Research on Coal-Rock Fracture Image Edge Detection Based on Tikhonov Regularization and Fractional Order Differential Operator

Figure 7

Comparison of edge extraction results under different orders Laplacian on a coal-rock image. (a) α = 0.1. (b) α = 0.2. (c) α = 0.3. (d) α = 0.4. (e) α = 0.5. (f) α = 0.6. (g) α = 0.7. (h) α = 0.8. (i) α = 0.9.

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