title: Pansharpening with a Guided Filter Based on Three-Layer Decomposition.
abstract: State-of-the-art pansharpening methods generally inject the spatial structures of a high spatial resolution (HR) panchromatic (PAN) image into the corresponding low spatial resolution (LR) multispectral (MS) image by an injection model. In this paper, a novel pansharpening method with an edge-preserving guided filter based on three-layer decomposition is proposed. In the proposed method, the PAN image is decomposed into three layers: A strong edge layer, a detail layer, and a low-frequency layer. The edge layer and detail layer are then injected into the MS image by a proportional injection model. In addition, two new quantitative evaluation indices, including the modified correlation coefficient (MCC) and the modified universal image quality index (MUIQI) are developed. The proposed method was tested and verified by IKONOS, QuickBird, and Gaofen (GF)-1 satellite images, and it was compared with several of state-of-the-art pansharpening methods from both qualitative and quantitative aspects. The experimental results confirm the superiority of the proposed method.
authors.affiliation: School of Resource and Environmental Sciences, Wuhan University, Luoyu Road, Wuhan 430079, China. mengxc@whu.edu.cn.
authors.forename: Xiangchao
authors.initials: X
authors.lastname: Meng
authors.affiliation: State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Luoyu Road, Wuhan 430079, China. aaronleecool@hotmail.com.
authors.forename: Jie
authors.initials: J
authors.lastname: Li
authors.affiliation: School of Resource and Environmental Sciences, Wuhan University, Luoyu Road, Wuhan 430079, China. shenhf@whu.edu.cn.|Beijing Advanced Innovation Center for Imaging Technology, Capital Normal University, Beijing 100048, China. shenhf@whu.edu.cn.|Collaborative Innovation Center of Geospatial Technology, Luoyu Road, Wuhan 430079, China. shenhf@whu.edu.cn.
authors.forename: Huanfeng
authors.initials: H
authors.lastname: Shen
authors.affiliation: State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Luoyu Road, Wuhan 430079, China. zlp62@whu.edu.cn.|Collaborative Innovation Center of Geospatial Technology, Luoyu Road, Wuhan 430079, China. zlp62@whu.edu.cn.
authors.forename: Liangpei
authors.initials: L
authors.lastname: Zhang
authors.affiliation: State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Luoyu Road, Wuhan 430079, China. zhanghongyan@whu.edu.cn.|Collaborative Innovation Center of Geospatial Technology, Luoyu Road, Wuhan 430079, China. zhanghongyan@whu.edu.cn.
authors.forename: Hongyan
authors.initials: H
authors.lastname: Zhang
keywords: guided filter; multispectral (MS); panchromatic (PAN); pansharpening; three-layer decomposition