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Journal of Zhejiang University SCIENCE A 2006 Vol.7 No.8 P.1431-1435

http://doi.org/10.1631/jzus.2006.A1431


Optical encryption with cascaded fractional wavelet transforms


Author(s):  BAO Liang-hua, CHEN Lin-fei, ZHAO Dao-mu

Affiliation(s):  Department of Physics, Zhejiang University, Hangzhou 310027, China; more

Corresponding email(s):   baolh001@163.com, zhaodaomu@yahoo.com

Key Words:  Wavelet transform (WT), Cascaded fractional wavelet transform (CFWT), Encryption, Decryption


BAO Liang-hua, CHEN Lin-fei, ZHAO Dao-mu. Optical encryption with cascaded fractional wavelet transforms[J]. Journal of Zhejiang University Science A, 2006, 7(8): 1431-1435.

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author="BAO Liang-hua, CHEN Lin-fei, ZHAO Dao-mu",
journal="Journal of Zhejiang University Science A",
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pages="1431-1435",
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}

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%DOI 10.1631/jzus.2006.A1431

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T1 - Optical encryption with cascaded fractional wavelet transforms
A1 - BAO Liang-hua
A1 - CHEN Lin-fei
A1 - ZHAO Dao-mu
J0 - Journal of Zhejiang University Science A
VL - 7
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PB - Zhejiang University Press & Springer
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DOI - 10.1631/jzus.2006.A1431


Abstract: 
On the basis of fractional wavelet transform, we propose a new method called cascaded fractional wavelet transform to encrypt images. It has the virtues of fractional Fourier transform and wavelet transform. Fractional orders, standard focal lengths and scaling factors are its keys. Multistage fractional Fourier transforms can add the keys easily and strengthen information security. This method can also realize partial encryption just as wavelet transform and fractional wavelet transform. Optical realization of encryption and decryption is proposed. Computer simulations confirmed its possibility.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

Reference

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