Ziyong Ma, Fuquan Zhang, Lidong Ma, Hechen Ma, Jiahao Hang. Line-Structured Light Based Micro-Irregular Component Geometric Dimension Measurement Method[J]. Laser & Optoelectronics Progress, 2023, 60(15): 1512001
- Laser & Optoelectronics Progress
- Vol. 60, Issue 15, 1512001 (2023)
Fig. 1. Composition of the measuring system
Fig. 2. Image of profile of micro irregular component
Fig. 3. Camera imaging model
Fig. 4. Line-structured light. (a) Original image of line-structured light; (b) Steger thinning image of line-structured light
Fig. 5. Mathematical model of line-structured light
Fig. 6. Selection of central feature points of line-structured light
Fig. 7. Least square fitting plane
Fig. 8. Distance between fitting points and line-structured light plane
Fig. 9. Height measurement of different gauge blocks. (a) Original heights; (b) height measurements; (c) standard deviations of repeated measurement error in height
Fig. 10. Width measurement of different gauge blocks. (a) Original widths; (b) width measurements; (c) standard deviations of repeated measurement error in width
Fig. 11. Measurement test of No. 1 micro irregular component. (a) Original image of the component; (b) position of geometric points; (c) dimension measurement of different parts of the component; (d) geometric dimension error of the component
Fig. 12. Measurement test of No. 2 micro irregular component. (a) Original image of the component; (b) position image of geometric points; (c) dimension measurement of different parts of the component; (d) geometric dimension error of the component
Fig. 13. Measurement test of No. 3 micro irregular component. (a) Original image of the component; (b) position image of geometric points; (c) dimension measurement of different parts of the component; (d) geometric dimension error of the component
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Table 1. Internal parameters of industrial camera
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Table 2. Plane equation coefficients of line-structured light
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Table 3. Fitting accuracy evaluation of line-structured light plane
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Table 4. Actual thickness value of eleven gauge blocks
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Table 5. Comparison of maximum measurement error of gauge blocks
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