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Calibration of Structured Light Scanning System

Yi Guo

Yi Guo

Centre for Information & Technology Xi’an Technological UniversityChina
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Guo, Yi
 e 
Xiaoyi Ruan

Xiaoyi Ruan

School of Computer Science and Engineering Xi’an Technological University Xi’anChina
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Ruan, Xiaoyi
  
21 feb 2022
Calibration of Structured Light Scanning System's Cover Image
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Pubblicato online: 21 feb 2022
Pagine: 56 - 64
DOI: https://doi.org/10.21307/ijanmc-2021-017
Parole chiave
© 2021 Yi Guo et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Figure 1.

The measurement system
The measurement system

Figure 2.

Schematic diagram of camera imaging
Schematic diagram of camera imaging

Figure 3.

Principle of camera imaging
Principle of camera imaging

Figure 4.

Camera distortion
Camera distortion

Figure 5.

Rasterization of the checkerboard calibration board
Rasterization of the checkerboard calibration board

Figure 6.

Design drawing of calibration board
Design drawing of calibration board

Figure 7.

The calibration process based on circular marking points
The calibration process based on circular marking points

Figure 8.

Main view of calibration board
Main view of calibration board

Figure 9.

Position relationship diagram between points and straight lines
Position relationship diagram between points and straight lines

Figure 10.

Automatic matching of marking points at different angles
Automatic matching of marking points at different angles

THE BACK PROJECTION ERROR RESULTS OF THE ALGORITHM

Group ea em
1 0.191 0.650
2 0.177 0.801
3 0.266 0.502

MEASUREMENT INFORMATION OF DENTAL MODEL (UNIT: MM)

Name Average measurement result of this system Measurement standard deviation LJ-V7000measurement results
Arch length 63.87 0.10 63.91
Arch width 58.02 0.12 58.03
41 teeth 5.58 0.12 5.63
42 teeth 6.52 0.09 6.45
43 teeth 7.28 0.11 7.32
44 teeth 7.89 0.17 7.89
45 teeth 7.48 0.06 7.46
46 teeth 11.00 0.07 10.97
31 teeth 5.41 0.08 5.41
32 teeth 6.39 0.10 6.31
33 teeth 6.98 0.07 7.06
34 teeth 7.79 0.12 7.76
35 teeth 7.45 0.07 7.43
36 teeth 11.05 0.13 10.95

BACK-PROJECTION ERROR RESULTS OF ZHANG'S CALIBRATION METHOD

Group ea e m
1 0.613 1.124
2 0.691 2.316
3 0.827 1.528
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