Digital Watermarking Algorithm Based on Discrete Wavelet Cosine Transform (DCT)
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Resource Overview
Implementation of digital watermark embedding and extraction processes using Discrete Wavelet Cosine Transform (DCT)-based algorithm. Graduation project source code with matrix operations and frequency-domain transformation functions.
Detailed Documentation
In this graduation project, we implemented digital watermark embedding and extraction processes using a Discrete Wavelet Cosine Transform (DCT)-based algorithm. This algorithm enhances data integrity and security by embedding digital watermarks into original data. The implementation involved developing source code with key functions including DCT coefficient modification, wavelet decomposition/reconstruction, and watermark embedding strength adjustment. Through multiple iterations of code optimization and parameter tuning, we ensured algorithm reliability and computational efficiency. The final implementation successfully demonstrates a robust digital watermarking system applicable to various domains such as digital rights protection and information security, featuring adaptive threshold selection and error-correction mechanisms in the code architecture.
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