MATLAB Source Code Implementation for Digital Watermarking

We provide MATLAB source code for implementing digital watermarking algorithms. The codebase includes implementations of various attack methods such as noise addition, filtering operations, compression attacks, and geometric transformations to help researchers thoroughly evaluate the security and robustness characteristics of digital watermarking systems. Through modifying the source code parameters, users can experiment with different attack scenarios and observe how watermarks withstand various processing operations. The modular code structure allows for easy customization and extension to meet specific application requirements. Key functions include watermark embedding algorithms (DCT-based, wavelet transform methods), extraction routines, and attack simulation modules. This implementation serves as an excellent educational resource for understanding digital watermarking principles and testing algorithm performance under different distortion conditions.