Affiliations: Department of Computer Science and Information Engineering, Feng Chia University, Taichung 40724, Taiwan, R.O.C. ccc@cs.ccu.edu.tw | Department of Computer Science and Information Engineering, Asia University, Taichung, Taiwan, 41354, R.O.C. Andrewlin@asia.edu.tw | Department of Computer Science and Information Engineering, National Chung Cheng University, Chiayi 621, Taiwan, R.O.C. Andrewlin@asia.edu.tw
Note: [] Address for correspondence: Department of Computer Science and Information Engineering, Feng Chia University, Taichung 40724, Taiwan, R.O.C.
Abstract: Reversible steganography becomes a popular hiding problem in recent years. A reversible steganographicmethod can reconstruct an original image without loss from the stego-image after extracting the embedded data. Unlike traditional reversible methods in which data is hidden in uncompressed images, we propose a reversible scheme for BTC (block truncation coding)-compressed images. The secret data embedded in the compressed image are more difficult to detect than in the uncompressed image. To achieve reversibility, the properties of side matching and BTC-compressed code are applied. The experimental results show that the proposed method is feasible for BTC-compressed images and can embed one more bit in each BTC-encoded block.
Keywords: Reversible data hiding, block truncation coding (BTC), steganography
