REFERENCES
- Karthik, K. and Hatzinakos, D. Decryption key design for joint fingerprinting and decryption in the sign bit plane for multicast content protection. Int. J. Network Security, 2007, 254–265.
- Feng, J. B, Lin, I. C, Tsai, C. S. and Chu, Y. P. Reversible watermarking: current status and key issues. Int. J. Network Security, 2006, 161–170.
- Lin, P. L. Robust transparent image watermarking system with spatial mechanisms. J. Syst. Softwarer. 2000, 50, 107–116.
- Liu, J. C. and Chen, S. Y. Fast two-layer image watermarking without referring to the original image and watermark. Image and Vision Comput., 2001, 19, 1083–1097.
- Mukherjee, D. P, Maitra, S. and Acton, S. T. Spatial domain digtal watermarking of multimedia objects for buyer authentication. IEEE Trans. Multimedia, 2004, 6, 1–15.
- Wong, P. W. and Memon, N. Secret and public key image watermarking schemes for image authentication and ownership verification, IEEE Trans. Image Process, 2001, 10, 1539–1601.
- Pei, S. C. and Guo, J. M. High-capacity data hiding in halftone images using minimal-error bit searching and least-mean square filter. IEEE Trans. Image Process, 2006, 15, 1665–1679.
- Cox, I. J, Kilian, J., Leighton, F. T. and Shamoon, T. Secure spread spectrum watermarking for multimedia. IEEE Trans. Image Process, 1997, 6, 1673–1687.
- Chu, W. C. DCT – based image watermarking using subsampling. IEEE Trans. Multimedia., 2003, 5, 34–38.
- Das, T. K. and Maitra, S. Cryptanalysis of correlation-based watermarking schemes using single watermarked copy. IEEE Signal Processing Lett, 2004, 11, 446–449.
- Das, T. K., and Maitra, S. and Zhou, J. Y. Cryptanalysis of chu’s dct based watermarking scheme. IEEE Trans. Multimedia, 2006, 8, 629–632.
- Lu, C. S., Huang, S. K., Sze, C. J. and Liao, H. Y. M. Cocktail watermarking for digital image protection. IEEE Trans. Multimedia, 2000, 2, 209–224.
- Wong, H. W., Au, O. C. and Yeung, Y. M. A novel blind multiple watermarking technique for images. IEEE Trans. Circuits Syst. Video Technol. 2003, 13, 813–830.
- Chen, L. H. and Lin, J. J. Mean quantization based image watermarking. Image Vision Comput., 2003, 21, 717–727.
- Giakoumaki, A., Pavlopoulos, S. and Koutsouris, D. Multiple image watermarking applied to health information management. IEEE Trans. Inf. Technol. Biomed., 2006, 10, 722–732.
- Hsia, S. C., Jou, I. C. and Hwang, S. M. A gray level watermarking algorithm using double layer hidden approach. IEICE Trans Funda., 2002, E85-A, 463–471.
- Shih, F. Y. and Wu, S. Y. T. Combinational image watermarking in the spatial and frequency domains. Pattern Recognit., 2003, 36, 969–975.
- Chang, C. C, Hwang, K. F and Hwang, M. S. A feature-oriented copyright owner proving technique for still images. Int. J. Software Eng. Knowl. Eng. , 2002, 12, 317–330.
- Chang, C. C., Hwang, K. F. and Hwang, M. S. A robust authentication scheme for protecting copyrights of images and graphics. IEE Proc. Vis., Image Signal Process, 2002, 149, 43–50.
- Chen, T. H., Horng, G. G. and Lee, W. B. A publicly verifiable copyrightproving scheme resistant to malicious attacks. IEEE Trans. Ind. Electron., 2005, 52, 327–334.
- Huang, H. C., Wang, F. H. and Pan, J. S. A VQ – based robust multiwatermarking algorithm. IEICE Trans. Fundm, 2002, E85-A, 1719–1726.
- Lee, W. B. and Chen, T. H. A public verifiable copy protection technique for still images. J of Syst. Software, 2002, 87, 195–204.