Reversible Data Hiding in Encrypted Images based on Pixel Prediction and\n Bit-plane Compression

Abstract

Reversible data hiding in encrypted images (RDHEI) receives growing attention\nbecause it protects the content of the original image while the embedded data\ncan be accurately extracted and the original image can be reconstructed\nlossless. To make full use of the correlation of the adjacent pixels, this\npaper proposes an RDHEI scheme based on pixel prediction and bit-plane\ncompression. Firstly, to vacate room for data embedding, the prediction error\nof the original image is calculated and used for bit-plane rearrangement and\ncompression. Then, the image after vacating room is encrypted by a stream\ncipher. Finally, the additional data is embedded in the vacated room by\nmulti-LSB substitution. Experimental results show that the embedding capacity\nof the proposed method outperforms the state-of-the-art methods.\n