Optical encryption with cascaded fractional wavelet transforms

被引：2

作者：

Bao L.-H. ^{[1
,2
]}

Chen L.-F. ^{[1
]}

Zhao D.-M. ^{[1
]}

机构：

[1] Department of Physics, Zhejiang University

[2] Department of Physics, Zhejiang Education College

来源：

J Zhejiang Univ: Sci | 2006年 / 8卷 / 1431-1435期

基金：

中国国家自然科学基金;

关键词：

Cascaded fractional wavelet transform (CFWT); Decryption; Encryption; Wavelet transform (WT);

D O I：

10.1631/jzus.2006.A1431

中图分类号：

学科分类号：

摘要：

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.

引用

页码：1431 / 1435

页数：4

共 16 条

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