A Novel Pan-Sharpening Framework Based on Matting Model and Multiscale TransformReportar como inadecuado


A Novel Pan-Sharpening Framework Based on Matting Model and Multiscale Transform


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1

School of Information Technology, Jiangxi University of Finance and Economics, Nanchang 330032, China

2

School of Software and Communication Engineering, Jiangxi University of Finance and Economics, Nanchang 330032, China

3

Institute of Biomedical Engineering, Xi’an Jiaotong University, Xi’an 710049, China





*

Author to whom correspondence should be addressed.



Academic Editors: Guoqing Zhou and Prasad S. Thenkabail

Abstract Pan-sharpening aims to sharpen a low spatial resolution multispectral MS image by combining the spatial detail information extracted from a panchromatic PAN image. An effective pan-sharpening method should produce a high spatial resolution MS image while preserving more spectral information. Unlike traditional intensity-hue-saturation IHS- and principal component analysis PCA-based multiscale transform methods, a novel pan-sharpening framework based on the matting model MM and multiscale transform is presented in this paper. First, we use the intensity component I of the MS image as the alpha channel to generate the spectral foreground and background. Then, an appropriate multiscale transform is utilized to fuse the PAN image and the upsampled I component to obtain the fused high-resolution gray image. In the fusion, two preeminent fusion rules are proposed to fuse the low- and high-frequency coefficients in the transform domain. Finally, the high-resolution sharpened MS image is obtained by linearly compositing the fused gray image with the upsampled foreground and background images. The proposed framework is the first work in the pan-sharpening field. A large number of experiments were tested on various satellite datasets; the subjective visual and objective evaluation results indicate that the proposed method performs better than the IHS- and PCA-based frameworks, as well as other state-of-the-art pan-sharpening methods both in terms of spatial quality and spectral maintenance. View Full-Text

Keywords: pan-sharpening; matting model; multiscale transform; image fusion pan-sharpening; matting model; multiscale transform; image fusion





Autor: Yong Yang 1, Weiguo Wan 1, Shuying Huang 2,* , Pan Lin 3 and Yue Que 1

Fuente: http://mdpi.com/



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