Digital Watermarking Algorithm Mini-Program

This mini-program for digital watermarking algorithms aims to provide introductory assistance for those new to digital watermarking technology. Developed in the MATLAB environment, we can implement simple algorithms to achieve basic digital watermarking functionality. Digital watermarking serves as a protection and authentication technique for digital content by embedding specific identification information into digital media, enabling tracking and verification of original content sources. While digital watermarking algorithms involve complex mathematical and signal processing techniques, MATLAB allows us to create simplified implementations using key functions like discrete cosine transform (DCT) for frequency domain embedding, least significant bit (LSB) substitution for spatial domain approaches, and correlation detection for watermark extraction. These implementations typically involve image processing toolboxes for handling cover media, matrix operations for watermark embedding, and statistical analysis for robustness testing. This program provides foundational understanding of digital watermarking principles through practical code examples demonstrating basic embedding/extraction processes, helping beginners grasp core concepts like capacity, transparency, and robustness while learning MATLAB's image processing capabilities.