Optics and Precision Engineering, Volume. 32, Issue 3, 456(2024)
Light field angular reconstruction with joint Fourier convolution and channel attention
Figures & Tables(10)
Fig. 1. Framework of light field reconstruction method with joint Fourier convolution and channel attention
Fig. 4. Schematic of viewpoint weighting indirect view synthesis module
Fig. 5. Subjective visual effects of missing views reconstructed by different methods
Fig. 6. PSNR distribution of SAIs achieved by DistgASR［9］ and proposed method on 30 Scenes dataset on task of 2×2→7×7
Fig. 7. Visual verification of validity of DFFCR block in proposed method on light field image IMG_1743
Table 1. Partition of training and testing sets in experiments
View tableView in ArticleTable 1. Partition of training and testing sets in experiments
Using Dataset Data type Number of scenes Training 30Scenes Real-world 100 Testing Reflective Real-world 15 Occlusion Real-world 25 30Scenes Real-world 30
Table 2. PSNR and SSIM of different light field angular reconstruction methods on task of 2×2→7×7
View tableView in ArticleTable 2. PSNR and SSIM of different light field angular reconstruction methods on task of 2×2→7×7
Method 30 Scenes Occlusion Reflective PSNR/dB SSIM PSNR/dB SSIM PSNR/dB SSIM ShearedEPI ［ 11 ］39.17 0.975 4 34.41 0.954 8 36.38 0.944 3 Yeung ［ 6 ］42.77 0.985 6 38.88 0.979 7 38.33 0.960 2 LFASR-geo［ 21 ］42.53 0.984 8 38.36 0.976 6 38.20 0.955 3 FS-GAF［ 12 ］42.75 0.986 1 38.51 0.978 8 38.35 0.957 2 DistgASR ［ 9 ］43.64 0.995 1 39.46 0.990 8 39.11 0.978 0 IRVAE ［ 13 ］43.70 0.995 1 40.45 0.992 5 39.81 0.982 3 Proposed method 43.78 0.995 2 40.58 0.992 7 39.94 0.982 2
Table 3. Ablation experiments of proposed method on task of 2×2→7×7
View tableView in ArticleTable 3. Ablation experiments of proposed method on task of 2×2→7×7
DFFCR CAB VWIVS 30 Scenes Occlusion Reflective PSNR/dB SSIM PSNR/dB SSIM PSNR/dB SSIM √ √ 43.56 0.994 8 40.10 0.991 3 39.79 0.981 8 √ √ 43.28 0.994 6 39.80 0.991 2 39.63 0.980 4 √ √ 43.66 0.995 1 40.21 0.991 6 39.81 0.981 4 √ √ √ 43.78 0.995 2 40.58 0.992 7 39.94 0.982 2
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Tao ZHOU, Mei YU, Yeyao CHEN, Zhidi JIANG, Gangyi JIANG. Light field angular reconstruction with joint Fourier convolution and channel attention[J]. Optics and Precision Engineering, 2024, 32(3): 456
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Received: Aug. 7, 2023
Accepted: --
Published Online: Apr. 2, 2024
The Author Email: Mei YU (yumei@nbu.edu.cn)
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