Coarse
Output
1+3+1+32 ✕ H/c ✕ W/c

Coarse Results Upsampled
Concat with Input Downsampled
1+3+32+6 ✕ H/2 ✕ W/2

Refined
Output
1+3 ✕ H ✕ W

Skip Connections

Bilinear Upsampling

Crop Patch
8 ✕ 8 

Replace Patch
4 ✕ 4

Alpha Patch

Foreground Residual Patch

Fgr Residual + Source

Alpha ✕ Foreground