Table 1.

Encoder structure.

	Enc. 1	Enc. 2	Enc. 3	Enc. 4	Enc. 5	Enc. 6	Enc. 7
Input	Input	Input	Input	Input	Input	Input	Input
Structure	$\left|\begin{array}{c}3\times 3 \mathrm{Conv}.\\ \mathrm{Stride}=2, \mathrm{Pool}=0\end{array}\right|$	$\left|\begin{array}{c}1\times 1 \mathrm{Conv}\\ 3\times 3 \mathrm{Conv}\end{array}\right|$	$\left|\begin{array}{c}3\times 3 \mathrm{Conv}\\ \mathrm{Stride}=2, \mathrm{Pool}=0\end{array}\right|$	$\left|\begin{array}{c}1\times 1 \mathrm{Conv}\\ 3\times 3 \mathrm{Conv}\end{array}\right|$	$\left|\begin{array}{c}3\times 3 \mathrm{Conv}\\ \mathrm{Stride}=2, \mathrm{Pool}=1\end{array}\right|$	$\left|\begin{array}{c}1\times 1 \mathrm{Conv}\\ 3\times 3 \mathrm{Conv}\end{array}\right|$	$\left|\begin{array}{c}3\times 3 \mathrm{Conv}\\ \mathrm{Stride}=2, \mathrm{Pool}=1\end{array}\right|$
Output	$310\times 230\times 32$	$310\times 230\times 32$	$155\times 115\times 64$	$155\times 115\times 64$	$78\times 58\times 128$	$78\times 58\times 128$	$39\times 29\times 256$