计算机工程与应用 ›› 2009, Vol. 45 ›› Issue (13): 231-233.DOI: 10.3778/j.issn.1002-8331.2009.13.068

• 工程与应用 • 上一篇    下一篇

多时相MODIS数据融合效果的分析与评价

王 净1,李亚春2   

  1. 1.南京信息工程大学 应用气象学院,南京 210044
    2.江苏省气象局 气象科学研究所,南京 210008
  • 收稿日期:2008-03-10 修回日期:2008-05-26 出版日期:2009-05-01 发布日期:2009-05-01
  • 通讯作者: 王 净

Research and analysis on MODIS remote sensing multi-image fusion

WANG Jing1,LI Ya-chun2   

  1. 1.Nanjing University of Information Science and Technology,Nanjing 210044,China
    2.Meteorological Institute of Jiangsu Province,Nanjing 210008,China
  • Received:2008-03-10 Revised:2008-05-26 Online:2009-05-01 Published:2009-05-01
  • Contact: WANG Jing

摘要: MODIS是美国新一代地球观测卫星EOS计划中重要的传感器之一,其主要目标是实现对大气和地球环境变化的长期观测和研究,因此,充分挖掘并利用MODIS数据信息十分必要。采用IHS变换法、IHS_FFT法及IHS_WT法等多种方法对MODIS多时相数据进行融合比较,并从反映图像亮度、空间细节和光谱信息的三类统计参数给出客观评价分析结果。结果表明,IHS_WT方法的融合效果较优,特别是采用双正交小波基(bior6.8),而IHS和IHS_FFT法存在一定得光谱扭曲现象。

关键词: 中分辨率成像光谱仪, 图像融合, 散饱和变换法, 散饱和快速傅立叶变换法, 散饱和小波变换法

Abstract: MODIS is one of the most important sensors in American EOS projects.It aims at observing and investigating the atmosphere and earth climate changes for a long time.So it is necessary and important to explore the MODIS data information. In this paper,many kinds of improved methods,such as IHS,IHS_FFT and IHS_WT,are applied to MODIS multi-time image fusion.Also lots of subjective or impersonal evaluating indicators about light,spatial details and spectral information come to be used for evaluating the fusion images.IHS_WT method is also much better,especially using the biorthogonal wavelets bases(bior6.8),and IHS and IHS_FFT methods have spectral distortion phenomena.

Key words: moderate-resolution imaging spectroradiometer(MODIS), image fusion, Intensity-Hue-Saturation(IHS), Intensity-Hue-Saturation_Fast Fourier Transform(IHS_FFT), Intensity-Hue-Saturation_Wavelate Transform(IHS_WT)