Removal of Thin Clouds in Landsat-8 OLI Data with Independent Component Analysis

ECU Author/Contributor (non-ECU co-authors, if there are any, appear on document)

Yang,Wang,Yong,Lv,Haitao,Qian,Jiang Shen (Creator)

Institution

East Carolina University (ECU )

Web Site: http://www.ecu.edu/lib/

Abstract: An approach to remove clouds in Landsat-8 operational land imager (OLI) datawas developed with independent component analysis (ICA). Within cloud-covered areas,histograms were derived to quantify changes of the reflectance values before and after theuse of the algorithm. Referred to a cloud-free image, changes of histogram curves validatedthe algorithm. Scatterplots were generated and linear regression performed for thereflectance values of each band before and after the algorithm, and compared to those of thereference image. Band-by-band, results in cloud removal were acceptable. The algorithmhad little effect on pixels in cloud-free areas after the analyses of histograms, scatterplots,and linear regression equations. Finally, the algorithm was applied to various land use andland cover types and cloud conditions, and to a full Landsat-8 scene yielding satisfactoryresults efficiently.

Additional Information

Publication

Other

Language: English

Date: 2015

Keywords

cloud removal; independent component analysis (ICA); Landsat-8 OLI data

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