Wenbo Jing, Xuefeng Gao, Bingkun Huang, Shitao Li, Hongyang Yu. Expansion of Conical Catadioptric Panoramic Image of Inner Surface of Cylindrical Objects[J]. Acta Optica Sinica, 2021, 41(3): 0311002
- Acta Optica Sinica
- Vol. 41, Issue 3, 0311002 (2021)
Fig. 1. Schematic of the projection model of the cone of point M. (a) Forward model; (b) reverse model
Fig. 2. Expansion process of panoramic image of the bidirectional projection
Fig. 3. Simulation results of bidirectional projection model. (a) Forward model; (b) reverse model
Fig. 4. Simulation results of panoramic image expansion. (a) Panoramic image; (b) proportionally distorted cylindrical panoramic image; (c) corrected cylindrical panoramic image; (d) ideal cylindrical panoramic image
Fig. 5. Results of reverse projection model pixel positioning error. (a) 1--140 pixel; (b) 140--280 pixel
Fig. 6. Results of forward projection model pixel positioning error. (a) 1--150 pixel; (b) 150--300 pixel
Fig. 7. Image acquisition device and result graph. (a) Diagram of experimental platform; (b) panoramic image
Fig. 8. Comparison of calibration paper panoramic image expansion results. (a) Approximate expansion method of concentric rings; (b) expansion method under conical bidirectional projection model
Fig. 9. Comparison of local details. (a) Calibration paper image; (b) approximate expansion result of concentric rings; (c) expansion result under conical bidirectional projection model
Fig. 10. Comparison chart of barrel panoramic image expansion results. (a) Approximate expansion result of concentric rings; (b) expansion result under conical bidirectional projection model
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Table 1. Related parameters of cone panoramic imaging system
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Table 2. Data of experimental results of different expansion methods
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