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遥感技术与应用  2011, Vol. 26 Issue (2): 233-238    DOI: 10.11873/j.issn.1004-0323.2011.2.233
图像处理     
基于窗口傅立叶变换功率谱分析的盐田地区高分辨率遥感影像分割分类方法探讨
王焕萍,刘勇
(兰州大学资源环境学院,甘肃 兰州730000)
The Study on Classification of High Resolution Remote Sensing Image in Saline Area based on Window Fourier Transform Power Spectrum Analysis
WANG Huan-ping,LIU Yong
(College of Resources and Environment,Lanzhou University,Lanzhou 730000,China)
 全文: PDF(2993 KB)  
摘要:

图像分割是面向对象图像分析的基础。目前常规的图像分割算法普遍基于光谱同质性假设,但是这种假设对于提取干旱地区盐田这种具有析出结晶盐与卤水两种高反差地物共存的空间对象而言显得不足为用。针对面向对象图像分析中只采用光谱和形状异质进行图像分割的不足,以吉兰泰盐田及周边地区2008年11月SPOT 5影像为例,首先采用窗口傅立叶变换功率谱方法提取影像纹理特征,然后进行基于纹理、光谱的多尺度分割,进而对分割后图像进行多层次分类来提取盐田信息。实验结果表明,该方法对盐田地区的信息提取有较好的效果。

关键词: 窗口傅立叶变换功率谱纹理多尺度分割多层次分类SPOT 5影像    
Abstract:

The image segmentation is the basis of object\|based image analysis method,which is usually carried out based on the hypothesis of spectral homogeneity.But this hypothesis is not quite applied to the saline lake in arid region which composed of two surface features with high contrast (crystalline salt and brine) in spectrum.Aiming at the shortcoming of segmentation only based heterogeneity of spectrum and shape in object based image analysis methods,the segmentation algorithms based on texture are proposed.In this paper,we firstly extract texture features using window Fourier power spectrum method.Next,multi\|resolution segmentation are carried out on texture image and multi\|spectral image.Finally,we classify polygons produced by segmentation in multi\|level.The paper takes SPOT 5 image acquired in November 2008 of Jilantai Saline Lake and the surrounding areas for example,and extracts saline lake from SPOT 5 image using the method mentioned above.The result shows that the proposed method is capable of effectively extracting features in saline area.
 

Key words: Window Fourier transform    Power spectrum    Texture;Multiresolution segmentation    Hierarchical classification    SPOT5 image
收稿日期: 2010-10-18 出版日期: 2011-07-25
:  TP 75  
基金资助:

阿拉善SEE生态协会合作项目“乌兰布和沙漠梭梭林遥感调查”(SEEA0905YWL001)。

作者简介: 王焕萍(1988- ),女,甘肃庆城人,硕士研究生,主要从事遥感图像处理研究。Email:wanghp09@lzu.cn。
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引用本文:

王焕萍,刘勇. 基于窗口傅立叶变换功率谱分析的盐田地区高分辨率遥感影像分割分类方法探讨[J]. 遥感技术与应用, 2011, 26(2): 233-238.

WANG Huan-ping,LIU Yong. The Study on Classification of High Resolution Remote Sensing Image in Saline Area based on Window Fourier Transform Power Spectrum Analysis. Remote Sensing Technology and Application, 2011, 26(2): 233-238.

链接本文:

http://www.rsta.ac.cn/CN/10.11873/j.issn.1004-0323.2011.2.233        http://www.rsta.ac.cn/CN/Y2011/V26/I2/233

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