连接和小孔填充,最后通过对比形态学腐蚀算法和Pavli-dis异步细化算法对图像进行细化处理,从而得到比较理想的细小水体。结果表明:该方法能够有效解决水体提取后断线连接、空洞填充及细小水体细化等问题,从而为水体自动、快速提取和分类提供有力帮助。
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| 关 键 词： | 水体提取 多波段谱间关系法 形态学膨胀滤波 图像细化 IDL |
Study on the Implementation of Post-Processing after Water Bodies Extraction Based on ENVI+IDL |
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| CHEN Chao,YANG Shu-wen,WANG Liang,LIU Tao,LI Yi-kun.Study on the Implementation of Post-Processing after Water Bodies Extraction Based on ENVI+IDL[J].Geomatics & Spatial Information Technology,2011(6):64-66,75. |
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| Authors: | CHEN Chao YANG Shu-wen WANG Liang LIU Tao LI Yi-kun |
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| Institution: | 1.Chinese Academy of Surveying and Mapping,Beijing 100039,China; 2.School of Mathematics,Physics and Software Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China) |
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| Abstract: | The IDL language calling the ENVI secondary development library,firstly,this paper achieved the automatic small water-body extraction in the mountain area of south China based on method of multi-band spectral relationship,and then used the mathematical morphological dilation filtering algorithm to broken link and fill holes.Finally,by comparing the thinning result between morphological erosion algorithm and Pavlidis asynchronous thinning algorithm,it acquired an ideal small water-body.The conclusion proved this method can effectively solve the problem of broken link,filling holes and small water-body refining and so on,after picking-up water-body.Thus it provide quick and effective help for automatic picking-up water-body and classification. |
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| Keywords: | water-body extraction method of multi-band spectral relationship morphological dilation filtering image thinning IDL |
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