A near-infrared binocular system for optical instrument tracking

Table 1. t^r threshold selection
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Table 1. t^r threshold selection
Threshold Number
0.400 8
0.300 7
0.226 7
0.225 6
0.224 6
0.200 6
0.100 6

Table 2. t^s threshold selection
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Table 2. t^s threshold selection
Threshold Number
0.012 4
0.011 4
0.010 3
0.009 3
0.008 3

Table 3. Types of instruments
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Table 3. Types of instruments
${{{L_1}} \mathord{\left/ {\vphantom {{{L_1}} {{L_2}}}} \right. } {{L_2}}}$ ${{{L_3}} \mathord{\left/ {\vphantom {{{L_3}} {{L_4}}}} \right. } {{L_4}}}$ Types of devices
> 1 > 1 A
< 1 < 1 B
> 1 < 1 C

Table 4. Time required for multiple instruments identification (Unit:ms)
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Table 4. Time required for multiple instruments identification (Unit:ms)
Number of instruments Four interfering light sources No interfering light sources
1 4 3
2 4.2 3.5
3 4.5 4

Table 5. Positioning accuracy test(Unit:mm)

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Table 5. Positioning accuracy test(Unit:mm)

Position	5 mm	10 mm	15 mm	20 mm
1	5.1087	10.3104	15.5100	20.5739
2	6.3136	10.6348	15.7608	20.8322
3	5.1060	10.0926	15.1268	20.3387
4	6.4282	12.4944	18.3975	23.2675
5	5.2923	10.4994	15.6380	20.8859
6	6.0823	11.6198	16.8552	22.4211
RMSE	0.6195	0.9252	1.2160	1.1768
MAE	0.5528	0.7435	0.9411	0.9718

Table 6. Dynamic tracking verification (Unit:mm)
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Table 6. Dynamic tracking verification (Unit:mm)
Distance True value Max error RMSE MAE
D16 70.5 0.4072 0.6184 0.5254
D14 70.7 0.1720 0.5205 0.4097
D24 100 1.0654 0.5765 0.4619

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Jie Wang, Chongliang Zhong, Weidong Zhu. A near-infrared binocular system for optical instrument tracking[J]. Infrared and Laser Engineering, 2022, 51(6): 20210517

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