کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
735547 893625 2008 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Image encryption and decryption using fractional Fourier transform and radial Hilbert transform
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی برق و الکترونیک
پیش نمایش صفحه اول مقاله
Image encryption and decryption using fractional Fourier transform and radial Hilbert transform
چکیده انگلیسی

A technique for image encryption using fractional Fourier transform (FRT) and radial Hilbert transform (RHT) is proposed. The spatial frequency spectrum of the image to be encrypted is first segregated into two parts/channels using RHT, and image subtraction technique. Each of these channels is encrypted independently using double random phase encoding in the FRT domain. The different fractional orders and random phase masks used during the process of encryption and decryption are the keys to enhance the security of the proposed system. The algorithms to implement the proposed encryption and decryption scheme are discussed, and results of digital simulation are presented.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics and Lasers in Engineering - Volume 46, Issue 7, July 2008, Pages 522–526
نویسندگان
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