A. K. Aggarwal, S. K. Kaura, A. K. Sharma, R. Kumar,
and D. P. Chhachhia, "Interferometry based security hologram readable with an encoded key hologram,"Indian J. Pure Appl. Phys. 42, 816-819 (2004).

T. Wang, Y. Li, S. Yang, H. Feng, S. Zhang, S. Fan, N. K. Bao, W. H. Wong, H. P. Chan, and P. S. Chung, "Digital pixel cryptogram in e-beam holography,"
in Practical Holography XIV and Holographic Materials VI, S.A.Benton, S.H.Stevenson,
and T.J.Trout,
eds., Proc. SPIE 3956, 177-183 (2000).

N. K. Bao, W. H. Wong, T. Wang, Y. Li, S. Yang, S. Zhang, S. Fan, and H. Wen,
"Cryptogram in digital pixel holography," in Proceedings of 1999 International Workshop on Cryptographic Techniques and E-Commerce, M.Blum and C.H.Lee,
eds. (City University, Hong Kong, Kowloon, Hong Kong, 1999),
pp. 286-290.

V. I. Girnyk, V. I. Grygoruk, I. S. Borisov, and S. A. Kostyukevych,
"Stereographic and animated rainbow diffractive images in optical security,"
in Practical Holography XVIII, T.H.Jeong and H.I.Bjelkhagen,
eds., Proc. SPIE 5290, 179-189 (2003).

M. Born and E. Wolf, Principles of Optics (Cambridge University Press, Cambridge, 2003).

F. Fetthauer, C. Stroot, and O. Bryngdahl,
"On the quantization of holograms with the iterative Fourier transform algorithm," Opt. Commun. 136, 7-10 (1997).

[CrossRef]

T. Wang, Y. Li, S. Yang, H. Feng, S. Zhang, S. Fan, N. K. Bao, W. H. Wong, H. P. Chan, and P. S. Chung, "Digital pixel cryptogram in e-beam holography,"
in Practical Holography XIV and Holographic Materials VI, S.A.Benton, S.H.Stevenson,
and T.J.Trout,
eds., Proc. SPIE 3956, 177-183 (2000).

C. K. Lee, J. W. Wu, S. L. Yeh, C. W. Tu, Y. A. Han, E. H. Liao, L. Y. Chang, I. E. Tsai, H. H. Lin, J. C. Hsieh, and J. T. Lee, "Optical configuration and color-representation range of a variable-pitch dot matrix holographic printer,"Appl. Opt. 39, 40-53 (2000).

[CrossRef]

A. K. Aggarwal, S. K. Kaura, A. K. Sharma, R. Kumar,
and D. P. Chhachhia, "Interferometry based security hologram readable with an encoded key hologram,"Indian J. Pure Appl. Phys. 42, 816-819 (2004).

Y. T. Lu and S. Chi, "Compact, reliable asymmetric optical configuration for cost-effective fabrication of multiplex dot matrix hologram in anti-counterfeiting applications," Optik. 114, 161-167 (2003).

[CrossRef]

Y. T. Lu, H. Y. Lin, and S. Chi, "A non-optical method for making dot-matrix hologram," in Practical Holography XIV and Holographic Materials VI, S.A.Benton, S.H.Stevenson, and T.J.Trout,
eds., Proc. SPIE 3956, 217-225 (2000).

T. Wang, Y. Li, S. Yang, H. Feng, S. Zhang, S. Fan, N. K. Bao, W. H. Wong, H. P. Chan, and P. S. Chung, "Digital pixel cryptogram in e-beam holography,"
in Practical Holography XIV and Holographic Materials VI, S.A.Benton, S.H.Stevenson,
and T.J.Trout,
eds., Proc. SPIE 3956, 177-183 (2000).

T. Wang, Y. Li, S. Yang, H. Feng, S. Zhang, S. Fan, N. K. Bao, W. H. Wong, H. P. Chan, and P. S. Chung, "Digital pixel cryptogram in e-beam holography,"
in Practical Holography XIV and Holographic Materials VI, S.A.Benton, S.H.Stevenson,
and T.J.Trout,
eds., Proc. SPIE 3956, 177-183 (2000).

N. K. Bao, W. H. Wong, T. Wang, Y. Li, S. Yang, S. Zhang, S. Fan, and H. Wen,
"Cryptogram in digital pixel holography," in Proceedings of 1999 International Workshop on Cryptographic Techniques and E-Commerce, M.Blum and C.H.Lee,
eds. (City University, Hong Kong, Kowloon, Hong Kong, 1999),
pp. 286-290.

T. Wang, Y. Li, S. Yang, H. Feng, S. Zhang, S. Fan, N. K. Bao, W. H. Wong, H. P. Chan, and P. S. Chung, "Digital pixel cryptogram in e-beam holography,"
in Practical Holography XIV and Holographic Materials VI, S.A.Benton, S.H.Stevenson,
and T.J.Trout,
eds., Proc. SPIE 3956, 177-183 (2000).

F. Fetthauer, C. Stroot, and O. Bryngdahl,
"On the quantization of holograms with the iterative Fourier transform algorithm," Opt. Commun. 136, 7-10 (1997).

[CrossRef]

M. Skeren, I. Richter, and P. Fiala,
"Iterative Fourier transform algorithm: comparison of various approaches," J. Mod. Opt. 49, 1851-1870 (2002).

[CrossRef]

M. Skeren,I. Richter, and P. Fiala,
"Design and optimization considerations of multi-focus phase-only diffractive elements," in Wave-Optical Systems Engineering II, F.Wyrowski,
ed., Proc. SPIE 5182, 233-242 (2003).

V. I. Girnyk, V. I. Grygoruk, I. S. Borisov, and S. A. Kostyukevych,
"Stereographic and animated rainbow diffractive images in optical security,"
in Practical Holography XVIII, T.H.Jeong and H.I.Bjelkhagen,
eds., Proc. SPIE 5290, 179-189 (2003).

V. I. Girnyk, V. I. Grygoruk, I. S. Borisov, and S. A. Kostyukevych,
"Stereographic and animated rainbow diffractive images in optical security,"
in Practical Holography XVIII, T.H.Jeong and H.I.Bjelkhagen,
eds., Proc. SPIE 5290, 179-189 (2003).

C. K. Lee, J. W. Wu, S. L. Yeh, C. W. Tu, Y. A. Han, E. H. Liao, L. Y. Chang, I. E. Tsai, H. H. Lin, J. C. Hsieh, and J. T. Lee, "Optical configuration and color-representation range of a variable-pitch dot matrix holographic printer,"Appl. Opt. 39, 40-53 (2000).

[CrossRef]

C. W. Tu, Y. A. Han, C. K. Lee, J. W. J. Wu, A. S.
T. Peng, E. H.
Z. Liao, and J. T. Lee,
"Expanding a color presentation range with true-color dot matrix holograms," in Practical Holography XIII, S.A.Benton, ed., Proc. SPIE 3637, 130-140 (1999).

C. K. Lee, J. W. Wu, S. L. Yeh, C. W. Tu, Y. A. Han, E. H. Liao, L. Y. Chang, I. E. Tsai, H. H. Lin, J. C. Hsieh, and J. T. Lee, "Optical configuration and color-representation range of a variable-pitch dot matrix holographic printer,"Appl. Opt. 39, 40-53 (2000).

[CrossRef]

C. K. Lee, J. C. T. Hsieh, J. W.
J. Wu, and J. T. Lee,
"Optical design and implementation of a variable pitch dot matrix writer," in Practical Holography XIII, S.A.Benton, ed., Proc. SPIE 3637, 119-129 (1999).

L. Yaotang, W. Tianji, Y. Shining, Z. Shichao, F. Shaowu, and W. Huangrong,
"Theoretical and experimental study of dot matrix hologram,"
in Holographic Displays and Optical Elements II, D.HsuandJ.H.Hong,
eds., Proc. SPIE 3559, 121-129 (1998).

A. K. Aggarwal, S. K. Kaura, A. K. Sharma, R. Kumar,
and D. P. Chhachhia, "Interferometry based security hologram readable with an encoded key hologram,"Indian J. Pure Appl. Phys. 42, 816-819 (2004).

V. I. Girnyk, V. I. Grygoruk, I. S. Borisov, and S. A. Kostyukevych,
"Stereographic and animated rainbow diffractive images in optical security,"
in Practical Holography XVIII, T.H.Jeong and H.I.Bjelkhagen,
eds., Proc. SPIE 5290, 179-189 (2003).

A. K. Aggarwal, S. K. Kaura, A. K. Sharma, R. Kumar,
and D. P. Chhachhia, "Interferometry based security hologram readable with an encoded key hologram,"Indian J. Pure Appl. Phys. 42, 816-819 (2004).

C. K. Lee, J. W. Wu, S. L. Yeh, C. W. Tu, Y. A. Han, E. H. Liao, L. Y. Chang, I. E. Tsai, H. H. Lin, J. C. Hsieh, and J. T. Lee, "Optical configuration and color-representation range of a variable-pitch dot matrix holographic printer,"Appl. Opt. 39, 40-53 (2000).

[CrossRef]

C. K. Lee, J. C. T. Hsieh, J. W.
J. Wu, and J. T. Lee,
"Optical design and implementation of a variable pitch dot matrix writer," in Practical Holography XIII, S.A.Benton, ed., Proc. SPIE 3637, 119-129 (1999).

C. W. Tu, Y. A. Han, C. K. Lee, J. W. J. Wu, A. S.
T. Peng, E. H.
Z. Liao, and J. T. Lee,
"Expanding a color presentation range with true-color dot matrix holograms," in Practical Holography XIII, S.A.Benton, ed., Proc. SPIE 3637, 130-140 (1999).

C. K. Lee, J. W. Wu, S. L. Yeh, C. W. Tu, Y. A. Han, E. H. Liao, L. Y. Chang, I. E. Tsai, H. H. Lin, J. C. Hsieh, and J. T. Lee, "Optical configuration and color-representation range of a variable-pitch dot matrix holographic printer,"Appl. Opt. 39, 40-53 (2000).

[CrossRef]

C. K. Lee, J. C. T. Hsieh, J. W.
J. Wu, and J. T. Lee,
"Optical design and implementation of a variable pitch dot matrix writer," in Practical Holography XIII, S.A.Benton, ed., Proc. SPIE 3637, 119-129 (1999).

C. W. Tu, Y. A. Han, C. K. Lee, J. W. J. Wu, A. S.
T. Peng, E. H.
Z. Liao, and J. T. Lee,
"Expanding a color presentation range with true-color dot matrix holograms," in Practical Holography XIII, S.A.Benton, ed., Proc. SPIE 3637, 130-140 (1999).

T. Wang, Y. Li, S. Yang, H. Feng, S. Zhang, S. Fan, N. K. Bao, W. H. Wong, H. P. Chan, and P. S. Chung, "Digital pixel cryptogram in e-beam holography,"
in Practical Holography XIV and Holographic Materials VI, S.A.Benton, S.H.Stevenson,
and T.J.Trout,
eds., Proc. SPIE 3956, 177-183 (2000).

N. K. Bao, W. H. Wong, T. Wang, Y. Li, S. Yang, S. Zhang, S. Fan, and H. Wen,
"Cryptogram in digital pixel holography," in Proceedings of 1999 International Workshop on Cryptographic Techniques and E-Commerce, M.Blum and C.H.Lee,
eds. (City University, Hong Kong, Kowloon, Hong Kong, 1999),
pp. 286-290.

C. K. Lee, J. W. Wu, S. L. Yeh, C. W. Tu, Y. A. Han, E. H. Liao, L. Y. Chang, I. E. Tsai, H. H. Lin, J. C. Hsieh, and J. T. Lee, "Optical configuration and color-representation range of a variable-pitch dot matrix holographic printer,"Appl. Opt. 39, 40-53 (2000).

[CrossRef]

C. W. Tu, Y. A. Han, C. K. Lee, J. W. J. Wu, A. S.
T. Peng, E. H.
Z. Liao, and J. T. Lee,
"Expanding a color presentation range with true-color dot matrix holograms," in Practical Holography XIII, S.A.Benton, ed., Proc. SPIE 3637, 130-140 (1999).

C. K. Lee, J. W. Wu, S. L. Yeh, C. W. Tu, Y. A. Han, E. H. Liao, L. Y. Chang, I. E. Tsai, H. H. Lin, J. C. Hsieh, and J. T. Lee, "Optical configuration and color-representation range of a variable-pitch dot matrix holographic printer,"Appl. Opt. 39, 40-53 (2000).

[CrossRef]

Y. T. Lu, H. Y. Lin, and S. Chi, "A non-optical method for making dot-matrix hologram," in Practical Holography XIV and Holographic Materials VI, S.A.Benton, S.H.Stevenson, and T.J.Trout,
eds., Proc. SPIE 3956, 217-225 (2000).

S. L. Yeh and S. T. Lin, "Dot-matrix hologram with hidden image," Opt. Eng. 41, 314-318 (2002).

S. Liu, X. Zhang, C. Liu, and P. Zhu, "Coded holograms for anticounterfeiting using Fourier transform technique on dot-matrix holograms," in Holography, Diffractive Optics,
and Applications, D.Hsu, J.Chen,
and Y. Sheng, eds., Proc. SPIE 4924, 134-139 (2002).

S. Liu, X. Zhang, C. Liu, and P. Zhu, "Coded holograms for anticounterfeiting using Fourier transform technique on dot-matrix holograms," in Holography, Diffractive Optics,
and Applications, D.Hsu, J.Chen,
and Y. Sheng, eds., Proc. SPIE 4924, 134-139 (2002).

Y. T. Lu and S. Chi, "Compact, reliable asymmetric optical configuration for cost-effective fabrication of multiplex dot matrix hologram in anti-counterfeiting applications," Optik. 114, 161-167 (2003).

[CrossRef]

Y. T. Lu, H. Y. Lin, and S. Chi, "A non-optical method for making dot-matrix hologram," in Practical Holography XIV and Holographic Materials VI, S.A.Benton, S.H.Stevenson, and T.J.Trout,
eds., Proc. SPIE 3956, 217-225 (2000).

A. E. Macgregor,
"Computer generated holograms from dot matrix and laser printers," Am.
J. Phys. 60, 839-46 (1992).

[CrossRef]

C. W. Tu, Y. A. Han, C. K. Lee, J. W. J. Wu, A. S.
T. Peng, E. H.
Z. Liao, and J. T. Lee,
"Expanding a color presentation range with true-color dot matrix holograms," in Practical Holography XIII, S.A.Benton, ed., Proc. SPIE 3637, 130-140 (1999).

M. Skeren, I. Richter, and P. Fiala,
"Iterative Fourier transform algorithm: comparison of various approaches," J. Mod. Opt. 49, 1851-1870 (2002).

[CrossRef]

M. Skeren,I. Richter, and P. Fiala,
"Design and optimization considerations of multi-focus phase-only diffractive elements," in Wave-Optical Systems Engineering II, F.Wyrowski,
ed., Proc. SPIE 5182, 233-242 (2003).

L. Yaotang, W. Tianji, Y. Shining, Z. Shichao, F. Shaowu, and W. Huangrong,
"Theoretical and experimental study of dot matrix hologram,"
in Holographic Displays and Optical Elements II, D.HsuandJ.H.Hong,
eds., Proc. SPIE 3559, 121-129 (1998).

A. K. Aggarwal, S. K. Kaura, A. K. Sharma, R. Kumar,
and D. P. Chhachhia, "Interferometry based security hologram readable with an encoded key hologram,"Indian J. Pure Appl. Phys. 42, 816-819 (2004).

L. Yaotang, W. Tianji, Y. Shining, Z. Shichao, F. Shaowu, and W. Huangrong,
"Theoretical and experimental study of dot matrix hologram,"
in Holographic Displays and Optical Elements II, D.HsuandJ.H.Hong,
eds., Proc. SPIE 3559, 121-129 (1998).

L. Yaotang, W. Tianji, Y. Shining, Z. Shichao, F. Shaowu, and W. Huangrong,
"Theoretical and experimental study of dot matrix hologram,"
in Holographic Displays and Optical Elements II, D.HsuandJ.H.Hong,
eds., Proc. SPIE 3559, 121-129 (1998).

M. Skeren, I. Richter, and P. Fiala,
"Iterative Fourier transform algorithm: comparison of various approaches," J. Mod. Opt. 49, 1851-1870 (2002).

[CrossRef]

M. Skeren,I. Richter, and P. Fiala,
"Design and optimization considerations of multi-focus phase-only diffractive elements," in Wave-Optical Systems Engineering II, F.Wyrowski,
ed., Proc. SPIE 5182, 233-242 (2003).

F. Fetthauer, C. Stroot, and O. Bryngdahl,
"On the quantization of holograms with the iterative Fourier transform algorithm," Opt. Commun. 136, 7-10 (1997).

[CrossRef]

L. Yaotang, W. Tianji, Y. Shining, Z. Shichao, F. Shaowu, and W. Huangrong,
"Theoretical and experimental study of dot matrix hologram,"
in Holographic Displays and Optical Elements II, D.HsuandJ.H.Hong,
eds., Proc. SPIE 3559, 121-129 (1998).

C. K. Lee, J. W. Wu, S. L. Yeh, C. W. Tu, Y. A. Han, E. H. Liao, L. Y. Chang, I. E. Tsai, H. H. Lin, J. C. Hsieh, and J. T. Lee, "Optical configuration and color-representation range of a variable-pitch dot matrix holographic printer,"Appl. Opt. 39, 40-53 (2000).

[CrossRef]

C. K. Lee, J. W. Wu, S. L. Yeh, C. W. Tu, Y. A. Han, E. H. Liao, L. Y. Chang, I. E. Tsai, H. H. Lin, J. C. Hsieh, and J. T. Lee, "Optical configuration and color-representation range of a variable-pitch dot matrix holographic printer,"Appl. Opt. 39, 40-53 (2000).

[CrossRef]

C. W. Tu, Y. A. Han, C. K. Lee, J. W. J. Wu, A. S.
T. Peng, E. H.
Z. Liao, and J. T. Lee,
"Expanding a color presentation range with true-color dot matrix holograms," in Practical Holography XIII, S.A.Benton, ed., Proc. SPIE 3637, 130-140 (1999).

R. L. van Renesse, Optical Document Security (Artech House, London, 1994).

T. Wang, Y. Li, S. Yang, H. Feng, S. Zhang, S. Fan, N. K. Bao, W. H. Wong, H. P. Chan, and P. S. Chung, "Digital pixel cryptogram in e-beam holography,"
in Practical Holography XIV and Holographic Materials VI, S.A.Benton, S.H.Stevenson,
and T.J.Trout,
eds., Proc. SPIE 3956, 177-183 (2000).

N. K. Bao, W. H. Wong, T. Wang, Y. Li, S. Yang, S. Zhang, S. Fan, and H. Wen,
"Cryptogram in digital pixel holography," in Proceedings of 1999 International Workshop on Cryptographic Techniques and E-Commerce, M.Blum and C.H.Lee,
eds. (City University, Hong Kong, Kowloon, Hong Kong, 1999),
pp. 286-290.

N. K. Bao, W. H. Wong, T. Wang, Y. Li, S. Yang, S. Zhang, S. Fan, and H. Wen,
"Cryptogram in digital pixel holography," in Proceedings of 1999 International Workshop on Cryptographic Techniques and E-Commerce, M.Blum and C.H.Lee,
eds. (City University, Hong Kong, Kowloon, Hong Kong, 1999),
pp. 286-290.

M. Born and E. Wolf, Principles of Optics (Cambridge University Press, Cambridge, 2003).

T. Wang, Y. Li, S. Yang, H. Feng, S. Zhang, S. Fan, N. K. Bao, W. H. Wong, H. P. Chan, and P. S. Chung, "Digital pixel cryptogram in e-beam holography,"
in Practical Holography XIV and Holographic Materials VI, S.A.Benton, S.H.Stevenson,
and T.J.Trout,
eds., Proc. SPIE 3956, 177-183 (2000).

N. K. Bao, W. H. Wong, T. Wang, Y. Li, S. Yang, S. Zhang, S. Fan, and H. Wen,
"Cryptogram in digital pixel holography," in Proceedings of 1999 International Workshop on Cryptographic Techniques and E-Commerce, M.Blum and C.H.Lee,
eds. (City University, Hong Kong, Kowloon, Hong Kong, 1999),
pp. 286-290.

C. K. Lee, J. W. Wu, S. L. Yeh, C. W. Tu, Y. A. Han, E. H. Liao, L. Y. Chang, I. E. Tsai, H. H. Lin, J. C. Hsieh, and J. T. Lee, "Optical configuration and color-representation range of a variable-pitch dot matrix holographic printer,"Appl. Opt. 39, 40-53 (2000).

[CrossRef]

C. W. Tu, Y. A. Han, C. K. Lee, J. W. J. Wu, A. S.
T. Peng, E. H.
Z. Liao, and J. T. Lee,
"Expanding a color presentation range with true-color dot matrix holograms," in Practical Holography XIII, S.A.Benton, ed., Proc. SPIE 3637, 130-140 (1999).

C. K. Lee, J. C. T. Hsieh, J. W.
J. Wu, and J. T. Lee,
"Optical design and implementation of a variable pitch dot matrix writer," in Practical Holography XIII, S.A.Benton, ed., Proc. SPIE 3637, 119-129 (1999).

N. K. Bao, W. H. Wong, T. Wang, Y. Li, S. Yang, S. Zhang, S. Fan, and H. Wen,
"Cryptogram in digital pixel holography," in Proceedings of 1999 International Workshop on Cryptographic Techniques and E-Commerce, M.Blum and C.H.Lee,
eds. (City University, Hong Kong, Kowloon, Hong Kong, 1999),
pp. 286-290.

T. Wang, Y. Li, S. Yang, H. Feng, S. Zhang, S. Fan, N. K. Bao, W. H. Wong, H. P. Chan, and P. S. Chung, "Digital pixel cryptogram in e-beam holography,"
in Practical Holography XIV and Holographic Materials VI, S.A.Benton, S.H.Stevenson,
and T.J.Trout,
eds., Proc. SPIE 3956, 177-183 (2000).

L. Yaotang, W. Tianji, Y. Shining, Z. Shichao, F. Shaowu, and W. Huangrong,
"Theoretical and experimental study of dot matrix hologram,"
in Holographic Displays and Optical Elements II, D.HsuandJ.H.Hong,
eds., Proc. SPIE 3559, 121-129 (1998).

S. L. Yeh and S. T. Lin, "Dot-matrix hologram with hidden image," Opt. Eng. 41, 314-318 (2002).

C. K. Lee, J. W. Wu, S. L. Yeh, C. W. Tu, Y. A. Han, E. H. Liao, L. Y. Chang, I. E. Tsai, H. H. Lin, J. C. Hsieh, and J. T. Lee, "Optical configuration and color-representation range of a variable-pitch dot matrix holographic printer,"Appl. Opt. 39, 40-53 (2000).

[CrossRef]

N. K. Bao, W. H. Wong, T. Wang, Y. Li, S. Yang, S. Zhang, S. Fan, and H. Wen,
"Cryptogram in digital pixel holography," in Proceedings of 1999 International Workshop on Cryptographic Techniques and E-Commerce, M.Blum and C.H.Lee,
eds. (City University, Hong Kong, Kowloon, Hong Kong, 1999),
pp. 286-290.

T. Wang, Y. Li, S. Yang, H. Feng, S. Zhang, S. Fan, N. K. Bao, W. H. Wong, H. P. Chan, and P. S. Chung, "Digital pixel cryptogram in e-beam holography,"
in Practical Holography XIV and Holographic Materials VI, S.A.Benton, S.H.Stevenson,
and T.J.Trout,
eds., Proc. SPIE 3956, 177-183 (2000).

S. Liu, X. Zhang, C. Liu, and P. Zhu, "Coded holograms for anticounterfeiting using Fourier transform technique on dot-matrix holograms," in Holography, Diffractive Optics,
and Applications, D.Hsu, J.Chen,
and Y. Sheng, eds., Proc. SPIE 4924, 134-139 (2002).

S. Liu, X. Zhang, C. Liu, and P. Zhu, "Coded holograms for anticounterfeiting using Fourier transform technique on dot-matrix holograms," in Holography, Diffractive Optics,
and Applications, D.Hsu, J.Chen,
and Y. Sheng, eds., Proc. SPIE 4924, 134-139 (2002).

A. E. Macgregor,
"Computer generated holograms from dot matrix and laser printers," Am.
J. Phys. 60, 839-46 (1992).

[CrossRef]

C. K. Lee, J. W. Wu, S. L. Yeh, C. W. Tu, Y. A. Han, E. H. Liao, L. Y. Chang, I. E. Tsai, H. H. Lin, J. C. Hsieh, and J. T. Lee, "Optical configuration and color-representation range of a variable-pitch dot matrix holographic printer,"Appl. Opt. 39, 40-53 (2000).

[CrossRef]

A. K. Aggarwal, S. K. Kaura, A. K. Sharma, R. Kumar,
and D. P. Chhachhia, "Interferometry based security hologram readable with an encoded key hologram,"Indian J. Pure Appl. Phys. 42, 816-819 (2004).

M. Skeren, I. Richter, and P. Fiala,
"Iterative Fourier transform algorithm: comparison of various approaches," J. Mod. Opt. 49, 1851-1870 (2002).

[CrossRef]

F. Fetthauer, C. Stroot, and O. Bryngdahl,
"On the quantization of holograms with the iterative Fourier transform algorithm," Opt. Commun. 136, 7-10 (1997).

[CrossRef]

Y. T. Lu and S. Chi, "Compact, reliable asymmetric optical configuration for cost-effective fabrication of multiplex dot matrix hologram in anti-counterfeiting applications," Optik. 114, 161-167 (2003).

[CrossRef]

S. Liu, X. Zhang, C. Liu, and P. Zhu, "Coded holograms for anticounterfeiting using Fourier transform technique on dot-matrix holograms," in Holography, Diffractive Optics,
and Applications, D.Hsu, J.Chen,
and Y. Sheng, eds., Proc. SPIE 4924, 134-139 (2002).

Y. T. Lu, H. Y. Lin, and S. Chi, "A non-optical method for making dot-matrix hologram," in Practical Holography XIV and Holographic Materials VI, S.A.Benton, S.H.Stevenson, and T.J.Trout,
eds., Proc. SPIE 3956, 217-225 (2000).

C. W. Tu, Y. A. Han, C. K. Lee, J. W. J. Wu, A. S.
T. Peng, E. H.
Z. Liao, and J. T. Lee,
"Expanding a color presentation range with true-color dot matrix holograms," in Practical Holography XIII, S.A.Benton, ed., Proc. SPIE 3637, 130-140 (1999).

C. K. Lee, J. C. T. Hsieh, J. W.
J. Wu, and J. T. Lee,
"Optical design and implementation of a variable pitch dot matrix writer," in Practical Holography XIII, S.A.Benton, ed., Proc. SPIE 3637, 119-129 (1999).

L. Yaotang, W. Tianji, Y. Shining, Z. Shichao, F. Shaowu, and W. Huangrong,
"Theoretical and experimental study of dot matrix hologram,"
in Holographic Displays and Optical Elements II, D.HsuandJ.H.Hong,
eds., Proc. SPIE 3559, 121-129 (1998).

R. L. van Renesse, Optical Document Security (Artech House, London, 1994).

Van Renesse, ed., Methods for Computer Design of Diffractive Optical Elements (Wiley, New York, 2001).

N. K. Bao, W. H. Wong, T. Wang, Y. Li, S. Yang, S. Zhang, S. Fan, and H. Wen,
"Cryptogram in digital pixel holography," in Proceedings of 1999 International Workshop on Cryptographic Techniques and E-Commerce, M.Blum and C.H.Lee,
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