1. 1. J. Tian, “Reversible data embedding using a difference expansion,” IEEE Trans. Circuits Syst. Video Technol., vol. 13, no. 8, pp. 890–896, Aug. 2003
   2. Z. Ni, Y. Q. Shi, N. Ansari, andW. Su, “Reversible data hiding,” IEEE Trans. Circuits Syst. Video Technol., vol. 16, no. 3, pp. 354–362, Mar.2006.
   3. D. Coltuc and J.-M. Chassery, “Very fast watermarking by reversible contrast mapping,” IEEE Signal Process. Lett., vol. 14, no. 4, pp. 255–258, Apr. 2007
   4. V. Sachnev, H. J. Kim, J. Nam, S. Suresh, and Y. Q. Shi, “Reversible watermarking algorithm using sorting and prediction,” IEEE Trans.Circuits Syst. Video Technol., vol. 19, no. 7, pp. 989–999, Jul. 2009.
   5. Z. Zhao,H.Luo,Z.-M. Lu, and J.-S. Pan, “Reversible data hiding based on multilevel histogram modification and sequential recovery,” Int. J.Electron. Commun. (AEÜ), vol. 65, pp. 814–826, 2011.
   6. H. T.Wu and J. Huang, “Reversible image watermarking on prediction error by efficient histogram modification,” Signal Process., vol. 92, no.12, pp. 3000–3009, Dec. 2012.
   7. Y. Yang, X. Sun, H. Yang, C.-T. Li, and R. Xiao, “A contrast-sensitive reversible visible image watermarking technique,” IEEE Trans. CircuitsSyst. Video Technol., vol. 19, no. 5, pp. 656–667, May 2009.
   8. H.T.WuandJ.Huang,“Reversibleimagewatermarkingonpr ediction error by efficien this to gram modification, ”SignalProcess.,vol.92,no. 12, pp. 3000–3009, Dec. 2012.
   9. Y.Yang,X.Sun,H.Yang,C.-T.Li,andR.Xiao, “Acontrastsensitive reversible visible image watermarking technique,” IEEE Trans. CircuitsSyst.VideoTechnol.,vol.19,no.5,pp.656– 667,May2009
   10. J. A. Stark, “Adaptive image contrast enhancement using generalizations of histogram equalization,” IEEE Trans. Image Process., vol. 9, no. 5, pp. 889–896, May 2000
   11. P. G. Howard, F. Kossentini, B. Martins, S. Forchhammer, and W. J. Rucklidge,“TheemergingJBIG2standard,”IEEETrans.Circu itsSyst. Video Technol., vol. 8, no. 7, pp. 838–848, Jul. 1998.