1.

Conference Proceedings
Conference Proceedings
1. Multiple image watermarking using 3D Fresnel holograms with off-axis
Kim, K.-T. ; Choi, J.-H. ; Kim, J.-W. ; Choi, J.-U. ; Kim, E.-S.
Pub. info.: Biometric technology for human identification.  pp.573-584,  2004.  Bellingham, Washington.  SPIE - The International Society of Optical Engineering
Title of ser.: Proceedings of SPIE - the International Society for Optical Engineering
Ser. no.: 5404
2.

Conference Proceedings
Conference Proceedings
2. Implementation of multiple information hiding and real-time extraction system
Choi, J.-H. ; Kim, J.-J. ; Cho, B.-C. ; Lee, M.-H. ; Kim, E.-S.
Pub. info.: Multimedia Systems and Applications V.  pp.192-202,  2002.  Bellingham, Wash..  SPIE-The International Society for Optical Engineering
Title of ser.: Proceedings of SPIE - the International Society for Optical Engineering
Ser. no.: 4861
3.

Conference Proceedings
Conference Proceedings
3. Implementation of ID card system using optodigital information hiding scheme
Kim, J.-J. ; Choi, J.-H. ; Kim, E.-S.
Pub. info.: Security and Watermarking of Multimedia Contents V.  pp.249-259,  2003.  Bellingham, Wash..  SPIE-The International Society for Optical Engineering
Title of ser.: Proceedings of SPIE - the International Society for Optical Engineering
Ser. no.: 5020
4.

Conference Proceedings
Conference Proceedings
4. Robust information hiding and extraction system based on complex phase code and optical correlator
Kim, J.-J. ; Choi, J.-H. ; Kim, E.-S.
Pub. info.: Optical Security and Counterfeit Deterrence Techniques IV.  pp.357-365,  2002.  Bellingham, Wash..  SPIE-The International Society for Optical Engineering
Title of ser.: Proceedings of SPIE - the International Society for Optical Engineering
Ser. no.: 4677