摘要
应用比值变换、IHS变换、主成分变换和合成比值变量变换等4种影像融合方法对QuickBird多光谱和全色遥感影像进行融合,并利用偏差指数、平均梯度等指标对融合效果进行定量评价;运用最佳指数因子确定参与成图的多光谱影像的波段.研究结果表明,合成比值变量变换法的融合效果最佳;最优波段组合为431,并在此基础上建立了地物判读分析依据,用于QuickBird遥感影像目视解译;采用容差格网矢量化技术进行遥感影像的屏幕矢量化,制作了1:2000比例尺农业园区底图.
As a case study of merging QuickBird multispectral and panchromatic remote sensing image, Brovey,IHS,PCA and Synthetic Variable Ratio(SVR) are choosen and their merging effects are evaluated quantificationally by difference index and average gradient; bands of merged image choosen to produce basic map are determined by optimium index factor(OIF). It is indicated that merging effect of SVR is beyond orther 3 algorithms;the optimal band combination is 431 which is applied to establish identification and analyse criterion of substances on earth surface for visual interpretation;tolerance-grid-digitalization method is used for screen-digitization in producing basic map for agricultural zone.
出处
《科技通报》
北大核心
2004年第5期392-396,共5页
Bulletin of Science and Technology
基金
国家自然科学基金资助项目(40001008)
财政部"浙江省绍兴县国家农业综合开发科技推广综合示范项目"基金资助项目(I40301)
关键词
摄影测量与遥感技术
农业遥感与信息技术
影像融合
QuickBird遥感影像
融合
定量评价
底图制作
photogrammetrg and remote sensing telementry
agriculture remote sensing and technology information
Image merging
QuickBird remote sensing image
fusion
rational evaluation
producing basic map
