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Journal of Applied Remote Sensing

Thin cloud removal from remote sensing images using multidirectional dual tree complex wavelet transform and transfer least square support vector regression
Author(s): Gensheng Hu; Xiaoyi Li; Dong Liang
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Paper Abstract

The existence of clouds affects the interpretation and utilization of remote sensing images. A thin cloud removal algorithm for cloud-contaminated remote sensing images is proposed by combining a multidirectional dual tree complex wavelet transform (M-DTCWT) with domain adaptation transfer least square support vector regression (T-LSSVR). First, M-DTCWT is constructed by using the hourglass filter bank in combination with DTCWT, which is used to decompose remote sensing images into multiscale and multidirectional subbands. Then the low-frequency subband coefficients of the cloud-free regions on target images and source domain images are used as samples for a T-LSSVR model, which can be used to predict those of the cloud regions on cloud-contaminated images. Finally, by enhancing the high-frequency coefficients and replacing the low-frequency coefficients, the thin clouds on cloud-contaminated images are removed. Experimental results show that M-DTCWT contributes to keeping the details of the ground objects of cloud-contaminated images, and the T-LSSVR model can effectively learn the contour information from multisource and multitemporal images, therefore, the proposed method achieves a good effect of thin cloud removal.

Paper Details

Date Published: 21 September 2015
PDF: 19 pages
J. Appl. Remote Sens. 9(1) 095053 doi: 10.1117/1.JRS.9.095053
Published in: Journal of Applied Remote Sensing Volume 9, Issue 1
Show Author Affiliations
Gensheng Hu, Anhui Univ. (China)
Xiaoyi Li, Anhui Univ. (China)
Dong Liang, Anhui Univ. (China)

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