Qinghua Wu, Yang Zhou, Ziqi Li, Qiongjiesi Cai, Cai Wan. Extracting Method for Light Strip Center of Linear Structural Light Based on Dual Frequency Curve Fitting[J]. Laser & Optoelectronics Progress, 2020, 57(14): 141502
- Laser & Optoelectronics Progress
- Vol. 57, Issue 14, 141502 (2020)
Fig. 1. Light intensity gray value in the normal direction of the light stripe. (a) Gray value; (b) spectrogram
Fig. 2. Angle classification diagram of fitting straight line
Fig. 3. Light stripe normal direction extracting result of linear structural light
Fig. 4. Results of light strip center extraction
Fig. 5. Fitting results of various methods
Fig. 6. Images of linear laser strips for different materials. (a) Board; (b) rubber; (c) paper board; (d) copper pipe; (e) ceramic cover; (f) rust iron
Fig. 7. Light streaks on the surface of copper tube taken at different exposure time. (a) 700 μs; (b) 4700 μs; (c) 9200 μs; (d) 17200 μs
Fig. 8. RMSE of light fringe center position for three extraction methods under different exposure time
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Table 1. Evaluation of the results of four fitting curves
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Table 2. Results of stripe center extraction
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Table 3. Results of stripe center extraction for different materials
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