Table 3 Mean square error of Stego image and reconstructed secret image.

From: Comparative performance assessment of deep learning based image steganography techniques

Encoder model

MSE

Cover and Stego image

Secret and reconstructed secret image

U-Net Encoder

0.0001

0.0003

V-Net Encoder

0.0019

0.0010

U-Net++ Encoder

0.007

0.006