Piao Zhou, Qiang Li, Shuguang Zeng, Sheng Zheng, Yanshan Xiao, Shaowei Zhang, Xiaolei Li. Surface Crack Detection Method for Ceramic Tile Based on Hessian Matrix Multi-Scale Filtering[J]. Laser & Optoelectronics Progress, 2020, 57(10): 101022
- Laser & Optoelectronics Progress
- Vol. 57, Issue 10, 101022 (2020)
Fig. 1. Image of ceramic tile.(a) Typical ceramic tile crack image; (b) 3D image of surface gray distribution of a typical ceramic tile
Fig. 2. Multi-scale Hessian matrix filtering ceramic tile surface crack detection process
Fig. 3. Image multi-scale filtering. (a) Original image of crack area Iσ(σ=0); (b) spatial scale image Iσ(σ=1); (c) spatial scale image Iσ(σ=5); (d) spatial scale image Iσ(σ=10); (e) spatial scale image Iσ(σ=15); (f) spatial scale range image Iσ(σ=1)~Iσ(σ=15)
Fig. 4. Test results of crack area defect. (a) Hessian crack enhancement image; (b) crack binarization image
Fig. 5. Detection process of ceramic tile crack. (a) Red channel image of ceramic tile; (b) spatial scale range image Iσ(σ=1)~Iσ(σ=15); (c) Hessian crack enhancement image; (d) result of crack detection
Fig. 6. Test results of different algorithms. (a) Red channel image of ceramic tile; (b) method of Ref. [8]; (c) method of Ref. [9]; (d) method of Ref. [11]; (e) method of Ref. [21]; (f) method of Ref. [22]; (e) proposed method
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Table 1. Accuracy of detection by six algorithms
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