Acta Optica Sinica, Volume. 40, Issue 11, 1110002(2020)
Inclusion Detection from DR Images of Low-Density Powder Materials
Figures & Tables(14)
Fig. 2. Preprocessing. (a) Original image; (b) result of window width/window level adjustment; (c) result of secondary enhancement
Fig. 4. Matching effect. (a) Original image; (b) original image with rotation of 15°; (c) matched overlapping image; (d) matched graph before processing; (e) matched graph after processing
Fig. 5. Segmentation effect. (a) Inclusion image of region-of-interest; (b) threshold segmentation result
Fig. 7. Detection diagrams of image quality indicator at different scanning angles. (a) 0°; (b) 7.5°; (c) 15°
Table 1. List of size information of image quality indicator at 0°
View tableTable 1. List of size information of image quality indicator at 0°
Silk No. Standard length / mm Standard width / mm Perimeter / mm Area / mm2 Length Width Measured value /mm Fractional error /% Measured value /mm Fractional error /% 6 50 1.00 110.481 56.9824 50.3847 0.7694 0.9620 3.800 7 50 0.80 110.092 47.1213 50.3319 0.6638 0.7450 6.874 8 50 0.63 109.522 38.9471 50.3035 0.6070 0.5828 7.498 9 50 0.50 108.944 31.6081 50.1033 0.2066 0.4541 9.172 10 50 0.40 109.038 25.5238 50.2557 0.5114 0.4364 9.098 11 50 0.32 108.118 20.5672 49.8720 0.2461 0.2914 8.943 12 50 0.25 107.453 14.9086 49.6170 0.7660 0.2060 17.580
Table 2. List of size information of image quality indicator at 7.5°
View tableTable 2. List of size information of image quality indicator at 7.5°
Silk No. Standard length / mm Standard width / mm Perimeter / mm Area / mm2 Length Width Measured value /mm Fractional error /% Measured value /mm Fractional error /% 6 50 1.00 108.488 55.6466 49.4907 1.0186 0.9437 5.631 7 50 0.80 107.918 45.6847 49.3862 1.2276 0.7649 4.390 8 50 0.63 107.273 38.0013 49.2336 1.5328 0.5869 6.832 9 50 0.50 106.675 30.6656 49.0835 1.8330 0.4341 13.164 10 50 0.40 106.856 24.6040 49.1832 1.6336 0.3605 9.858 11 50 0.32 105.802 19.8099 48.8023 2.3954 0.2937 8.221 12 50 0.25 105.043 14.0408 48.5208 2.9584 0.2176 12.952
Table 3. List of size information of image quality indicator at 15°
View tableTable 3. List of size information of image quality indicator at 15°
Silk No. Standard length / mm Standard width / mm Perimeter / mm Area / mm2 Length Width Measured value /mm Fractional error /% Measured value /mm Fractional error /% 6 50 1.00 104.701 55.1851 47.7327 4.5346 1.0333 3.333 7 50 0.80 104.083 45.6100 47.5802 4.8396 0.8417 5.219 8 50 0.63 103.210 38.1865 47.3488 5.3024 0.6648 5.532 9 50 0.50 102.605 31.0816 47.1243 5.7514 0.5484 9.688 10 50 0.40 102.491 25.0395 47.2003 5.5994 0.4341 8.544 11 50 0.32 101.617 20.2422 46.8423 6.3154 0.3324 3.883 12 50 0.25 101.020 15.0257 46.5655 6.8690 0.2176 12.952
Table 4. Size information of inclusion at different angles
View tableTable 4. Size information of inclusion at different angles
Silk No. 0° 15° -15° -30° Area value / mm2 Length / mm Area value / mm2 Length / mm Area value / mm2 Length / mm Area value / mm2 Length / mm 6 56.9824 50.3847 55.1851 47.7327 54.9738 49.4280 50.6998 45.0163 7 47.1213 50.3319 45.6100 47.5802 45.0965 49.4577 41.4497 45.0454 8 38.9471 50.3035 38.1865 47.3488 37.3870 49.5539 34.8388 45.2485
Table 5. List of area information at different angles
View tableTable 5. List of area information at different angles
Silk No. 0° 7.5° 15° -7.5° -15° Area value / mm2 Area value /mm2 Fractional error /% Area value /mm2 Fractional error /% Area value /mm2 Fractional error /% Area value /mm2 Fractional error /% 6 59.5468 59.1742 0.626 59.5729 0.044 59.3345 0.356 59.7224 0.295 7 48.1782 47.6563 1.083 47.5001 1.407 47.9150 0.546 47.9748 0.422 8 39.8153 38.7589 2.653 38.2444 3.945 38.9514 2.170 39.2421 1.439
Table 6. List of wire diameter information
View tableTable 6. List of wire diameter information
Wire No. Standard diameter /mm Measured diameter /mm Fractional error /% 1 1.00 1.0444 4.435 2 0.80 0.7740 3.250 3 0.60 0.5841 2.654 4 0.50 0.4858 2.840 5 0.40 0.4283 7.071 6 0.30 0.3289 9.629 7 0.20 0.2580 29
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Jiawei Chen, Kuan Shen. Inclusion Detection from DR Images of Low-Density Powder Materials[J]. Acta Optica Sinica, 2020, 40(11): 1110002
Paper Information
Category: Image Processing
Received: Dec. 23, 2019
Accepted: Mar. 9, 2020
Published Online: Jun. 10, 2020
The Author Email: Shen Kuan (shenk@cqu.edu.cn)
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