合成孔径雷达三维成像中的视觉语义浅析  

A Note on Visual Semantics in SAR 3D Imaging

作　　者：胡占义[1] HU Zhanyi(National Laboratory of Pattern Recognition,Institute of Automation,Chinese Academy of Sciences,Beijing 100190,China)

机构地区：[1]中国科学院自动化研究所模式识别国家重点实验室,北京100190

出　　处：《雷达学报（中英文）》2022年第1期20-26,共7页Journal of Radars

基　　金：国家自然科学基金(61991423,61772444)。

摘　　要："合成孔径雷达微波视觉三维成像",从概念上说,旨在将"视觉语义"引入到合成孔径雷达的成像模型中,以期提高三维成像的质量。对层析合成孔径雷达(TomoSAR)来说,"视觉语义"的引入可望有效减少TomoSAR所需的观测次数。然而,什么是"视觉语义"?从视觉感知的途径看,"单眼"和"双眼"均可以从场景感知三维结构信息;从场景内容看,不同的人对同一幅图像会有不同感受;从视觉神经加工机理看,三维信息加工和二维信息加工也存在一些本质差异。另外,人类视觉感知普遍存在错觉(illusion)现象。那么,到底什么类型的"视觉语义信息"可望在计算的层次上有助于微波三维成像呢?如何借鉴计算机视觉的理论和方法来提取微波三维成像中有用的"视觉语义"信息呢?该文对这些问题进行了一些初步探讨。Conceptually speaking,Synthetic Aperture Radar(SAR)microwave vision 3D imaging refers to fusing visual semantics into the SAR 3D imaging process to enhance the 3D imaging quality.For SAR Tomography(TomoSAR),it specifically means to reduce the needed observations by fully exploiting SAR visual semantics.However,what does it mean by visual semantics?From the viewpoint of visual perception,3D structural information could be perceived from either monocular image or binocular images and the same scene could be perceived differently by different people.From the viewpoint of neurophysiology,depth perception from binocular or monocular vision has fundamentally different mechanism.Besides visual illusion phenomenon is omnipresent in daily life.Hence what kinds of visual semantics could be helpful for SAR 3D imaging from the computational point of view?What could be learnt from computer vision community to extract useful visual semantics from SAR images?This short note presents some preliminary discussions on such issues,a purely personal view on such vast topics.

关 键 词：视觉通道 微波视觉 层析SAR 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]