SteganoCNN Hidden and Extracted Procedures.

Input:c, $s1$, $s2$

(1) Initialize the convolution operation weight: $Normal(0.0,0.02)$;

Initialize the BatchNorm operation weight: $Normal(1.0,0.02)$.

(2)     $x=Cat(c,s1,s2)$

(3)    For i = 1 to 200 do

(4)    $c^{\prime }=Encoder\left(x\right)$.

(5)    Update the $weight$ of the Encoder by $∥c-c^{\prime }∥$.

(6)    $y=Decoder\left(c^{\prime }\right)$.

(7)    $s{1}^{\prime }=RevealNetwork1\left(y\right)$;

$s{2}^{\prime }=RevealNetwork2\left(y\right)$.

(8)    Update the Encoder and Decoder $weights$ through $\zeta$.

(9)    End For

Output:$c^{\prime }$, $s{1}^{\prime }$, $s{2}^{\prime }$