Various Digital Watermarking Attacks

This article discusses various attack methods on digital watermarks, including but not limited to rotation attacks, translation attacks, blurring attacks, and other common attack types. The content provides MATLAB implementations that simulate these attacks, featuring code for both watermark embedding and extraction processes. The implementation includes key functions for handling geometric transformations (rotation and translation), filtering operations for blur attacks, and noise injection techniques. Each code module is designed with clear input/output parameters and includes detailed operational guidelines and examples to help readers better understand the underlying techniques. The code structure allows for easy modification of attack parameters and supports experimental validation of watermark robustness. Whether for researching digital watermarking technology or conducting simulation experiments, this article provides valuable reference material with practical, ready-to-use code implementations.