Assessment of the fused image of multispectral and panchromatic images of SPOT5 in the investigation of geological hazards  

作　　者：KANG TingJun,ZHANG XinChang & WANG HaiYing Department of Remote Sensing and GIS Engineering,Sun Yat-sen University,Guangzhou 510275,China 

出　　处：《Science China(Technological Sciences)》2008年第S2期144-153,共10页中国科学（技术科学英文版）

基　　金：Supported by the National Natural Science Foundation of China (Grant No.40471106);"985" Project of GIS and Remote Sensing for Geo-science of the Ministry of Education of China

摘　　要：The investigated area in this paper is located on the northern mountain in Guangzhou City.It is characterized by high relief and inaccessibility.Multispectral and pan Images of SPOT5 were used as the remote sensing data source,and high-pass filtering(HPF),Brovery transform(BT),intensity-hue-saturation(IHS),principal component analysis(PCA) and the modified IHS(MIHS) methods were adopted for image fusion.Here,a comparison has been made between the entire fused images and the original multispectral images.Subjective evaluation and objective evaluation(entropy,average gradient,correlation coefficient,distribution of gray) have been adopted to assess the quality of the fused images.Also regional geological survey has been taken to find the interpretation veracity.Results show that the MIHS is the best image fusion method for geological hazards interpretation,and the fused image can provide abundant textural and spectral information for easy interpretation of such geological hazards as collapse,landslip,and debris flow.The investigated area in this paper is located on the northern mountain in Guangzhou City.It is characterized by high relief and inaccessibility.Multispectral and pan Images of SPOT5 were used as the remote sensing data source,and high-pass filtering(HPF),Brovery transform(BT),intensity-hue-saturation(IHS),principal component analysis(PCA) and the modified IHS(MIHS) methods were adopted for image fusion.Here,a comparison has been made between the entire fused images and the original multispectral images.Subjective evaluation and objective evaluation(entropy,average gradient,correlation coefficient,distribution of gray) have been adopted to assess the quality of the fused images.Also regional geological survey has been taken to find the interpretation veracity.Results show that the MIHS is the best image fusion method for geological hazards interpretation,and the fused image can provide abundant textural and spectral information for easy interpretation of such geological hazards as collapse,landslip,and debris flow.

关 键 词：GEOLOGICAL HAZARD REMOTE sensing image FUSION SPOT5 

分 类 号：P627[天文地球—地质矿产勘探]