1. USC-SIPI image database. http://sipi.usc.edu/database.
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3. Reversible watermark using the difference expansion of a generalized integer transform;Alattar;IEEE Trans. Image Process.,2004
4. Lossless generalized-lsb data embedding;Celik;IEEE Trans. Image Process.,2005
5. Reversible image data hiding based on gradient adjusted prediction;Fallahpour;IEICE Electron Express,2008