  With the explosive growth of internet technology, easy transfer of digital
multimedia is feasible. However, this kind of convenience with which authorized
users can access information, turns out to be a mixed blessing due to
information piracy. The emerging field of Digital Rights Management (DRM)
systems addresses issues related to the intellectual property rights of digital
content. In this paper, an object-oriented (OO) DRM system, called "Imaging
System with Watermarking and Attack Resilience" (ISWAR), is presented that
generates and authenticates color images with embedded mechanisms for
protection against infringement of ownership rights as well as security
attacks. In addition to the methods, in the object-oriented sense, for
performing traditional encryption and decryption, the system implements methods
for visible and invisible watermarking. This paper presents one visible and one
invisible watermarking algorithm that have been integrated in the system. The
qualitative and quantitative results obtained for these two watermarking
algorithms with several benchmark images indicate that high-quality watermarked
images are produced by the algorithms. With the help of experimental results it
is demonstrated that the presented invisible watermarking techniques are
resilient to the well known benchmark attacks and hence a fail-safe method for
providing constant protection to ownership rights.
