非共轴四通道偏振成像方法研究
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摘要
针对当前偏振成像方法的实时性不好、能量利用率低以及分辨率不高等问题,提出了一种非共轴四通道偏振成像方法。该方法通过4个通道采集不同偏振方向的图像来融合计算偏振度图像。数值仿真分析了影响系统偏振成像结果的通道间距、通道平行度和偏振片检偏角度误差,得出了满足偏振成像精度达到1%的系统参数容限。在实验研究方面,研制出了非共轴四通道的偏振成像系统,并对室外距离约为50m的车辆进行了实验。实验证明了该系统可以有效地对目标进行偏振成像。
The current polarization imaging method has the problems of poor real-time performance,low energy utilization rate and low resolution.We proposed a four-channel polarization imaging method of non-coaxial type.The method used four channels to acquire images of different polarization directions to fuse the degree of polarization image.After that,we simulated parameters such as channel spacing,channel parallelism and polarization detection angle error affecting the polarization imaging results of the system,and gave the parameter tolerance meeting the polarization imaging accuracy of 1%.Furthermore,we developed a four-channel polarization imaging system of non-coaxial type,and conducted the experiment for vehicles 50 maway outdoors.The experimental results verify that the system can effectively provide the polarization imaging for target.
The current polarization imaging method has the problems of poor real-time performance,low energy utilization rate and low resolution.We proposed a four-channel polarization imaging method of non-coaxial type.The method used four channels to acquire images of different polarization directions to fuse the degree of polarization image.After that,we simulated parameters such as channel spacing,channel parallelism and polarization detection angle error affecting the polarization imaging results of the system,and gave the parameter tolerance meeting the polarization imaging accuracy of 1%.Furthermore,we developed a four-channel polarization imaging system of non-coaxial type,and conducted the experiment for vehicles 50 maway outdoors.The experimental results verify that the system can effectively provide the polarization imaging for target.
引文
[1]KRISTAN G, MELVIN F,ROBERT M,et al.MidIR and LWIR polarimetric sensor comparisonstudy[C].Florida:Proceedings of SPIE,2010:1-14.
[2]BAI Sike,DUAN Jin,LU Yizhuo,et al.Experi-mental study on polarization imaging characteristicsof various materials[J].Journal of Applied Optics,2016,37(4):510-516.白思克,段锦,鲁一倬,等.不同材质的偏振成像特性实验研究[J].应用光学,2016,37(4):510-516.
[3]SCOT J T,DENNIS L G,DAVID B C,et al.Re-view of passive imaging polarimetry for remote sens-ing applications[J].Applied Optics,2006,45(22):5453-5469.
[4]ZHAO X,BERMAK A,BOUSSAID F,et al.Liq-uid-crystal micropolarimeter array for full stokes po-larization imaging in visible spectrum[J].Optics Ex-press,2010,17(18):17776-17787.
[5]GOLDSTEIN D.Polarized Light[M].New York:Marcel Dekker,Inc.2003.
[6]RU Zhibing,LIU Bing,LI Shuangquan,et al.De-sigh and experiment for polarization imaging systemof low-light-level image intensifier[J].Journal of Ap-plied Optics,2015,36(3):435-441.茹志兵,刘冰,李双全,等.基于微光像增强器的偏振成像系统设计与实验[J].应用光学,2015,36(3):435-441.
[7]JI Eryou,GU Guohua,BAI Lianfa,et al.Three-channel polarization imaging system and system errorcorrection method[J].Acta Photonica Sinica,2014(1):98-103.季尔优,顾国华,柏连发,等.三通道偏振成像系统及系统误差校正方法[J].光子学报,2014(1):98-103.
[8]SHELL J R.Polarimetric remote sensing in the visi-ble to near infrared[D].Rochestre:Rochester Insti-tute of Technology,2005:10-14.
[9]YANG Changjiu,LI Shuang,QIU Zhenwei,et al.Study on image registration of simultaneous imagingpolarization system[J].Infrared and Laser Engineer-ing,2013,42(1):262-267.杨长久,李双,裘桢炜,等.同时偏振成像探测系统的偏振图像配准研究[J].红外与激光工程,2013,42(1):262-267.
[10]LI Zhengqiang,LUC B,THIERRY P,et al.Cali-bration of the degree of linear polarization measure-ment of polarized radiometer using solar light[J].Applied Optics,2010,49(8):1249-1256.
[11]TOMINAGA S,KADOI H,HIRAI K,et al.Metal-dielectric object classification by combining polariza-tion property and surface spectral reflectance[J].SPIE,2013,8652:8652.
[2]BAI Sike,DUAN Jin,LU Yizhuo,et al.Experi-mental study on polarization imaging characteristicsof various materials[J].Journal of Applied Optics,2016,37(4):510-516.白思克,段锦,鲁一倬,等.不同材质的偏振成像特性实验研究[J].应用光学,2016,37(4):510-516.
[3]SCOT J T,DENNIS L G,DAVID B C,et al.Re-view of passive imaging polarimetry for remote sens-ing applications[J].Applied Optics,2006,45(22):5453-5469.
[4]ZHAO X,BERMAK A,BOUSSAID F,et al.Liq-uid-crystal micropolarimeter array for full stokes po-larization imaging in visible spectrum[J].Optics Ex-press,2010,17(18):17776-17787.
[5]GOLDSTEIN D.Polarized Light[M].New York:Marcel Dekker,Inc.2003.
[6]RU Zhibing,LIU Bing,LI Shuangquan,et al.De-sigh and experiment for polarization imaging systemof low-light-level image intensifier[J].Journal of Ap-plied Optics,2015,36(3):435-441.茹志兵,刘冰,李双全,等.基于微光像增强器的偏振成像系统设计与实验[J].应用光学,2015,36(3):435-441.
[7]JI Eryou,GU Guohua,BAI Lianfa,et al.Three-channel polarization imaging system and system errorcorrection method[J].Acta Photonica Sinica,2014(1):98-103.季尔优,顾国华,柏连发,等.三通道偏振成像系统及系统误差校正方法[J].光子学报,2014(1):98-103.
[8]SHELL J R.Polarimetric remote sensing in the visi-ble to near infrared[D].Rochestre:Rochester Insti-tute of Technology,2005:10-14.
[9]YANG Changjiu,LI Shuang,QIU Zhenwei,et al.Study on image registration of simultaneous imagingpolarization system[J].Infrared and Laser Engineer-ing,2013,42(1):262-267.杨长久,李双,裘桢炜,等.同时偏振成像探测系统的偏振图像配准研究[J].红外与激光工程,2013,42(1):262-267.
[10]LI Zhengqiang,LUC B,THIERRY P,et al.Cali-bration of the degree of linear polarization measure-ment of polarized radiometer using solar light[J].Applied Optics,2010,49(8):1249-1256.
[11]TOMINAGA S,KADOI H,HIRAI K,et al.Metal-dielectric object classification by combining polariza-tion property and surface spectral reflectance[J].SPIE,2013,8652:8652.