摘要
针对偏振图像清晰化算法的偏振图像的时空同步性和图像数据的准确性的问题,以Stokes矢量检测原理为理论基础,设计了多通道的偏振探测器。采用同步调整机构用于稳像,使系统具有足够的刚度与可靠性,保证图像信息采集的精确性,同时也减少后续相机标定和配准的难度;采用4个通道平面圆周方向等角度分布的结构方式增加相邻相机间的交叉视场,克服传统多通道偏振探测器无法对近处景物进行探测的缺点;经实验表明:该设备对偏振角的测量精度为2. 03°(3σ),偏振度的测量精度为1. 41%(3σ),可较好地完成偏振图像的获取,保证了每组偏振图像的时空同步性,为雾霾降质图像清晰化算法提供可靠的图像数据。
Aiming at the problem of spatiotemporal synchronization of polarized images and the accuracy of image data of polarization image sharpening algorithm,a multi-channel polarization detector is designed,which is based on the stokes vector detection principle.Synchronous adjustment mechanism is used for image stabilization,which makes system has sufficient strength and reliability.This method ensures the accuracy of image information acquisition and reduces the difficulty of subsequent camera calibration and registration.The structure of four channels with equal angle distribution in the circumferential direction is adopted to overcome the disadvantage that the multi-channel polarization detector cannot detect the nearby scenery.According to the experiment,the measurement precision of the polarization angle of the device is 2.03°(3σ),and the measurement precision of the polarization degree is 1.41%(3σ).This device can well complete the acquisition of polarization images.The spatiotemporal synchronization of each group of polarized images is guaranteed by this device.This device provides reliable image data for the subsequent haze image sharpening algorithm.
作者
李荣华
朴俊峰
唐智超
褚清清
LI Ronghua;PIAO Junfeng;TANG Zhichao;CHU Qingqing(School of Mechanical Engineering,Dalian Jiao Tong University,Dalian 116028,China)
出处
《传感器与微系统》
CSCD
2020年第6期89-91,94,共4页
Transducer and Microsystem Technologies
基金
辽宁省自然科学基金资助项目(20180520015)
大连市高层次人才创新支持计划资助项目(2017RQ134)
辽宁省高等教育创新人才支持计划资助项目(LR2018050)。
关键词
偏振探测
视场
多通道
偏振度
polarization detection
field of view
multi-channel
polarization degree
