Print ISSN: 1681-6900

Online ISSN: 2412-0758

Keywords : Digital Watermarking

Text Hiding Using Artificial Neural Networks

Haider Tarish Haider; Faiq Sabar Baji; Ahmad Saeed Mohammad

Engineering and Technology Journal, 2012, Volume 30, Issue 20, Pages 3553-3564

The growth of information technology and data transfer led to increase the data
attacks, so that information security becomes an important issue to keep the data
saved during information exchanges in computer networks. Steganography
techniques used to protect the information from being detected. The art of
steganography will hide secret information into cover data, which will be sending
without any change so the attack does not recognize any change into cover image.
This paper use the Steganography and artificial neural networks to presents an
information hiding procedure for hiding text in cover image, the secret text will be
converted to binary code, also the cover image will be converted to the binary data
in form of vectors. The supervised learning of neural networks will use binary
patterns of hidden text as set of input values, and the corresponding cover image
data as target that used as teacher signal to neural network. The generated weights
from neural network and the coordinate of data block of cover image have been
saved and then used to extract hidden text data.

Watermarking in WAV Files Bases on Phase Coding

Salah S. Alrawi; Rasheed Abdulshaheed; Akeel A. Alhadithy

Engineering and Technology Journal, 2011, Volume 29, Issue 4, Pages 770-780

The growth of the network multimedia open the illegal ways for users to use the
digital media without any hindrance or control. This state created, the need for the
copyright protection of various digital media. WAV audio files is one of these media,
these media file format itself has no built in copy protection controls. Other systems
must be used to prevent illegal copying called watermarking. In this paper, we used
the phase coding method to embed the watermark, by using FFT method in two ways.
The first way used the block size of the wave data equal to (22) and the second way
used the block size of the wave data equal to (23).
The results of the above two ways shows that, when we use the first way the
noise of the sound will be very smaller than the results of the second way. On the
other hand the length of the watermark in second way will be longer than when use
the first way. Finally, we can say that the two ways yield good results.