Adjacency effect correction of optical satellite image with sub-meter spatial resolution

doi:10.7498/aps.70.20202187

	Adjacency effect correction of optical satellite image with sub-meter spatial resolution
	Wang Tao 2,3; Nan, Zhou 2,3; Yi Wei-Ning 2; Hong Jin 2; Liu Xiao 2; Li Xin 2; Zhang Quan 2; Liu Shi-Yu 1; Li Zhao-Zhou 4; Li Kai-Tao 5
刊名	ACTA PHYSICA SINICA
	2021-07-05
卷号	70
关键词	adjacency effect sub-meter satellite image adaptive atmospheric correction quantitative remote sensing
ISSN号	1000-3290
DOI	10.7498/aps.70.20202187
通讯作者	Cui Wen-Yu(cuiwenyu@aiofm.ac.cn)
英文摘要	The adjacency effect, the contribution of the neighboring pixels to the radiance of the line of sight pixel, is caused by the Rayleigh scattering of atmospheric molecules and Mie scattering of aerosol particles. The adjacency effect will cause the reflectance of each pixel in the apparent reflectance satellite image to be between the real reflectance and the average background reflectance, reducing the accuracy of the surface reflectance inversion. Therefore, it is very important to remove the adjacency effect to improve the accuracy of retrieving the surface reflectance from satellite images. The most critical issue of the adjacency effect is to accurately calculate the weight of the contribution of each background pixel to the adjacency effect. The weight value of the contribution of each background pixel to the adjacency effect mainly depends on the spatial distance between the target pixel and the background pixel, the difference in reflectance between the target pixel and the background pixel, and the optical thickness of atmospheric molecules and the optical thickness of aerosol. At present, the commonly used weight function for calculating the weight value considers only the influence of optical thickness and spatial distance on the weight value. These weight functions are applied to a relatively uniform surface. However, when these weight functions are applied to an inhomogeneous surface, they will greatly reduce the accuracy of the adjacency effect correction. The combination of ground features in satellite images with the sub-meter spatial resolution is complex, so the influence of the difference in reflectance between the target pixel and the background pixel on the adjacency effect must be considered. The adaptive atmospheric correction algorithm proposed in this paper can adjust the weight value of the contribution of background pixels to the adjacency effect according to the spatial distance between the target pixel and the background pixel, the difference in reflectance between the target pixel and the background pixel, and the difference between the atmospheric molecules' optical thickness and aerosol optical thickness. The adaptive atmospheric correction algorithm is used to correct the adjacency effect on GF-2 panchromatic satellite images. The results show that the adaptive atmospheric correction algorithm can effectively remove the adjacency effect in sub-meter spatial resolution optical satellite images, improve both the accuracy of quantitative study and the satellite image quality.
资助项目	National Key R&D Program of China[2018YFB0504600]
WOS关键词	ATMOSPHERIC CORRECTION ; COASTAL ; ALGORITHM
WOS研究方向	Physics
语种	英语
出版者	CHINESE PHYSICAL SOC
WOS记录号	WOS:000672791600038
资助机构	National Key R&D Program of China
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/123559]
专题	中国科学院合肥物质科学研究院
通讯作者	Cui Wen-Yu
作者单位	1.Anhui Inst Natl Def Sci & Technol Informat, Hefei 230001, Peoples R China 2.Chinese Acad Sci, Hefei Inst Phys Sci, Anhui Inst Opt & Fine Mech, Key Lab Opt Calibrat & Characterizat, Hefei 230031, Peoples R China 3.Univ Sci & Technol China, Hefei 230026, Peoples R China 4.China Ctr Resources Satellite Data & Applicat, Beijing 100094, Peoples R China 5.Chinese Acad Sci, Inst Remote Sensing & Digital Earth, State Environm Protect Key Lab Satellite Remote S, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Wang Tao,Nan, Zhou,Yi Wei-Ning,et al. Adjacency effect correction of optical satellite image with sub-meter spatial resolution[J]. ACTA PHYSICA SINICA,2021,70.
APA	Wang Tao.,Nan, Zhou.,Yi Wei-Ning.,Hong Jin.,Liu Xiao.,...&Cui Wen-Yu.(2021).Adjacency effect correction of optical satellite image with sub-meter spatial resolution.ACTA PHYSICA SINICA,70.
MLA	Wang Tao,et al."Adjacency effect correction of optical satellite image with sub-meter spatial resolution".ACTA PHYSICA SINICA 70(2021).