Enhancing Structural Crack Detection through a Multiscale Multilevel Mask Deep Convolutional Neural Network and Line Similarity Index

Figure 12

Estimated masks of sample images captured inside a building (overlapped for visualization by the crack mask with a dilation of three). (a) to (d) correspond to images no. 12, no. 1, no. 6, and no. 11. The notation 1 to 4 corresponds to the original image, original image overlapped by ground truth, original image overlapped by the DCNN estimation result, and original image overlapped by the result from the proposed method overlapped on the image.