DCT Domain-Based Digital Watermarking Technology
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Resource Overview
This resource presents our undergraduate thesis project implementing digital watermarking in the DCT domain, featuring practical implementation using MATLAB/Octave for embedding and extracting watermarks from digital images through frequency domain transformation and quantization techniques.
Detailed Documentation
This project presents our undergraduate thesis achievement focused on DCT domain-based digital watermarking technology. Digital watermarking serves as a crucial technique for embedding hidden information within digital media to protect copyright and ensure security. Our implementation uses 8×8 block DCT transformation followed by middle-frequency coefficient quantization to embed watermarks robustly while maintaining image quality.
The research demonstrates significant value for practical applications and development of digital watermarking systems, particularly in copyright protection scenarios. We hope users will support our research efforts and benefit from this technical implementation that includes core functions for watermark embedding, extraction, and robustness testing against common image processing operations.
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