IHS方法在QuickBird数据融合中存在的问题及其改进
张荣群,赵明,王志成,高玲玲,翟慧卿
中国农业大学信息与电气工程学院,北京100083
THE PROBLEM EXISTENT IN THE IHS METHOD
FOR QUICKBIRD IMAGE FUSION AND THE
COUNTERMEASURES FOR ITS IMPROVEMENT
ZHANG Rong-Qun, ZHAO Meng, WANG Zhi-Cheng, GAO Ling-Ling, ZHAI Hui-Qing
College of Information and Electrical Engineering, China Agricultural University, Beijing 100083, China
摘要 针对IHS变换在QuickBird数据融合中存在的光谱扭曲问题,提出了利用Visual-Pan波段和线性加权匹配两种方法进行改进
,并给出了Visual-Pan波段方法中系数α的最佳取值范围,以及线性加权匹配融合图像的空间特征与光谱特征达到最佳效果时Pan
权值(wPan)和I权值(wI)的最佳取值。结果表明,对于Visual-Pan方法而言,当0.2<α<0.25时,可以获得非常好的融合效果; 而
对于线形加权匹配方法而言,当wpan=3/4、wI=1/4时,融合图像的空间特征与光谱特征可以达到最佳效果。
关键词 :
气象卫星 ,
条件植被指数 ,
监测 ,
干旱 ,
洪涝
Abstract : Aimed at solve the spectrum distortion problem of the IHS method that exists in the QuickBird data
fusion, this paper proposes the utilization of both the visual-pan band method and the linear weighted matching
method for its improvement, and provides the best value range of the coefficient α in the Visual-Pan band method
as well as the best weighted values of Pan and I when the spatial characteristics and the spectral characteristics
of the linear weighted matching fusion image achieve the best result. Tests show that when the value of α is
between 0.2 and 0.25, satisfying fusion effect can be obtained, and when the weighted values of Pan and I are 3/4
and 1/4, the spatial characteristics and the spectral characteristics of fusion image can achieve the best result.
Key words :
Meteorological satellite
VCI Monitoring
Drought Flood
收稿日期: 2006-11-27
出版日期: 2009-07-21
基金资助: 本研究得到了国家高技术研究发展计划(863计划)项目支持(2006AA10Z271)。
通讯作者:
张荣群(1964-),男,博士,副教授,主要从事3S技术应用研究,已发表论文30余篇,出版学术著作4部。
引用本文:
张荣群, 赵明, 王志成, 高玲玲, 翟慧卿. IHS方法在QuickBird数据融合中存在的问题及其改进[J]. 国土资源遥感, 2007, 19(3): 36-38.
ZHANG Rong-Qun, ZHAO Meng, WANG Zhi-Cheng, GAO Ling-Ling, ZHAI Hui-Qing. THE PROBLEM EXISTENT IN THE IHS METHOD
FOR QUICKBIRD IMAGE FUSION AND THE
COUNTERMEASURES FOR ITS IMPROVEMENT. REMOTE SENSING FOR LAND & RESOURCES, 2007, 19(3): 36-38.
链接本文:
https://www.gtzyyg.com/CN/10.6046/gtzyyg.2007.03.08
或
https://www.gtzyyg.com/CN/Y2007/V19/I3/36
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