Fig. 4: Depicts the DSPP network architecture. Initially inspired by ref. 37, this design has undergone subsequent modifications.
From: Mural restoration via the fusion of edge-guided and multi-scale spatial features

The DSPP network utilizes multiple average pooling operations at different scales to generate feature maps, which are then upsampled via bilinear interpolation to match the original resolution and concatenated along the channel dimension to form a multi-scale feature representation.