Study on Separable Reversible Data Hiding in Encrypted Images

With the increasing demand for secure image transmission, reversible data hiding in encrypted images has emerged as a promising technique. Reversible data hiding in encrypted images allows the data hider to embed additional data into the encrypted image without causing any distortion to the original image. Separable reversible data hiding is a special category of reversible data hiding, which allows the data hider to extract the embedded data without decrypting the image. This paper is a study of separable reversible data hiding in encrypted images. Different techniques, algorithms, and methodologies used in non-separable as well as separable reversible data hiding are discussed.