基于偏振特征重构的海面耀光抑制方法研究  

Sea surface glint suppression method based on polarization feature reconstruction

作　　者：宋明珠 郭蓉 李立洲 陶淑苹[2] 陈彦彤 王俊生[1] SONG Ming-zhu;GUO Rong;LI Li-zhou;TAO Shu-ping;CHEN Yan-tong;WANG Jun-sheng(Department of Information Science and Technology,Dalian Maritime University,Dalian 116026,China;Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China)

机构地区：[1]大连海事大学信息科学技术学院,辽宁大连116026 [2]中国科学院长春光学精密机械与物理研究所,吉林长春130033

出　　处：《中国光学（中英文）》2024年第6期1297-1306,共10页Chinese Optics

基　　金：国家自然科学基金(No.62205046,No.62075219,No.52171343);吉林省科技发展计划项目(No.20220201076GX);中央高校基本科研业务费专项资金资助(No.3132023230,No.3132023506);大连市青年科技之星项目(No.2023RQ021)。

摘　　要：太阳耀光是海面目标探测过程中的重要影响因素,本文针对陆地观测平台,利用耀光的偏振特性,提出一种基于线偏振图像共有成分与特征成分重构的海面耀光抑制方法。该方法利用分焦平面偏振相机获取四通道线偏振辐射图像,计算场景的偏振度信息,生成耀光抑制图像。在以偏振信息抑制场景耀光的基础上,结合线偏振辐射图像的特点,将耀光抑制辐射图像的光强分量分解为共有成分与特征成分,重新赋予二者新的权重因子得到重构后的耀光抑制图像。外场偏振实验的结果表明,在3组典型实验数据中,重构耀光抑制图像相比于光强图像的饱和像素占比最多降低79.07%,空间频率与对比度提升可达73.77%和172.73%。本文所提方法有效抑制了海面场景中的耀光噪声且在背景细节信息恢复方面具有良好表现。Sun glint is a significant factor influencing sea surface target detection.For land observation platforms,a sea surface glint suppression method based on the reconstruction of common and feature components of linearly polarized images is proposed using the polarization characteristics of glints.We use a focal plane polarization camera to obtain four-channel linear polarized images,calculate the scene’s polarization information,and generate a glint suppression image.Based on suppressing scene glint with polarization information combined with the characteristics of linear polarization images,the light intensity components of the glint suppression image are decomposed into common and characteristic components,and new weight factors are reassigned to obtain the reconstructed glint suppression image.The glint polarization imaging experiments show that in the three sets of typical experimental data,the proportion of saturated pixels in the reconstructed glint suppressed image is decreased by up 79.07%.Compared to the intensity image,and the spatial frequency and contrast are increased by up to 73.77%and 172.73%,respectively.The method proposed in this paper effectively suppresses the glint noise in the sea scene and performs well in restoring background detail information.

关 键 词：海面耀光 干扰抑制 偏振成像 偏振重构 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]