Reversible Information Hiding

This document presents a data hiding algorithm that achieves reversible information concealment through LSB (Least Significant Bit) flipping. The algorithm demonstrates remarkable imperceptibility, meaning the embedded data remains invisible to human visual perception. Specifically designed for digital media applications such as images and audio files, this technique enables the concealment of critical information while maintaining minimal impact on original data quality. The implementation typically involves modifying the least significant bits of pixel values or audio samples using bitwise operations, where data embedding can be controlled through threshold parameters and recovery mechanisms. Modern applications include privacy protection, digital watermarking, and secure communication systems where reversible data extraction is essential. Key functions in the algorithm involve bit-plane manipulation, parity checking, and difference expansion techniques to ensure perfect reconstruction of original media after data extraction.