Digital Steganography and F5 Steganography Technique - MATLAB Source Code

This article explores digital steganography and steganography techniques, featuring MATLAB source code for the F5 algorithm. Digital steganography refers to the technique of embedding secret information within digital media, while steganography encompasses the broader process of information concealment in media. These techniques have gained significant popularity in the digital era and are widely applied in domains such as digital watermarking and copyright protection. The implementation employs key MATLAB functions including DCT transformation for JPEG compression, coefficient modification algorithms for data embedding, and extraction routines for secret message recovery. The provided source code demonstrates practical implementation of secret information embedding into JPEG images and subsequent extraction procedures. Through detailed examination of the code structure and algorithm workflow, readers will gain comprehensive understanding of steganography applications and their potential in secure data transmission. The F5 implementation specifically handles quantization table adjustments, coefficient selection logic, and error correction mechanisms to maintain image quality while ensuring data integrity.