Steganography - Sign images by altering pixels
Posted: 2014-10-23T23:12:16-07:00
Probably outside of the scope of what imagemagick can do but maybe I am surprised. I wonder if its possible to either sign or embed information in an image by altering the pixels into what it can work similar to a QR code.
The idea is that the image would have some minuscule pixels alterated withing the picture, and a scan could be able to detect the values of the pixels and extract a messag or signature. While plain look wont be able to detect such change.
If anyone have ever heard of this or done something, would be helpful.
The idea is that the image would have some minuscule pixels alterated withing the picture, and a scan could be able to detect the values of the pixels and extract a messag or signature. While plain look wont be able to detect such change.
If anyone have ever heard of this or done something, would be helpful.