Automatic Road Pavement Assessment with Image Processing: Review and Comparison

Figure 8

The levels of difficulties of the tested images. On these images, we present the four manual segmentations. The codes are red (light and dark), blue, green, for each of the four operators. The parts in yellow correspond to the parts of the cracks detected by more than one operator. There are two examples per category of segmentation. To better visualize, only a part of the images is shown. In the ambiguous images, we clearly see the mistake of the operator in dark red.