Yuting Su, Changfei Yan, Jing Liu. Restoring 3D Cylindrically Distorted QR Code Based on Perspective Transformation[J]. Laser & Optoelectronics Progress, 2021, 58(8): 0810015
- Laser & Optoelectronics Progress
- Vol. 58, Issue 8, 0810015 (2021)
Fig. 1. Overall network framework
Fig. 2. Structure of finder pattern of QR code
Fig. 3. Illustration of transformation from pixel coordinate system to world coordinate system
Fig. 4. Illustration of transformation from image coordinate system to camera coordinate system
Fig. 5. Illustration of geometric relationship between hyper-parameters
Fig. 6. Effects of Z on coordinate value changing under different coordinate systems when the input point is (212,266)
Fig. 7. Restored images with the mixed distortions
Fig. 8. Comparison of recognition rate of different cylindrical restoration algorithms
Fig. 9. Qualitative comparisons of different cylindrical restoration algorithms
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Table 1. Comparison of the remaining number of connected domains after different preprocessing operations
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