Research PaperNo Access

New texture-based pansharpening method using wavelet packet transform and PCA

Iran University of Science and Technology, School of Computer Engineering, University Road, Hengam Street, Resalat Square, Tehran 16846-13114, Iran

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Peyman Kabiri

http://orcid.org/0000-0001-5143-0498

Iran University of Science and Technology, School of Computer Engineering, University Road, Hengam Street, Resalat Square, Tehran 16846-13114, Iran

E-mail Address: peyman.kabiri@iust.ac.ir

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https://doi.org/10.1142/S0219691320500253Cited by:4 (Source: Crossref)

Abstract

Image fusion is an important concept in remote sensing. Earth observation satellites provide both high-resolution panchromatic and low-resolution multispectral images. Pansharpening is aimed on fusion of a low-resolution multispectral image with a high-resolution panchromatic image. Because of this fusion, a multispectral image with high spatial and spectral resolution is generated. This paper reports a new method to improve spatial resolution of the final multispectral image. The reported work proposes an image fusion method using wavelet packet transform (WPT) and principal component analysis (PCA) methods based on the textures of the panchromatic image. Initially, adaptive PCA (APCA) is applied to both multispectral and panchromatic images. Consequently, WPT is used to decompose the first principal component of multispectral and panchromatic images. Using WPT, high frequency details of both panchromatic and multispectral images are extracted. In areas with similar texture, extracted spatial details from the panchromatic image are injected into the multispectral image. Experimental results show that the proposed method can provide promising results in fusing multispectral images with high-spatial resolution panchromatic image. Moreover, results show that the proposed method can successfully improve spectral features of the multispectral image.

Keywords:

AMSC: 86-08, 68U10

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