一种结合结构与能量信息的全色与多光谱图像融合方法  

A Panchromatic and Multispectral Image Fusion Method Combining Energy and Structural Information

作　　者：宋加文 朱大明[1] 左小清[1] 付志涛 陈思静 SONG Jiawen;ZHU Daming;ZUO Xiaoqing;FU Zhitao;CHEN Sijing(Faculty of Land Resources Engineering,Kunming University of Science and Technology,Kumming 650093,China)

机构地区：[1]昆明理工大学国土资源工程学院,云南昆明650093

出　　处：《红外技术》2023年第7期696-704,共9页Infrared Technology

基　　金：国家自然科学基金(41961053);云南省重大科技专项(202202AD080010)。

摘　　要：分量替换是遥感图像融合中的一种经典方法,其具有良好的空间保真度,但容易产生光谱失真,为此本文提出一种结合结构与能量信息的全色与多光谱图像融合方法。方法首先通过超球面颜色空间变换分解多光谱图像的空间和光谱信息。其次,通过联合双边滤波引入了两层分解方案。然后,将全色图像和强度分量分解为结构层和能量层。最后,提出结构层通过邻域空间频率策略融合,强度分量的纯能量层用作预融合图像的能量层。强度分量定义颜色的强度,通过将预融合结构层与强度分量的能量层结合,可以有效地结合源图像的空间和光谱信息,从而减少全色锐化图像的光谱失真。本文在Pléiades和QuickBird数据集上进行大量实验,并对实验结果进行定性和定量分析,结果表明所提方法与现有先进方法相比具备一定优越性。Component substitution is a classical method for remote-sensing image fusion that has good spatial fidelity but is prone to spectral distortion.Therefore,a panchromatic and multispectral image fusion method that combines structural and energy information is proposed.First,the method decomposes the spatial and spectral information of multispectral images by hyperspherical color-space transformation.Second,a two-layer decomposition scheme is introduced through joint bilateral filtering.The panchromatic image and intensity components are then decomposed into structural and energy layers.Finally,the structural layer is fused by the neighborhood spatial frequency strategy,and the pure energy layer of the intensity component is used as the energy layer of the pre-fusion image.The intensity component defines the color intensity.By combining the pre-fused structural layer with the energy layer of the intensity component,the spatial and spectral information of the source image can be effectively combined,thereby reducing the spectral distortion of the pansharpened image.In this study,several experiments were conducted on the Pléiades and QuickBird datasets,and the experimental results were qualitatively and quantitatively analyzed.The results show that the proposed method has certain advantages over existing methods.

关 键 词：全色锐化 超球面色彩空间 联合双边滤波 空间频率 全色图像 多光谱图像 

分 类 号：TP751[自动化与计算机技术—检测技术与自动化装置]