A Secure and Robust Steganographic Method Using RDH Algorithm Based On Automatic Contrast Enhancement Method

Huge increase in multimedia data on various social media platforms leads to data security with information hiding. In traditional data hiding schemes prime focus is given on enhancement of embedding payload capacity but very less focus has given on visual image quality. However, security is an important aspect in existing reversible data hiding techniques. This article presents secured reversible data hiding along with automatic contrast enhancement algorithm (SRDHACEM) to provide superior image visual quality. The proposed approach splits the cover image into region of interest (ROI) and region of non-interest (NROI) based on Pixel Concentration Ratio (PCR). It automatically enlarges the grayscale histogram to improve embedding capacity of ROI and visual quality of image. The proposed method adopts RC4 data encryption algorithm to improve the security and robustness of proposed RDH algorithm. The investigational results show that proposed scheme provides superior embedding capacity and visual quality of image.