Research Article

Image-Based Framework for Concrete Surface Crack Monitoring and Quantification

Figure 8

Crack detection using the level set-based active contour method: (a) the selected ROI, also shown in Figure 6; (b) the initialized contours; (c) and (d) intermediate detection results; (e) the converged result; (f) the cleaned detection result with contours for the air pockets removed.
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(f)