Abstract
Numerous steganography algorithms have been proposed to protect messages put into images. LSB, which is an exceedingly prominent means in this field, has been proven to work if the least significant bit of the cover image is replaced with the binary secrets stream. Inspired by LSB, a series of simple but effective methods were proposed, such as LSB-MR, EMD (exploiting modification direction), Sudoku, EMD-2, Turtle Shell, and so on. Nonetheless, an image steganography with larger payload is tremendously needed nowadays. A novel high capacity image data hiding algorithm based on extended EMD-2 and Sudoku hybrid reference matrix is proposed in this study. In this method, each cover pixel pair carries two secret 9-ary notational system numbers. The experiment result shows the embedding rate of the method is up to 3.16 bpp, which is higher than the related schemes and the visual quality desired.
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Acknowledgements
This research work is supported by Provincial Training Projects of Innovation and Entrepreneurship for Undergraduates of Anhui University, which is under Grant No. J1018515315. The corresponding experiment results is with the help of key laboratory of intelligent computing and signal processing of ministry of education.
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Li, XJ., Feng, YQ., Lyu, WL. (2016). A High-Capacity Image Data Hiding Based on Extended EMD-2 Reference Matrix. In: Tan, T., et al. Advances in Image and Graphics Technologies. IGTA 2016. Communications in Computer and Information Science, vol 634. Springer, Singapore. https://doi.org/10.1007/978-981-10-2260-9_7
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DOI: https://doi.org/10.1007/978-981-10-2260-9_7
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