Hardware Implementation of Adaptive Watermarking Based on Local Spatial
Disorder Analysis
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abstract
With the increasing use of the internet and the ease of exchange of
multimedia content, the protection of ownership rights has become a significant
concern. Watermarking is an efficient means for this purpose. In many
applications, real-time watermarking is required, which demands hardware
implementation of low complexity and robust algorithm. In this paper, an
adaptive watermarking is presented, which uses embedding in different
bit-planes to achieve transparency and robustness. Local disorder of pixels is
analyzed to control the strength of the watermark. A new low complexity method
for disorder analysis is proposed, and its hardware implantation is presented.
An embedding method is proposed, which causes lower degradation in the
watermarked image. Also, the performance of proposed watermarking architecture
is improved by a pipe-line structure and is tested on an FPGA device. Results
show that the algorithm produces transparent and robust watermarked images. The
synthesis report from FPGA implementation illustrates a low complexity hardware
structure.