Image Distortion Correction of Flash Camera Systems Based on Field-of-View Division Model

Yuhang Ren; Binkang Li; Errui Zhou; Shaohua Yang; Ming Yan; Ming'an Guo; Gang Li; Lu Liu; Jing Wang; Mingyue Shi

doi:10.3788/LOP240627

Laser & Optoelectronics Progress, Volume. 61, Issue 24, 2411001(2024)

Image Distortion Correction of Flash Camera Systems Based on Field-of-View Division Model

Yuhang Ren¹, Binkang Li^1,2、*, Errui Zhou², Shaohua Yang², Ming Yan², Ming'an Guo², Gang Li², Lu Liu², Jing Wang², and Mingyue Shi²

Author Affiliations

¹School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, Shaanxi , China

²National Key Laboratory of Intense Pulsed Radiation Simulation and Effect, Northwest Institute of Nuclear Technology, Xi'an 710024, Shaanxi , China

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Figures & Tables(14)

Fig. 1. (a) Len radial distortion diagram; (b) optical cone distortion diagram

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Fig. 2. Variable step size field-of-view division method correction flow chart

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Fig. 3. Variable step size division diagram

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Fig. 4. Bilinear interpolation diagram

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Fig. 5. (a) Distorted image; (b) corrected image with radial distortion model; (c) corrected image with global polynomial model; (d) corrected image with triangle division method; (e) corrected image with edge fitting method; (f) corrected image with the proposed method

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Fig. 6. Comparison of RRMSE in different models

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Fig. 7. Comparison of RRMSE in different edge processing methods

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Fig. 8. Residual error distribution of different methods

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Fig. 9. (a) Distorted image; (b) corrected image with radial distortion model; (c) corrected image with global polynomial model; (d) corrected image with triangle division method; (e) corrected image with edge fitting method; (f) corrected image with proposed method

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Fig. 10. (a) Real distorted image; (b) corrected image

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Table 1. RMSE of different methods
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Table 1. RMSE of different methods
Image RMSE /pixel
Distorted image 4.1317
Radial distortion model 5.2482
Global polynomial model 1.1765
Triangle division method 0.4139
Edge fitting method 0.1522
The proposed method 0.1251

Table 2. RRMSE of different methods

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Table 2. RRMSE of different methods

Rownumber	Distortedimage	Radial distortion model	Global polynomial model	Triangle division method	Edge fitting method	Proposed method
1	1.3941	1.0270	0.6024	0.8007	0.8007	0.0915
5	2.1661	0.9033	0.7177	0.2027	0.0611	0.0444
10	1.7725	1.4308	0.5615	0.1042	0.1093	0.0887
15	1.9475	1.9198	0.4703	0.0556	0.0556	0.0556
20	3.1640	3.5712	0.5395	0.2519	0.1181	0.0835
24	5.5211	5.9587	0.9601	0.3365	0.1738	0.1353

Table 3. MRE of different methods
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Table 3. MRE of different methods
Image MRE /pixel
Distorted image 14.1680
Triangle division method 8.0355
Edge fitting method 4.9879
Proposed method 1.4872

Table 4. Linear correlation coefficient of different methods
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Table 4. Linear correlation coefficient of different methods
Image r
Distorted image 0.6766
Radial distortion model 0.7901
Global polynomial model 0.9432
Triangle division method 0.9464
Edge fitting method 0.9907
The proposed method 0.9961

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Yuhang Ren, Binkang Li, Errui Zhou, Shaohua Yang, Ming Yan, Ming'an Guo, Gang Li, Lu Liu, Jing Wang, Mingyue Shi. Image Distortion Correction of Flash Camera Systems Based on Field-of-View Division Model[J]. Laser & Optoelectronics Progress, 2024, 61(24): 2411001

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