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Sudoku, a simple and fun game of logic, has been used for steganography to conceal messages into a digital image recently. Chang et al. adapted the idea of smallest Manhattan distance, embedding secret messages into the neighbors of the located element according to a given Sudoku solution. Hong et al. improved Chang et al.psilas technique by introducing(More)
In this paper, a reversible data hiding scheme based on histogram-shifting of prediction errors (HSPE) is proposed. Two-stage structures, the prediction stage and the error modification stage, are employed in our scheme. In the prediction stage, value of each pixel is predicted, and the error of the predicted value is obtained. In the error modification(More)
A lossless or reversible steganography is defined as an original image can be completely recovered from the stego-image after the embedded data has been extracted. This technique has been focused on spatial uncompressed domain recently, and is considered more challenging to carry out in the compressed domain. In this paper, we propose a lossless, compressed(More)
In this paper, we propose a revised version of information hiding scheme using Sudoku. The original work was proposed by Chang et al. in 2008, and their work was inspired by Zhang and Wang's method and Sudoku solutions. Chang et al. successfully used Sudoku solutions to guide cover pixels to modify pixel values so that secret messages can be embedded.(More)
Histogram shifting is a popular reversible data hiding technique where image distortion is low. However, it is limited by smaller hiding capacity. In this paper, a high payload scheme is proposed for a histogram shifting reversible data hiding which is based on multilevel modification of prediction errors. For any 8-bit grayscale image, only a small amount(More)