LED脉冲光源分时复用的光场相机成像技术研究  

Study on imaging technology of light field camera based on time division multiplexing of pulsed light source

作　　者：严赛美 刘吉[1,2] 武锦辉[2] 苏凝钢 司宇 牛雅昕 YAN Saimei;LIU Ji;WU Jinhui;SU Ninggang;SI Yu;NIU Yaxin(School of Information and Communications Engineering,North University of China,Taiyuan 030051,China;Science and Technology on Electronic Test and Measurement Laboratory,North University of China,Taiyuan 030051,China)

机构地区：[1]中北大学信息与通信工程学院,太原030051 [2]中北大学电子测试技术重点实验室,太原030051

出　　处：《兵器装备工程学报》2022年第3期300-304,共5页Journal of Ordnance Equipment Engineering

基　　金：山西回国留学人员科研资助项目(HGKY2019068);山西省自然科学基金(面上项目)(201901D111159)。

摘　　要：针对静爆场景深空间较大,破片速度快、尺寸小、分布范围大,传统成像法景深范围小,光场相机成像幅率低的问题,提出了一种在光场相机的单次曝光时间内,利用三基色高功率窄脉冲LED光源分时复用主动照明方法。后期通过MATLAB对所得图像进行处理,根据通道分量将图像解析为3幅不同时刻单色图像。搭建了测试平台,对运动的目标物进行了拍摄并处理,结果表明:光场成像幅率提高了3倍,解决了现有的设备成像幅率较低的技术问题。For static explosion scenes,the deep space is large,the fragmentation speed is fast,the size is small,and the distribution range is large,while the traditional imaging method has a small depth of field,and light field camera has low imaging rate.This paper proposed a time-division multiplexing active lighting method,during a single exposure time of light field camera,three-primary-color high-power narrow-pulse LED was used for time-sharing illumination.In the later stage,the obtained image was processed by MATLAB,and according to the channel component,the image was parsed into 3 monochrome images at different moments.A test platform was built,and the moving target was photographed and processed.The result shows that the light field imaging rate was increased by 3 times,and it solves the technical problem of the low rate of existing equipment.

关 键 词：爆炸场 光场相机 成像幅率 LED脉冲光源 分时复用照明 

分 类 号：TJ410.6[兵器科学与技术—火炮、自动武器与弹药工程]