Abstract

We demonstrate a smart image-packaging optical technique that uses what we believe is a new concept to save byte space when transmitting data. The technique supports a large set of images mapped into modulated speckle patterns. Then, they are multiplexed into a single package. This operation results in a substantial decreasing of the final amount of bytes of the package with respect to the amount resulting from the addition of the images without using the method. Besides, there are no requirements on the type of images to be processed. We present results that proof the potentiality of the technique.

© 2011 OSA

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References

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2011 (4)

2010 (1)

2007 (1)

Barrera, J. F.

Batshon, H. G.

Bolognini, N.

Djordjevic, I. B.

Dong, J.

Hennelly, B. M.

Huang, D.

Javidi, B.

Kelly, D. P.

Li, X.

McDonald, J.

Mosso, F.

Naughton, T. J.

Nishchal, N. K.

N. K. Nishchal and T. J. Naughton, “Flexible optical encryption with multiple users and multiple security levels,” Opt. Commun. 284(3), 735–739 (2011).
[CrossRef]

Schmidt, T.

Sheridan, J. T.

Tebaldi, M.

Torroba, R.

Unnikrishnan, G.

Yu, Y.

Zhang, X.

Zhang, Y.

Opt. Commun. (1)

N. K. Nishchal and T. J. Naughton, “Flexible optical encryption with multiple users and multiple security levels,” Opt. Commun. 284(3), 735–739 (2011).
[CrossRef]

Opt. Express (4)

Opt. Lett. (1)

Other (4)

D. A. Huffman, “A method for the construction of minimum-redundancy codes,” Proc. IRE 40, 1098–1101 (1952).

M. Rabbani, “Selected papers on image coding and compression,” SPIE Milestone Series MS48 (SPIE Press, 1992).

J. Goodman, Introduction to Fourier Optics (McGraw-Hill, 1996).

J. C. Dainty, Laser Speckle and Related Phenomena (Springer-Verlag, 1984).

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Figures (4)

Fig. 1
Fig. 1

(a) Optical processing of a single input image: R: random phase mask, Oi: i-th input image; L: lens; f: focal length; Pi: i-th Fourier plane image; Gi: i-th sinusoidal grating. (b) Multiplexing procedure to achieve the final OSP.

Fig. 2
Fig. 2

Fourier transforming of the final OSP from Eq. (2) showing the simultaneous reconstruction of all processed images.

Fig. 3
Fig. 3

We scheme the processing for the twelve images case, where we show representative examples in the upper part and in the lower part we show an enlarged portion of the smart package to show the speckle pattern inner modulation.

Fig. 4
Fig. 4

Four recovered images out from a package containing twelve inputs showing no traces of cross talk among them.

Tables (2)

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Table 1 Image Weights for Different Formats

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Table 2 Set Weights for Different Image Formats a

Equations (2)

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P i ( u,v )=[ O i ( x,y ) ][ R( x,y ) ]
OSP( u,v )= i=1 n ( [ O i ( x,y ) ][ R( x,y ) ] ) G i ( u,v )

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