高分光学影像多方向相位一致性局部配准模型  

A Local Registration Model based on Multidirectional Phase Congruency for High Resolution Optical Images

作　　者：艾文浩 李星华 AI Wenhao;LI Xinghua(School of Remote Sensing and Information Engineering,Wuhan University,Wuhan 430079,China)

机构地区：[1]武汉大学遥感信息工程学院,湖北武汉430079

出　　处：《遥感技术与应用》2025年第1期226-236,共11页Remote Sensing Technology and Application

基　　金：国家自然科学基金项目“云雾条件下光学与SAR影像联合深度学习变化检测研究”(42171302)。

摘　　要：高分光学影像易受到成像条件及地物变化等因素的影响,出现难以忽略的几何与辐射畸变,传统配准算法难以保证精度与稳定性。为此,本研究充分发挥相位一致性在影像几何结构表达上的优势,提出了一种基于多方向相位一致性的配准算法,利用Log-Gabor滤波器计算影像在不同方向上的相位一致性及其最小矩估计,进一步通过多阈值约束提取影像角点,并构建对辐射、旋转弱敏感的描述符,以实现复杂辐射、几何畸变场景下的同名特征匹配,最后利用匹配特征解算局部配准模型。基于高分一/二/六/七号影像的多组实验证明,所提出算法可以实现高精度配准,适用于不同来源、不同场景及不同分辨率的国产高分光学影像配准任务。High resolution optical images are susceptible to imaging conditions and changes in ground features,resulting in geometric and radiative distortions which are difficult to ignore.Traditional registration methods are difficult to ensure accuracy and stability.Therefore,this study fully utilizes the advantages of phase congruency in the geometric structure expression of images,proposes a registration algorithm based on multi-directional phase congruency,uses Log-Gabor filter to calculate the phase congruency and minimum moments of images in different directions,further extracts image corners through multi threshold constraints,and constructs descrip⁃tors that are weakly sensitive to radiation and rotation to achieve complex radiation Matching homonymous fea⁃tures in geometric distortion scenarios,and finally using matching features to solve local registration models.Multiple experiments based on GF-1/2/6/7 images have demonstrated that the proposed algorithm can achieve high-precision registration and is suitable for domestic high-resolution optical image registration tasks from dif⁃ferent sources,scenes,and resolutions.

关 键 词：几何配准 特征提取 特征描述 相位一致性 国产高分光学影像 

分 类 号：P237[天文地球—摄影测量与遥感]