基于光谱映射和细节注入的Pansharpening  

Pansharpening by Jointing Spectral Mapping and Detail Injection

作　　者：刘红毅[1] 赵肖飞 韩海波 Jenny Qian Du 吴泽彬[3] 韦志辉[3] LIU Hong-yi;ZHAO Xiao-fei;HAN Hai-bo;DU Jenny Qian;WU Ze-bin;WEI Zhi-hui(School of Mathematics and Statistics,Nanjing University of Science and Technology,Nanjing,Jiangsu 210094,China;Department of Electrical and Computer Engineering,Mississippi State University,Mississippi State,MS 39762,America;School of Computer Science and Engineering,Nanjing University of Science and Technology,Nanjing,Jiangsu 210094,China)

机构地区：[1]南京理工大学数学与统计学院,江苏南京210094 [2]密西西比州立大学电气与计算机工程系,密西西比州斯塔克维尔39762 [3]南京理工大学计算机工程与科学学院,江苏南京210094

出　　处：《电子学报》2023年第6期1527-1540,共14页Acta Electronica Sinica

基　　金：国家自然科学基金面上项目(No.61971223,No.61871226);中央高校基本科研业务费专项资金资助(No.JSGP202204)。

摘　　要：Pansharpening通过在多光谱图像中注入全色图像的空间细节,从而获得高分辨率的多光谱图像.但细节注入的同时,可能会引起光谱失真.为了提高融合图像的光谱保真,本文提出了一种空谱结合的Pansharpening方法.充分利用全色和多光谱图像之间潜在的光谱关系,对全色图像的光谱信息进行增强,继而将增强后的全色图像细节注入多光谱图像中,并建立了统一的变分Pansharpening模型,同时实现了融合图像的光谱信息保持和空间结构细节增强.在不同数据集上进行的数值实验表明,相比现有的Pansharpening方法,本文所提方法具有比较好的融合效果,尤其在光谱保真方面,更具有一定的优势.Pansharpening aims at improving spatial resolution and retaining spectral resolution for multispectral(MS)image with an aided panchromatic(PAN)image.Most of the existing methods improve the spatial resolution of MS image by injecting spatial details acquired from the PAN image,which may lead to spectral distortion.This paper proposes a joint spectral-spatial pansharpening method.By exploiting the underlying spectral correlation between the PAN and MS images,a spectral-enhanced PAN(SPAN)image is produced.Then the detail of the SPAN image is injected into the MS image,which leads to a unified variational pansharpening model to obtain a fused image with both spatial structure-enhanced and spectral-preserved.Experiments on different datasets confirm the effectiveness of the proposed pansharpening method,es⁃pecially in the fidelity of spectra.

关 键 词：Pansharpening 多光谱图像 全色图像 光谱映射 细节注入 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]