Double-image sharing encryption based on associated fractional Fourier transform and gyrator transform

• 来源期刊: 中国光学快报(英文版)
• 学科: 工学
• 关键词: 图像加密算法 分数傅里叶变换 图像共享 回转器 改造 原始图像 数值模拟实验 图像域
• 年，卷（期）: 2010,（3）
• 所属期刊栏目: Image Processing
• 页码范围: 290-292
• 页数: 3页
• 分类号: TP391.41 O438
• 语种: 英文

摘要

We present a novel method for realizing double-image encryption algorithm by combining the images in different transform domains.Two original images are encrypted into two interim images by fractional Fourier transform and gyrator transform,respectively.The two encrypted images can be obtained by means of the addition and subtraction of the two interim images.This is defined as a double-image sharing scheme,in which the original images are encrypted into two parts.The original images cannot be recovered ...