摘要
针对传统偏振成像技术机械振动大、系统不稳定的问题,提出了一种基于Stokes矢量的双相机偏振成像技术,在液晶驱动控制器的作用下,驱动2个液晶可调相位延迟器(LCVR)进行柔性调制,利用相机采集目标的偏振图像,进一步得到Stokes矢量的分量图像,解算出偏振度、偏振角图像。该方法利用双相机同时成像技术,解决了单相机采集信息不完整的问题,可以实现完全Stokes测量,同时获得目标的线偏振和圆偏振图像。实验结果表明,偏振度(Dop)图像相较于线偏振度(Dolp)图像,包含了更多的细节信息,Dop图像在图像评价指标方面均有5%以上的提升,说明Dop图像可以更好地还原被测目标物。采用该方法可以提高对静态目标的识别能力。
The traditional polarization imaging technology has large mechanical vibration and the system is unstable.To solve the problemsa dual-camera polarization imaging technology based on Stokes vector is proposed.Under the action of a liquid-crystal drive controllertwo Liquid Crystal Variable Retarders(LCVR)are driven to perform flexible modulationthe cameras are used to collect the polarized image of the targetthus the component image of the Stokes vector is obtainedand the images of polarization degree and polarization angle are calculated.The method uses dual-camera simultaneous imaging technology and avoids the problem that the information collected by a single camera is incomplete.The method can realize full Stokes measurement and obtain linear and circular polarization images of the target at the same time.Experimental results show that the polarization degree(Dop)image contains more detailed information than the linear polarization degree(Dolp)imageand has an improvement of more than 5%in the image evaluation indexesindicating that the Dop image can better restore the measured target.Using this method can improve the ability to identify static targets.
作者
杨威
王晓曼
石林
赵海丽
YANG Wei;WANG Xiaoman;SHI Lin;ZHAO Haili(School of Electronics and Information Engineering Changchun University of Science and Technology Changchun 130000,China)
出处
《电光与控制》
CSCD
北大核心
2021年第6期72-75,89,共5页
Electronics Optics & Control
基金
吉林省科技厅科技创新平台项目(KYC-JC-XM-2017-044)
吉林省发改委产业创新专项(KYC-JC-XM-2019-062)。
