Title :
The Algorithm of Fractional Fourier Transform and Application in Digital Image Encryption
Author :
Zhang, Yuhong ; Zhao, Fenxia
Author_Institution :
Coll. of Sci., Tianjin Univ. of Commerce, Tianjin, China
Abstract :
Encryption of digital image processing becomes more and more important for Internet data transportation, and many methods can be applied for the processing. In this paper we first introduce how to use matrix algorithm to calculate discrete fractional Fourier transform (DFrFT). And then the fractional Fourier transform (FrFT) is applied to an image encryption and decryption. The matrix algorithm of fractional Fourier transform is implemented in MatLab® 2007.
Keywords :
cryptography; discrete Fourier transforms; image coding; matrix algebra; Internet data transportation; MatLab 2007; digital image encryption; discrete fractional Fourier transform; image decryption; matrix algorithm; Business; Cryptography; Digital images; Educational institutions; Fourier transforms; Frequency; Optical modulation; Optical signal processing; Signal processing; Signal processing algorithms;
Conference_Titel :
Information Engineering and Computer Science, 2009. ICIECS 2009. International Conference on
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-4994-1
DOI :
10.1109/ICIECS.2009.5365644
