Lijun Sun, Qiangqiang Guo, Tianfei Chen. Nonmetric Correction Method for Lens Distortion Based on Collinear Vanishing Point Constraint[J]. Acta Optica Sinica, 2022, 42(23): 2312004
- Acta Optica Sinica
- Vol. 42, Issue 23, 2312004 (2022)
Fig. 1. Radial distortion. (a) Ideal image with no distortion; (b) pin-cushion distortion; (c) barrel distortion
Fig. 2. Schematic of vanishing point
Fig. 3. Target diagrams. (a) Target diagram on space plane; (b) target projection and vanishing point schematic on image plane
Fig. 4. Specific steps of proposed method
Fig. 5. Original images of checkerboard targets. (a) Image 1; (b) image 2; (c) image 3
Fig. 6. Corrected images using proposed method. (a) Image 1; (b) image 2; (c) image 3
Fig. 7. Comparison of distorted-point and corrected-point. (a) Image 1; (b) image 2; (c) image 3
Fig. 8. Feature point selection. (a) An image of a chessboard; (b) detected grid (select the red dot of each line to calculate the CR of the line)
Fig. 9. Comparison of ASE
Fig. 10. Comparison of distortion correction results by different methods. (a) Image 1; (b) image 2; (c) image 3
Fig. 11. Comparison of correction effect (CR). (a) Image 1; (b) image 2; (c) image 3
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Table 1. Comparison of CR
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Table 2. Coefficients of distortion model
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Table 3. Comparison of ASE
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