Fine Segmentation of Concrete 3D-Printed Elements Based on Information Entropy Between Layers

Zongfang Ma; Xingwei Yang; Lin Song; Chao Liu; Huawei Liu; Yiwen Wu

doi:10.3788/LOP202259.0410005

Laser & Optoelectronics Progress, Volume. 59, Issue 4, 0410005(2022)

Fine Segmentation of Concrete 3D-Printed Elements Based on Information Entropy Between Layers

Zongfang Ma¹, Xingwei Yang^1、*, Lin Song¹, Chao Liu², Huawei Liu³, and Yiwen Wu³

¹College of Information and Control Engineering, Xi'an University of Architecture and Technology, Xi'an , Shaanxi 710055, China

²School of Science, Xi'an University of Architecture and Technology, Xi'an , Shaanxi 710055, China

³School of Civil Engineering, Xi'an University of Architecture and Technology, Xi'an , Shaanxi 710055, China

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Figures & Tables(9)

Fig. 1. Algorithm flow

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Fig. 2. Comparison results of segmentation algorithm. (a) Original image; (b) FCM; (c) OTSU; (d) MET; (e) MIT; (f) Watershed; (g) proposed algorithm; (h) manually labeled image

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Fig. 3. Accuracy of different algorithms for concrete 3D components

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Fig. 4. F₁ of different algorithms for concrete 3D components

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Fig. 5. Detection results of element defect.(a) Original image; (b) FCM; (c) OTSU; (d) MET; (e) MIT; (f) Watershed; (g) proposed algorithm

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Fig. 6. Segmentation results under different γ thresholds

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Fig. 7. Segmentation results under different d thresholds

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Table 1. Index comparison of segmentation results with different γ thresholds
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Table 1. Index comparison of segmentation results with different γ thresholds
γ Precision Recall Accuracy F-measure
0.5 0.9762 0.7707 0.8659 0.8614
1 0.9790 0.8036 0.8845 0.8827
2 0.9883 0.7921 0.8825 0.8794
3 0.9893 0.6835 0.8249 0.8085

Table 2. Index comparison of segmentation results with different d thresholds
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Table 2. Index comparison of segmentation results with different d thresholds
d Precision Recall Accuracy F-measure
1 0.9861 0.6496 0.8056 0.7832
2 0.9883 0.7291 0.8825 0.8794
3 0.9885 0.8629 0.9205 0.9215
4 0.9893 0.9128 0.9475 0.9495

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Zongfang Ma, Xingwei Yang, Lin Song, Chao Liu, Huawei Liu, Yiwen Wu. Fine Segmentation of Concrete 3D-Printed Elements Based on Information Entropy Between Layers[J]. Laser & Optoelectronics Progress, 2022, 59(4): 0410005

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