Acta Optica Sinica, Volume. 37, Issue 7, 712001(2017)
Real-Time Loss Measurement of Reflecting Mirrors Applied in Plasma Environment
Figures & Tables(11)
Fig. 4. (a) Lens distortion model in imaging processing; (b) diagram of distortion distribution
Fig. 6. (a-c) Images of laser points from three directions and (d-f) of sub-pixel light spot center distribution
Table 1. Calibration results of measurement system
View tableTable 1. Calibration results of measurement system
Category Principle point /pixel Focal length /pixel Distortion coefficient /pixel-2 Re-projection error /pixel Intrinsic parameters ( u 0,v 0)=(813.249, 617.416) ( fx ,fy )=(1849.169, 1848.517) ( k 1,k 2)=(-0.001763, 0.002371)( p 1,p 2)=(0.001156, 0.001922)0.0718 Structural parameters l 1:(a 1,b 1,c 1)=(65.131,30.224,1.717); (A 1,B 1,C 1)=(-10.258,-5.365,30.106)l 2:(a 2,b 2,c 2)=(51.678,-33.161,2.554); (A 2,B 2,C 2)=(-10.380,6.331,29.887)l 3:(a 3,b 3,c 3)=(-20.443,7.339,0.170); (A 3,B 3,C 3)=(4.548,-5.372,31.671)
Table 2. Average relative displacement of four feature points obtained by different methods
View tableTable 2. Average relative displacement of four feature points obtained by different methods
Method Average relative displacement /mm IPC 0.034 0.067 0.099 0.134 0.167 0.201 0.233 UIPC 0.034 0.065 0.098 0.129 0.160 0.191 0.221 LPM 0.033 0.065 0.097 0.130 0.161 0.192 0.221 CLPM 0.033 0.067 0.100 0.134 0.166 0.200 0.232 PMM 0.034 0.068 0.101 0.135 0.168 0.201 0.234
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Zhai Liang, Wang Tao, Bai Manshe, Zuo Yijuan, Su Yu, Liu Xin, Chen Jing, Zhu Liangjian. Real-Time Loss Measurement of Reflecting Mirrors Applied in Plasma Environment[J]. Acta Optica Sinica, 2017, 37(7): 712001
Paper Information
Category: Instrumentation, Measurement and Metrology
Received: Jan. 4, 2017
Accepted: --
Published Online: Jul. 10, 2017
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