Research Article

[Retracted] Deep Learning-Based Crack Monitoring for Ultra-High Performance Concrete (UHPC)

Figure 4

Convolutional combination of voids with expansion factor [1 2 9]. (a) Layer 2 convolution output feature map. (b) Layer 1 convolution output feature map. (c) Input feature map.
(a)
(b)
(c)
(d)