论文

基于Radon域描绘子乾安湖群湖泊形态变化遥感信息提取

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  • 1. 中国科学院东北地理与农业生态研究所, 吉林 长春 130012;
    2. 中国科学院研究生院, 北京 100039
李晓峰(1978-), 男, 黑龙江讷河人, 博士, 助理研究员, 主要从事遥感图像处理、湿地遥感等方面的研究。E-mail: lixiaofeng1228@gmail.com

收稿日期: 2008-11-10

  修回日期: 2009-04-09

  网络出版日期: 2009-05-20

基金资助

中国科学院东北地理与农业生态研究所青年博士基金项目(O8H2031001)、国家自然科学基金项目(40871188) 资助。

Shape Change Remote Sensing Information Extraction of Lakes in Qian'an Group Lakes Based on Radon Descriptor

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  • 1. Northeast Institute of Geography and Agroecology, Chinese Academy Sciences, Changchun, Jilin 130012;
    2. Graduate University of the Chinese Academy of Sciences, Beijing 100039

Received date: 2008-11-10

  Revised date: 2009-04-09

  Online published: 2009-05-20

摘要

以乾安湖泊群为研究对象,利用1989年和2001年乾安县TM影像分割得到两个时期的湖群对象,利用具有几何不变性的Radon域描绘子提取每个湖泊对象的形态特征向量,根据所定义的湖泊相似度指数计算出两个时期湖泊对象的相似度,定量地描述了湖泊对象的时空形态变化特征。通过对所建立的面向对象数据库的挖掘,得到了比传统的湖泊面积变化检测更加丰富有效的信息,为防止湖泊进一步萎缩制定有效的保护性措施提供了数量化依据。

本文引用格式

李晓峰, 张树清, 那晓东, 于欢, 潘欣 . 基于Radon域描绘子乾安湖群湖泊形态变化遥感信息提取[J]. 地理科学, 2009 , 29(3) : 421 -426 . DOI: 10.13249/j.cnki.sgs.2009.03.421

Abstract

Remote sensing technology is introduced by many related research as an efficient method to monitor dynamic change of lakes.But most of them only pay attention to lake area change,less to the information extraction of lake shape.In this paper,Qian′an Group Lakes are taken as the study objects,and lake objects of two periods are obtained by the segmentation of TM images in 1989 and 2001,then shape character vectors of each object are extracted using geometric invariance Radon descriptor.Similarity indices of each lake object between two periods are also computed according to the definition,so shape spatial-temporal variation of lake objects can be quantitatively described.Through information mining for object-oriented database in which shape character vector and similarity indices are saved,the obtained information is more abundant and efficient than that by traditional area change detection of lakes.These provide quantitative base for devising effective conservation measures to prevent lake drying up further.

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