کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1542587 1512644 2006 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Image encryption based on extended fractional Fourier transform and digital holography technique
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
Image encryption based on extended fractional Fourier transform and digital holography technique
چکیده انگلیسی

We present a new optical image encryption algorithm that is based on extended fractional Fourier transform (FRT) and digital holography technique. We can perform the encryption and decryption with more parameters compared with earlier similar methods in FRT domain. In the extended FRT encryption system, the input data to be encrypted is extended fractional Fourier transformed two times and random phase mask is placed at the output plane of the first extended FRT. By use of an interference with a wave from another random phase mask, the encrypted data is stored as a digital hologram. The data retrieval is operated by all-digital means. Computer simulations are presented to verify its validity and efficiency.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics Communications - Volume 260, Issue 2, 15 April 2006, Pages 449–453
نویسندگان
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