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Spread Spectrum Image Watermarking with Digital Design Abstract: The watermarking technique is a potential solution for copyright protection, authentication and integrity verification of digital media. Among the widely used watermarking techniques, spread spectrum modulation based method becomes appealing due to its inherent advantage of greater robustness and is used widely for various applications. Some watermarking applications are digital television broadcasting, internet protocol television essentially demand development of low cost watermark algorithms in order to implement in real-time environment. This paper proposes a block based multiple bit spatial domain spread spectrum image watermarking scheme where a gray scale watermark image is can be represented by less number of binary digits using novel channel coding and spatial bi-phase modulation principle. VLSI implementation using Field Programmable Gate Array has been developed for the algorithm and circuit can be integrated into the existing digital still camera framework. The proposed image watermarking algorithm may be applied for authentication as well as secured communication in real time environment. Block Diagram: Channel Coding Water Marking FPGA Spread Spectrum modulatiom Existing system: Image watermarking system with large number of information bits. Existing system disadvantage: Less secured and less robust Proposed system: Spread spectrum image watermarking scheme where a gray scale watermark image is represented by less number of binary digits using novel channel coding spatial bi-phase modulation principle. Proposed mage watermarking algorithm may be applied for authentication as well as secured communication in real time environment. Proposed system advantage: Among the widely used watermarking techniques spread spectrum modulation based method become appealing due to inherent advantage of greater robustness and it’s used for various applications. Software Requirements: Modelsim 6.0 Xilinx 9.1i Hardware requirement: Xilinx Spartan 3 FPGA Introduction about the Software: ModelSim and xilinx offers a native environment with support for multiple languages including VHDL, Verilog, SystemC, and SystemVerilog. The integrated verification and debug environment finds more bugs faster and enhances performance with the mixed-HDL flow. Introduction about the domain: Imaging and video applications are one of the fastest growing sectors of the market today. Typical application areas include e.g. medical imaging, HDTV, digital cameras, set-top boxes, machine vision and security surveillance. As the evolution in these applications progresses, the demands for technology innovations tend to grow rapidly over the years. Driven by the consumer electronics market, new emerging standards along with increasing requirements on system performance imposes great challenges on today’s imaging and video product development. To meet with the constantly improved system performance measured in, e.g., resolution, throughput, robustness, power consumption and digital convergence (where a wide range of terminal devices must process multimedia data streams including video, audio, GPS, cellular, etc.), new design methodologies and hardware accelerator architectures are constantly called for in the hardware implementation of such systems with real-time processing power.
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