Decoder not working

[AkashSCIENTIST]

Description

Decoder displays this error : ValueError: Failed to find message.

What I Did

[Xallt]

I have the same error Things I tried:

• Load the pretrained dense checkpoint and try to encode-decode a custom image with a basic one-sentence message
• The same, but with an image from the train/ of DIV2K and from the val/
• Trained my own SteganoGAN on the DIV2K for about 20 epochs, tried to encode-decode an image from train/

All failed with the same error "Failed to find message"

I'm suspecting there's some kind of version mismatch with either zlib or reedsolo, because 0 candidates during decoding indicates that either Reed-Solomon decoding or dlib decompression failed

[Xallt]

Ok this issue https://github.com/DAI-Lab/SteganoGAN/issues/55 indicates that reedsolo version is already capped, so maybe the issue is with zlib?

[Xallt]

And zlib is shipped with python directly, so I doubt there's an error there I'm out of ideas

[xbtzpx]

描述

解码器显示此错误：ValueError: Failed to find message.

我做了什么

Did you solve the problem? Does your encoder work?

[jatindarkumar12]

sir i want to ask you something in this project can we encode our secret image in image or we only encode the secreat message in the image?

[Xallt]

To update on the issue: The decoding algorithm relies on some assumption that may easily fail. I didn't have this "Failed to find message" issue with a much-much smaller message, but having it fail so often, it contradicts the promises from the paper. Hopefully at some point there will be a better way of doing robust Reed-Solomon encoding/decoding into an image

@jatindarkumar12 to answer your question - this method is supposed to hide an arbitrary bit string inside of a cover image. Every bit is decoded correctly with a probability, so to be confident that we will extract the message, we use Reed-Solomon encoding.

Sadly, right now it works somewhat reliably only with a very small bit message, so I doubt you can fit a whole image inside the cover image

[jatindarkumar12]

sir we want to implementing the decoding of image in cover image in this project please guide us something

[Xallt]

@jatindarkumar12 if you want help, email me on the address from my profile