Radio Signal Steganography in Space Images Based on Wavelet Transform. Data Hiding In Astronomical Images vs. Satellite Images Does it work? ... and which is better?

      Аннотация: Sometimes in life, you have to challenge yourself to see if you can do what sounds crazy to many other people, especially when they insist that you can't do it. Steganography is the art of hiding the fact that communication is taking place by hiding information in other information. In image steganography, the information is hidden exclusively in an image which is called the cover image. When I started reading about data hiding and read the restrictions and features that should be contained in the cover images, and as astronomy department student, I noticed that they mostly contained in astronomical images, and when I searched the internet about data hiding (that was in 2011) I couldn't find a work about hiding a sound file in an image and I had to ask Why? Every one said that a sound file is too large to be embedded in an image, I said: But we can compress it, they said that the images are mostly small sized files, I replied: but Astronomical images come in high resolution and large sizes, they said you can't embed more than 5 seconds, I said so what.. I need to give it a try and see what I can do. For me this was a challenge that I succeed in, and I hope you succeed in yours too.

Ключевые слова: Data Hiding, satellite images, Steganography, Wavelet Transform, Astronomical Images, Least Significant Bit Insertion