Image based Steganography

About

DWT-DCT method to hide messages inside an image. Implementation based off of this paper Ali Al-Haj, "Combined DWT-DCT Digital Image Watermarking", September 2007 . The main goal of this was to encode a message in an image which was file format independent, and somewhat compression resistant such that it could be sent over the internet trivially, though the end result is fairly inconsistent. My main test for this was to paste it into discord then decoding the compressed preview version. This is somewhat successful when the original image was already small such that the discord preview version was relatively the same resolution. Also, images with uniform backgrounds may also be clearer. I was thinking of adding encryption for the message, but I realise now that any errors might mess up the entire encryption process. Instead, knowing the seed of the noise pattern the message is embedded in can be used a pseudo decryption key for secret messages.