复杂目标的单光子三维成像数据模拟方法  

A Single Photon 3D Imaging Data Simulation Method for Complex Targets

作　　者：郑素珍[1] 陈普春[1] Zheng Suzhen;Chen Puchun(College of Sciences,Southwest Petroleum University,Chengdu 610500,Sichuan,China)

机构地区：[1]西南石油大学理学院,四川成都610500

出　　处：《应用激光》2024年第1期134-143,共10页Applied Laser

基　　金：国家自然科学基金项目(11804285);四川省自然科学基金项目(2022NSFSC0884)。

摘　　要：单光子计数探测技术因其高灵敏度已成为三维成像领域的重要发展方向。复杂目标因其结构多样和特征丰富成为重要研究对象,但其光子成像响应机制复杂,难以用简单模型进行特征分析。针对复杂目标的特征分析需求,提出了基于三维模型的单光子三维成像数据模拟方法,以典型雪崩光电二极管(APD)单光子探测器阵列为基础,结合单光子三维成像探测模型,提出以复杂目标3D结构模型为基础的单光子探测数据模拟方法。首先建立目标本体坐标系并根据仿射变换模型将3D结构定点变换到成像坐标系,然后根据成像关系将视场内不同分辨单元划分为背景单元、前景单元、目标单元和噪声单元,并按照光子数泊松分布模型对不同单元生成原始光子数据,最后通过多帧积累形成三维点云图像。通过计算机仿真,模拟典型民航目标的单光子三维成像探测数据,为开展目标的三维测量和结构特征分析提供理论和数据依据。Single photon counting detection technology has become an important development direction in the field of 3D imaging because of its high sensitivity.Complex targets have become important research objects because of their diverse structures and rich features,but their response mechanism of photon imaging is too complex to be analyzed by simple models.In this paper,a single photon 3D imaging data simulation method based on 3D model is proposed for the feature analysis of complex targets.Based on the typical Avalanche Photodiodes(APD) single photon detector array,combined with the single photon 3D imaging detection model,a single photon detection data simulation method based on 3D structure model of complex target is proposed.Firstly,the object body coordinate system was established and the 3D structure was transformed to the imaging coordinate system at fixed point according to the affine transformation model.Then,according to the imaging relationship,the different resolution units in the field of view were divided into background units,foreground units,target units and noise units.The original photon data was generated for different units according to the photon number Poisson distribution model.Through computer simulation,the method is applied to simulate single photon 3D imaging detection data of typical civil aviation targets,laying a theoretical and data foundation for 3D measurement and structural characteristic analysis of targets.

关 键 词：单光子探测 三维成像数据 复杂目标 模拟 

分 类 号：TN248.1[电子电信—物理电子学]