A Hybrid Encryption Technique for Digital Holography using DCT and DWT

In this paper, we present a hybrid encryption for a digital hologram which is the most valuable image content. The encryption algorithm is based on a hybrid technique implementation a fourdimensional transform combining the discrete wavelet transform(DWT) and the discrete cosine transform (DCT). The encryption scheme is composed on the basis of the energy distribution. The experimental results showed that encrypting only 0.0244% of the entire data was enough to hide the constants of the hologram. The encryption algorithm expected to be used effectively on the researches on encryption and others for digital holographic display.

[1]  Seungmin Jung.  Design of Low Power Capacitive Sensing Circuit with a High Resolution in CMOS Technology , 2011, J. Inform. and Commun. Convergence Engineering.

[2]  Linfei Chen,et al.  Optical color image encryption by wavelength multiplexing and lensless Fresnel transform holograms. , 2006, Optics express.

[3]  Ji-Sang Yoo,et al.  Information hiding for digital holograms by electronic partial encryption methods , 2007 .

[4]  Thomas J. Naughton,et al.  Compression of encrypted three-dimensional objects using digital holography , 2004, SPIE OPTO-Ireland.

[5]  Ajit S. Bopardikar,et al.  Wavelet transforms - introduction to theory and applications , 1998 .

[6]  P. Hariharan,et al.  Basics of Holography , 1991 .

[7]  A. W. Lohmann,et al.  Computer-generated binary holograms , 1969 .

[8]  Hong-Won Yun,et al.  Classifying Temporal Topics with Similar Patterns on Twitter , 2011, J. Inform. and Commun. Convergence Engineering.

[9]  Xiaogang Wang,et al.  Image encryption based on extended fractional Fourier transform and digital holography technique , 2006 .

[10]  Yurong Wang,et al.  Optical image encryption based on binary Fourier transform computer-generated hologram and pixel scrambling technology , 2007 .

[11]  Yeon H. Lee,et al.  Encryption of digital hologram of 3-D object by virtual optics. , 2004, Optics express.

[12]  B. Javidi,et al.  Encrypting three-dimensional information with digital holography. , 2000, Applied optics.

[13]  Bahram Javidi,et al.  Three-Dimensional Television, Video and Display Technology , 2002 .

[14]  Dong-Wook Kim,et al.  Lossy coding technique for digital holographic signal , 2006 .