Simulink Based Architecture Prototyping of Compressed Domain MPEG-4 Watermarking
نویسندگان
چکیده
We present a novel algorithm, architecture, and high-level Simulink prototyping for visible watermarking of MPEG-4 video streams. The watermark is inserted in the video stream during compression, resulting in an optimized compression/watermarking algorithm and system. Discrete Cosine Transform (DCT) watermarking, due to its robust nature, was chosen in this work to accomplish MPEG-4 video copyright protection. Drift compensation in the spatial domain is implemented for obtaining a stable watermark. The algorithm will be useful for insertion of broadcasters’ logo and subtitling in real-time applications such as sports broadcasting in digital TV.
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