Wenjie Li, Haiwang Wang, Tuanxing Li, Zonghui Zhang, Shichao Deng, Zhengdong Tan, Xingyu Gao. Parallel Line Fitting Based Size Measurement for Shaft Parts in Visual Measurement[J]. Laser & Optoelectronics Progress, 2022, 59(10): 1015013
- Laser & Optoelectronics Progress
- Vol. 59, Issue 10, 1015013 (2022)
Fig. 1. Template matching graph. (a) Target image to be matched; (b) template image
Fig. 2. Schematic of matching principle
Fig. 3. Schematic diagram of sub pixel edge points
Fig. 4. Pixel edge and subpixel edge. (a) Pixel edge; (b) subpixel edge
Fig. 5. Data points of each line selected by Ransac algorithm. (a) Interior point calculation; (b) threshold value calculation
Fig. 6. Parallel line fitting results
Fig. 7. Edge simulation. (a) Simulation experiment result 1; (b) simulation experiment result 2
Fig. 8. Schematic of calculating the distance between two straight lines by traditional method
Fig. 9. Comparison of two methods for measuring distance
Fig. 10. Diagram of axle segments. (a) Axle segment a; (b) axle segment b; (c) axle segment c; (d) axle segment d
Fig. 11. Measurement device
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Table 1. Partial measurement data of two methods
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Table 2. Parameters of experimental devices
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Table 3. Experimental measurement results
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Table 4. Repetitive experiment results
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