A Geostatistical Filter for Remote Sensing Image Enhancement

doi:10.1007/s11004-019-09829-1

	A Geostatistical Filter for Remote Sensing Image Enhancement
	Wang, Qunming 3; Tong, Xiaohua 3; Atkinson, Peter M.1,2,4,5
刊名	MATHEMATICAL GEOSCIENCES
	2020-04-01
卷号	52 期号:3 页码:317-336
关键词	Remote sensing Geostatistics Image enhancement Image filtering Point spread function (PSF)
ISSN号	1874-8961
DOI	10.1007/s11004-019-09829-1
通讯作者	Wang, Qunming(wqm11111@126.com)
英文摘要	In this paper, a new method was investigated to enhance remote sensing images by alleviating the point spread function (PSF) effect. The PSF effect exists ubiquitously in remotely sensed imagery. As a result, image quality is greatly affected, and this imposes a fundamental limit on the amount of information captured in remotely sensed images. A geostatistical filter was proposed to enhance image quality based on a downscaling-then-upscaling scheme. The difference between this method and previous methods is that the PSF is represented by breaking the pixel down into a series of sub-pixels, facilitating downscaling using the PSF and then upscaling using a square-wave response. Thus, the sub-pixels allow disaggregation as an attempt to remove the PSF effect. Experimental results on simulated and real data sets both suggest that the proposed filter can enhance the original images by reducing the PSF effect and quantify the extent to which this is possible. The predictions using the new method outperform the original coarse PSF-contaminated imagery as well as a benchmark method. The proposed method represents a new solution to compensate for the limitations introduced by remote sensors (i.e., hardware) using computer techniques (i.e., software). The method has widespread application value, particularly for applications based on remote sensing image analysis.
WOS关键词	POINT-SPREAD FUNCTION ; IMPACT
WOS研究方向	Geology ; Mathematics
语种	英语
出版者	SPRINGER HEIDELBERG
WOS记录号	WOS:000521969200002
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/133577]
专题	中国科学院地理科学与资源研究所
通讯作者	Wang, Qunming
作者单位	1.Queens Univ Belfast, Sch Geog Archaeol & Palaeoecol, Belfast BT7 1NN, Antrim, North Ireland 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 3.Tongji Univ, Coll Surveying & Geoinformat, 1239 Siping Rd, Shanghai 200092, Peoples R China 4.Univ Southampton, Geog & Environm, Southampton SO17 1BJ, Hants, England 5.Univ Lancaster, Lancaster Environm Ctr, Lancaster LA1 4YQ, England
推荐引用方式 GB/T 7714	Wang, Qunming,Tong, Xiaohua,Atkinson, Peter M.. A Geostatistical Filter for Remote Sensing Image Enhancement[J]. MATHEMATICAL GEOSCIENCES,2020,52(3):317-336.
APA	Wang, Qunming,Tong, Xiaohua,&Atkinson, Peter M..(2020).A Geostatistical Filter for Remote Sensing Image Enhancement.MATHEMATICAL GEOSCIENCES,52(3),317-336.
MLA	Wang, Qunming,et al."A Geostatistical Filter for Remote Sensing Image Enhancement".MATHEMATICAL GEOSCIENCES 52.3(2020):317-336.