Min Zhao, Xiaogang Li, Zepeng Su, Lingjian Zhu. Camera Parameter Calibration Based on Directional Layered Target[J]. Acta Optica Sinica, 2022, 42(16): 1612004
- Acta Optica Sinica
- Vol. 42, Issue 16, 1612004 (2022)
Fig. 1. Pinhole imaging model
Fig. 2. Results of camera calibration by using target with different sizes. (a) Focal length; (b) horizontal coordinates of principal points
Fig. 3. Results of focal length calibration by using different number of targets
Fig. 4. Results of camera calibration with complete and incomplete targets. (a) Focal length; (b) horizontal coordinates of principal points
Fig. 5. Directional layered target
Fig. 6. Flow chart of target recognition and matching algorithm
Fig. 7. Numbering sequence of targets
Fig. 8. Identification and matching of directional targets. (a) Sketch of combined coordinate system; (b) marker map of target matching on axis
Fig. 9. Target matching for partial target deficiency. (a) Experimental picture I; (b) matching result of experimental picture I; (c) experimental picture II; (d) matching result of experimental picture II
Fig. 10. Experimental pictures of camera calibration. (a) Small view (groups 1 and 2); (b) large view (groups 3 and 4)
Fig. 11. Distributions of reprojection error. (a) Group 1; (b) group 2; (c) group 3; (d) group 4
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Table 1. Standard error of calibration results of camera parameters under different target sizes
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Table 2. Standard error of calibration results of camera parameters under different number of targets
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Table 3. Standard error of calibration results of camera parameters for complete and incomplete targets
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Table 4. Results of camera parameter calibration
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Table 5. Results of camera calibration and measurement
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