کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7128908 1461596 2018 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Image compression-encryption algorithms by combining hyper-chaotic system with discrete fractional random transform
ترجمه فارسی عنوان
الگوریتم های رمزگذاری فشرده سازی تصاویر با ترکیب سیستم فوق العاده هرج و مرج با تبدیل تصادفی کسری گسسته
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی برق و الکترونیک
چکیده انگلیسی
Based on hyper-chaotic system and discrete fractional random transform, an image compression-encryption algorithm is designed. The original image is first transformed into a spectrum by the discrete cosine transform and the resulting spectrum is compressed according to the method of spectrum cutting. The random matrix of the discrete fractional random transform is controlled by a chaotic sequence originated from the high dimensional hyper-chaotic system. Then the compressed spectrum is encrypted by the discrete fractional random transform. The order of DFrRT and the parameters of the hyper-chaotic system are the main keys of this image compression and encryption algorithm. The proposed algorithm can compress and encrypt image signal, especially can encrypt multiple images once. To achieve the compression of multiple images, the images are transformed into spectra by the discrete cosine transform, and then the spectra are incised and spliced into a composite spectrum by Zigzag scanning. Simulation results demonstrate that the proposed image compression and encryption algorithm is of high security and good compression performance.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics & Laser Technology - Volume 103, July 2018, Pages 48-58
نویسندگان
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