| Abdelkader H. Ouda and
Mahmoud El-Sakka, ``Wavelet Transforms and Their Applications in Image
Watermarking'', TR#633, (15 pages), Computer Science Department,
University of Western Ontario, September 2004, London, Ontario, Canada.
|
|
| Abstract:
The
development of the image compression techniques, such as JPEG and more
recently the JPEG2000, allowed the widespread use of images in the
Internet, as well as the digital TV broadcast. This is because
compressed digital images can be distributed via the worldwide Internet
users in a cost-efficient way. This development brings also a new
challenge that is duplications or even manipulation the images content
become so easy and difficult to observe. Therefore, it is strongly
needed to secure these images in order to keep their distribution works
reliable. Over the past few years, digital watermarking has become one
of the most suitable solutions for image security issues. In this work,
we will study an outline of the watermarking techniques available
today, which try to utilize the wavelet transform properties. This
study will demonstrate how the wavelet transform properties, such as
multi-resolution property of the wavelet image decomposition,
space-frequency localization, or Human Visual System (HVS) model, can
be implemented. The advantages and disadvantages of these
implementations will be discussed as well. |
|
|
