Huijie Liu, Geni Mamtimin, Tohti Gulbahar, Ahmat Yakup, Quanzhong Zhang. Design and Identification of Cooperative Coded Targets[J]. Laser & Optoelectronics Progress, 2021, 58(12): 1210015
- Laser & Optoelectronics Progress
- Vol. 58, Issue 12, 1210015 (2021)
Fig. 1. Partly coded logo design drawing. (a) 1-A-100; (b) 1-A-010; (c) 1-A-001; (d) 1-A-110; (e) 1-A-101; (f) 1-A-011; (g) 1-A-111
Fig. 2. Coding logo design for number 2 and letter B. (a) 2-B-100; (b) 2-B-010; (c) 2-B-001; (d) 2-B-110; (e) 2-B-101; (f) 2-B-011; (g) 2-B-111
Fig. 3. Schematic of Gaussian filter
Fig. 4. Original image of coded symbol
Fig. 5. Division of coding mark area
Fig. 6. Three-layer network structure of different parts. (a) Numerical part; (b) alphabetical part
Fig. 7. Positioning accuracy curve of different number of measuring points
Fig. 8. Diagram of camera reprojection error distribution
Fig. 9. Spatial pose relation between camera and calibration plate
Fig. 10. Original image with 20 coded targets
Fig. 11. Image after mirror restoration
Fig. 12. Image after image grayscale inverse transformation
Fig. 13. Image after image enhancement
Fig. 14. Segmentation and recognition results of coded symbol characters
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Table 1. Comparison of simulation results
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Table 2. Internal parameters calibrated by camera
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