不同大气校正模型对GF-6 WFV影像清晰度的影响评价研究  

Evaluation of the Impact of Different Atmospheric Correction Models on the Sharpness of GF-6 WFV Images

作　　者：任金铜 王志红 段夕跃 REN Jintong;WANG Zhihong;DUAN Xiyue(Guizhou Province Key Laboratory of Ecological Protection and Restoration of Typical Plateau Wetlands,Guizhou University of Engineering Science,Bijie 551700,China;Institute of Land and Resource Surveying and Mapping of Guangdong Province,Guangzhou 510000,China)

机构地区：[1]贵州工程应用技术学院、贵州省典型高原湿地保护与修复重点实验室,贵州毕节551700 [2]广东省国土资源测绘院,广东广州510000

出　　处：《测绘与空间地理信息》2023年第10期32-35,共4页Geomatics & Spatial Information Technology

基　　金：贵州省教育厅青年科技人才成长项目(黔教合KY字〔2020〕149);毕节市科技计划联合基金项目(毕科联合字G〔2019〕15号);智慧地理空间信息应用工程中心(毕科联合〔2023〕8号);贵州省区域内一流建设学科“生态学”(黔教XKTJ〔2020〕22)资助。

摘　　要：为探讨不同大气校正模型对高分六号(GF-6)WFV影像清晰度的提升,利用主客观相结合的方法对大气校正后的影像清晰度进行评价。结果表明:1)不同大气校正模型对影像清晰度提升的效果不同。从基于地理视觉要素的主观评价来看,大气校正后的GF-6 WFV影像纹理特征更为明显,清晰度得以提升。2)基于影像特征的定量评价结果表明,不同的大气校正模型对GF-6 WFV影像清晰度提升程度不同,快速大气校正对影像提升效果最为明显。3)从基于色彩保真度的定量评价结果可知,不同大气校正结果对不同地物反射率影响较为明显,FLAASH大气校正结果更适合于植被遥感应用研究,快速大气校正模型的适用范围更广。In order to explore the improvement of image sharpness of GF-6 WFV using different atmospheric correction models,a combination of subjective and objective methods are used to evaluate the image sharpness after atmospheric correction.The results show that:(1)Different atmospheric correction models have different effects on the improvement of image sharpness.From the subjective evaluation based on geographical visual elements,the texture features of GF-6 WFV images after atmospheric correction are more obvious,and the sharpness is improved.(2)The quantitative evaluation results based on image characteristics show that different atmospheric correction models have different degrees of improvement in the image sharpness of GF-6 WFV,and the atmospheric correction of the rapid atmospheric correction has the most obvious effect on image improvement.(3)From the color fidelity-based method,the quantitative evaluation results show that different atmospheric correction results have obvious effects on the reflectivity of different ground objects.The FLAASH atmospheric correction results are more suitable for the application of vegetation remote sensing research,while the fast atmospheric correction model has a wider application range.

关 键 词：大气校正 GF-6 WFV 影像评价 影像清晰度 

分 类 号：P237[天文地球—摄影测量与遥感]