Acta Photonica Sinica, Volume. 53, Issue 9, 0911003(2024)
A Weighted Guide Filtering Demosaicing Method with Weighting Coefficients Based on RGB-NIR Filter Array
Figures & Tables(12)
Fig. 4. RGB-NIR sensor camera image acquisition system and spectral curves of illumination light sources
Fig. 7. Schematic diagram of the image acquisition system and localized enlarged view and image acquisition system physical diagram
Fig. 8. RGB-NIR sensor camera image processing flow and images captured by different cameras
Table 1. PSNR（CPSNR） comparison of algorithms
View tableView in ArticleTable 1. PSNR（CPSNR） comparison of algorithms
Figure Bilinear AIuLG RI-based Proposed RGB NIR RGB NIR RGB NIR RGB NIR Average 30.05 29.26 33.29 32.43 37.66 34.02 38.04 34.90 Butterfly 29.54 31.65 32.67 34.14 37.24 36.80 37.78 37.74 Butterfly2 33.42 32.46 39.78 38.15 43.95 39.30 44.23 39.92 Chart 26.34 27.48 34.13 34.39 39.29 35.44 39.98 36.65 Chart2 26.99 27.84 34.36 35.16 40.07 37.42 40.80 37.82 Chart3 25.35 25.50 32.50 34.72 40.31 37.85 40.23 39.73 Cloth 27.58 24.73 29.02 26.36 33.08 27.17 33.79 27.81 Cloth2 32.95 28.05 33.92 28.88 35.81 29.75 36.62 30.98 Cloth3 29.69 27.93 31.37 29.69 35.20 30.52 35.94 31.18 Doll 30.87 29.57 32.30 30.71 34.41 30.61 34.70 31.94 Doll2 33.52 29.29 34.45 29.57 37.60 29.97 37.92 30.87 Fan 32.45 33.05 34.23 35.94 38.19 36.93 38.11 38.04 Fan2 34.69 33.94 36.17 36.53 39.96 37.94 40.03 39.14 Fan3 29.35 29.28 31.18 30.77 34.18 32.52 34.65 32.96 Origami 31.37 31.01 34.77 32.82 42.39 37.86 42.19 38.48 Paint 27.97 27.82 29.73 29.62 33.23 31.61 33.39 32.06 Spray 28.79 28.60 32.10 31.36 37.67 32.60 38.28 33.04
Table 2. Comparison of NIQE indicator when the infrared light source is turned on
View tableView in ArticleTable 2. Comparison of NIQE indicator when the infrared light source is turned on
Algorithm Scene 1 Scene 2 Scene 3 Average RGB NIR RGB NIR RGB NIR RGB NIR AIuLG 9.73 3.97 10.77 4.29 9.15 4.07 9.88 4.11 RI-based 7.36 3.64 6.83 3.97 5.90 4.05 6.70 3.89 Proposed 5.81 3.75 5.97 3.80 4.84 3.76 5.54 3.77
Table 3. Comparison of NIQE indicator when the infrared light source is turned off
View tableView in ArticleTable 3. Comparison of NIQE indicator when the infrared light source is turned off
Algorithm Scene 1 Scene 2 Scene 3 Average RGB NIR RGB NIR RGB NIR RGB NIR AIuLG 9.10 7.44 9.57 7.75 8.89 6.56 9.19 7.25 RI-based 6.22 4.94 6.17 5.50 6.25 6.23 6.21 5.56 Proposed 5.25 4.07 5.48 4.46 5.25 5.16 5.33 4.56
Table 4. Comparison of absolute values of average NIQE changes before and after turning off the infrared light source
View tableView in ArticleTable 4. Comparison of absolute values of average NIQE changes before and after turning off the infrared light source
Algorithm Average RGB NIR AIuLG 0.69 3.14 RI-based 0.49 1.67 Proposed 0.21 0.79
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Xin WU, Baoteng XU, Jialin LIU, Wei ZHOU, Xibin YANG. A Weighted Guide Filtering Demosaicing Method with Weighting Coefficients Based on RGB-NIR Filter Array[J]. Acta Photonica Sinica, 2024, 53(9): 0911003
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Received: Feb. 2, 2024
Accepted: Mar. 28, 2024
Published Online: Nov. 13, 2024
The Author Email: Xibin YANG (yangxb@sibet.ac.cn)
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