透过散射层对运动三维物体的单次曝光录像  

Single-Shot Video of Three-Dimensional Moving Objects Through Scattering Layers

作　　者：施瑶瑶 刘友文[2] 盛伟[2] 路元刚[1] 吴彤 赫崇君 Yaoyao Shi;Youwen Liu;Wei Sheng;Yuangang Lu;Tong Wu;Chongjun He(Academy of Astronautics,Nanjing University of Aeronautics and Astronautics,Nanjing,Jiangsu 210016,China;College of Science,Nanjing University of Aeronautics and Astronautics,Nanjing,Jiangsu 210016,China;Key Laboratory of Space Photoelectric Detection and Perception,Ministry of Industry and Information Technology,Nanjing University of Aeronautics and Astronautics,Nanjing,Jiangsu 210016,China)

机构地区：[1]南京航空航天大学航天学院,江苏南京210016 [2]南京航空航天大学理学院,江苏南京210016 [3]南京航空航天大学空间光电探测与感知工业和信息化部重点实验室,江苏南京210016

出　　处：《光学学报》2020年第22期101-107,共7页Acta Optica Sinica

基　　金：南京航空航天大学空间光电探测与感知工业和信息化重点实验室开放课题资助(NJ2020021-8);中央高校基本科研业务费资助(NJ2020021);南京航空航天大学新教师工作启动基金(1011-YAH20039)。

摘　　要：透过散射介质成像在很多领域都有重要应用。然而,目前关于针对三维运动物体的透过散射介质成像与追踪的研究却很少。提出一种透过散射层对运动三维物体进行单次曝光录像的方法。从散射层两个不同位置出射的散斑之间非相关且包含了双视角下的物体信息,在这两部分散斑的重叠区域进行探测,可实现三维成像。在曝光过程中绕光轴旋转相机,可探测到由一系列旋转不同角度后的瞬时散斑叠加而成的一张散斑图像。在满足散斑旋转去相关的条件下,这些瞬时散斑之间非相关。至此,对应不同时刻、不同视角的一系列瞬时散斑多路复用于一张散斑图像中。利用互相关解卷积成像法,通过依次旋转各个单视角下探测的点扩展函数,即可从这张散斑图像中重建出三维运动物体的视频信息。Imaging through scattering media has important applications in many fields.However,there are few studies on imaging and tracking of three-dimensional(3D)moving objects through scattering media.In this paper,a method of single-shot videoing for 3D moving objects through scattering layers is proposed.The speckles emitted from two different positions of the scattering layer are uncorrelated and contain the object information under dual view angles.Detecting in the overlapping area of the two parts of the speckles can realize 3D imaging.By rotating the camera around the optical axis during the exposure process,a speckle image consists of a series of momentary speckles with different rotation angles can be detected.With the speckle rotation decorrelation property,these momentary speckles are uncorrelated with each other.Thus,a series of momentary speckles corresponding to different moments and different view angles are multiplexed in a speckle image.Using the cross-correlation deconvolution imaging method,the video information of the 3D moving objects can be reconstructed from this speckle image by rotating the point spread function detected in each single view.

关 键 词：成像系统 散斑成像 散斑非相关 三维成像 运动物体追踪成像 散斑多路复用 

分 类 号：O438.2[机械工程—光学工程]