Steganography is the technique of hiding messages or other images in the low-order bits of the data for an image. The Matlab image function has a hidden image that contains other hidden images. To see the top-level image, just execute the single command image Then, to improve its appearance, colormap(gray(32)) truesize axis ij axis image axis off
But that's just the beginning. The NCM program stegano helps you continue the investigation.
How many images are hidden in the cdata for the default image?
What does this have to do with the structure of ?oating-point numbers?