Three-Dimensional Asphalt Pavement Crack Detection Based on Fruit Fly Optimisation Density Peak Clustering

Table 3

Return values of the detected crack.

Detection method	Threshold segmentation (%)	Edge detection (%)	K-means (%)	FOA-DPC (%) before the morphological processing	FOA-DPC (%)
Precision	3.78	5.98	56.27	85.37	88.66
Recall	79.45	22.13	52.44	88.51	91.32
F	7.22	9.42	54.29	86.06	89.97