
Proceedings Paper
Color image encryption based on fractional Fourier transforms and pixel scrambling techniqueFormat | Member Price | Non-Member Price |
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Paper Abstract
Color image encryption based on fractional Fourier transform (FRT) and pixel scrambling technique is presented in this
paper. In general, color (RGB) image cannot be directly encrypted using a traditional setup for optical information
processing, because which is only adapted to process two-dimensional gray image. In the proposed method, a
three-dimensional RGB image is decomposed to three two-dimensional gray images (R, G and B values of the color
image), and the encryption operation will be done on each two-dimensional gray image, then the encoded color image is
available by composing the three two-dimensional encrypted images. The decryption process is an inverse of the
encryption. The optical encrypting systems based on the presented method is proposed and simulated. Some results of
computer simulation are presented to verify the flexibility and the reliability of this method. The quality of decrypted
images would be debased with the difference of the fractional order. The frustrated decryption of monochromic image
will affect the color of decrypted image. At the end of this paper, an all-optical and photoelectric encryption/decryption
systems solution are presented, and the principle of selecting optical devices are also given.
Paper Details
Date Published: 11 January 2007
PDF: 7 pages
Proc. SPIE 6279, 27th International Congress on High-Speed Photography and Photonics, 62793B (11 January 2007); doi: 10.1117/12.725349
Published in SPIE Proceedings Vol. 6279:
27th International Congress on High-Speed Photography and Photonics
Xun Hou; Wei Zhao; Baoli Yao, Editor(s)
PDF: 7 pages
Proc. SPIE 6279, 27th International Congress on High-Speed Photography and Photonics, 62793B (11 January 2007); doi: 10.1117/12.725349
Show Author Affiliations
Jianlin Zhao, Northwestern Polytechnical Univ. (China)
Hongqiang Lu, Northwestern Polytechnical Univ. (China)
Hongqiang Lu, Northwestern Polytechnical Univ. (China)
Qi Fan, Northwestern Polytechnical Univ. (China)
Published in SPIE Proceedings Vol. 6279:
27th International Congress on High-Speed Photography and Photonics
Xun Hou; Wei Zhao; Baoli Yao, Editor(s)
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