کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
734084 | 893389 | 2009 | 5 صفحه PDF | دانلود رایگان |

A method used to reconstruct the image from the frequency spectrum intensity of an encrypted image is proposed in this paper. The encrypted image is obtained by utilizing the double-random phase encoding technology in the Fresnel domain on a symmetrical original image. The frequency spectrum intensity of an encrypted image is received by a CCD, and transformed to a computer. With the help of an algorithm, involving autocorrelation and complex-convolution in the discrete Fresnel transform, a reconstructed image that is the same as the original image could be obtained. Numerical simulation shows that our method is only effective for a symmetrical original image. Discussion on the influence of the deviation of pixel value in the position of symmetry has also been provided in this paper.
Journal: Optics & Laser Technology - Volume 41, Issue 4, June 2009, Pages 449–453