Chinese Optics, Volume. 17, Issue 2, 354(2024)
Design of optical field of vision imaging for defect detection of paper and transparent film
Fig. 2. Imaging of transparent film in dark field forward lighting
Fig. 7. Optical paths of a spherical light field with rays emitted upward at (a) 30°, (b) 45°, (c) 60°
Fig. 8. Optical paths of an ellipsoidal light field with rays emitted upward at the end of semi-major axis at (a) 30°, (b) 45°, (c) 60°
Fig. 9. Optical paths of an ellipsoidal light field with rays emitted upward at the end of short haff-shaft at (a) 30°, (b) 45°, (c) 60°
Fig. 11. Response surface plotted by three coefficients, ie., radius radio, projection port distance, and irradiation ratio
Fig. 12. Response surface plotted by three coefficients, i.e., radius ratio, irradiation surface distance, and irradiation ratio
Fig. 17. Presentation rates of imaging defects under different light fields
Fig. 18. Patch embedding vector and location segmentation of PaDiM abnormal detection
Fig. 19. Abnormal detection and classification detection results of defects
Table 1. Main parameters of the three types of integrated light fields
View tableView in ArticleTable 1. Main parameters of the three types of integrated light fields
光场类型 光罩尺寸A ×B×H/mm 半径R或R1×R2×R3/mm 投射口距 离S/mm 辐照面 距离C/mm 标准球面积分光场 180×180×130 85 35 20 椭球面积 分光场1 180×180×110 85×65×65 35 20 椭球面积 分光场2 180×180×110 65×85×65 35 20 弧面积 分光场 180×130×130 85 35 20
Table 2. Coding table of experimental factors and levels
View tableView in ArticleTable 2. Coding table of experimental factors and levels
水平 因素 半径比（R1/R2） 投射口距离S/（mm） 辐照面距离C/( mm) 1 1.1 30 5 0 1.3 35 17.5 -1 1.5 40 30
Table 3. Experimental scheme and results
View tableView in ArticleTable 3. Experimental scheme and results
序号 因素 辐照比Q/% R1/R2 S/（mm） C/( mm) 1 1.3 40 30 80 2 1.1 35 5 76 3 1.5 35 5 74 4 1.3 35 17.5 92 5 1.1 30 17.5 76 6 1.3 30 30 82 7 1.5 35 30 70 8 1.3 35 17.5 90 9 1.3 35 17.5 90 10 1.5 40 17.5 70 11 1.3 30 5 86 12 1.3 40 5 84 13 1.3 35 17.5 92 14 1.3 35 17.5 92 15 1.1 40 17.5 74 16 1.1 35 30 72 17 1.5 30 17.5 72
Table 4. Variance analysis
View tableView in ArticleTable 4. Variance analysis
变异来源 平方和 自由度 均方 F P 注：**表示影响显著（P<0.05），***表示影响极显著（P<0.01） 模型 1104.73 9 122.75 126.36 < 0.0001*** R1:R2 18.00 1 18.00 18.53 0.0035*** S 8.00 1 8.00 8.24 0.0240** C 32.00 1 32.00 32.94 0.0007*** 残差 6.80 7 0.9714 失拟 2.00 3 0.6667 0.5556 0.6716 误差 4.80 4 1.20 总和 1111.53 16
Table 5. Statistics on detected defects
View tableView in ArticleTable 5. Statistics on detected defects
缺陷类别 缺陷数量 椭球面积分光场环境 亮场前打光环境 暗场前打光环境 缺陷检出数量 缺陷检出率/% 缺陷检出数量 缺陷检出率/% 缺陷检出数量 缺陷检出率/% 油污 213 205 96.2 206 96.7 138 64.8 抵触 80 74 92.5 76 95 54 67.5 开口 50 50 100 50 100 38 76 泡皱 98 93 95 64 65 93 95 破损 125 115 92 74 59 116 92.8
Table 6. Machine Vision detection results of image defects
View tableView in ArticleTable 6. Machine Vision detection results of image defects
缺陷 类别 缺陷 数量 椭球面积分光场环境 亮场前打光环境 暗场前打光环境 异常检 出数量 异常检 出率/% 类别检出 数量 类别 检出率/% 异常检 出数量 异常检 出率/% 类别检出 数量 类别 检出率/% 异常检 出数量 异常检 出率/% 类别检出 数量 类别 检出率/% 油污 213 210 98.6 208 97.6 210 98.6 210 98.6 140 65.7 140 65.7 抵触 80 78 97.5 75 96 79 98.7 78 97.5 60 75 62 77.5 开口 50 50 100 50 100 50 100 50 100 38 76 40 80 泡皱 98 98 100 95 97 70 71.4 67 68 95 97 95 97 破损 125 123 98.4 120 96 82 65.5 80 64 120 96 122 97.6
Get Citation
Copy Citation Text
Shi-fei JIANG, Zhao-guo ZHANG, Fa-an WANG, Kai-ting XIE, Cheng-lin WANG, Zhi LI. Design of optical field of vision imaging for defect detection of paper and transparent film[J]. Chinese Optics, 2024, 17(2): 354
Category:
Received: Aug. 9, 2023
Accepted: --
Published Online: Apr. 15, 2024
The Author Email:
