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基于相干疊加與模均等矢量分解的光學(xué)圖像加密算法

張博 龍慧 江沸菠

張博, 龍慧, 江沸菠. 基于相干疊加與模均等矢量分解的光學(xué)圖像加密算法[J]. 電子與信息學(xué)報, 2018, 40(2): 438-446. doi: 10.11999/JEIT170489
引用本文: 張博, 龍慧, 江沸菠. 基于相干疊加與模均等矢量分解的光學(xué)圖像加密算法[J]. 電子與信息學(xué)報, 2018, 40(2): 438-446. doi: 10.11999/JEIT170489
ZHANG Bo, LONG Hui, JIANG Feibo. Optical Image Encryption Algorithm Based on Coherent Superposition and Equal Modulus Vector Decomposition[J]. Journal of Electronics & Information Technology, 2018, 40(2): 438-446. doi: 10.11999/JEIT170489
Citation: ZHANG Bo, LONG Hui, JIANG Feibo. Optical Image Encryption Algorithm Based on Coherent Superposition and Equal Modulus Vector Decomposition[J]. Journal of Electronics & Information Technology, 2018, 40(2): 438-446. doi: 10.11999/JEIT170489

基于相干疊加與模均等矢量分解的光學(xué)圖像加密算法

doi: 10.11999/JEIT170489
基金項目: 

國家自然科學(xué)基金(41604117),湖南省科技計劃資助項目(2015JC3067)

Optical Image Encryption Algorithm Based on Coherent Superposition and Equal Modulus Vector Decomposition

Funds: 

The National Natural Science Foundation of China (41604117), The Hunan Science and Technology Plan (2015JC3067)

  • 摘要: 為了解決光學(xué)圖像加密技術(shù)將密文相位信息主要集中在純相位掩碼中,使其存在輪廓顯現(xiàn)問題,該文提出相干疊加與模均等矢量分解的光學(xué)圖像加密算法。首先,對輸入圖像進(jìn)行歸一化處理;基于映射,利用輸入圖像的像素特性,生成其初值,通過迭代映射,輸出混沌相位掩碼;借助相位掩碼,對圖像完成調(diào)制,并結(jié)合Fourier變換,對調(diào)制圖像進(jìn)行處理,輸出其Fourier頻譜;再對該頻譜分別進(jìn)行等模分解,獲得兩個掩碼;再基于不同分?jǐn)?shù)階的Fourier機(jī)制,對兩個掩碼進(jìn)行變換;最后,引入相位-幅度截斷編碼技術(shù),設(shè)計單向編碼機(jī)制,通過激光束的相干疊加,輸出編碼密文的幅度與相位信息,將相位部分視為編碼密文,把幅度信息作為解密密鑰。通過等模分解技術(shù),將輸入明文演變?yōu)?個不同的相位與幅度信息,有效解決了輪廓顯現(xiàn)問題。實驗結(jié)果顯示:與當(dāng)前基于干涉原理的圖像加密機(jī)制相比,所提算法的安全性更高,有效消除了輪廓顯現(xiàn)問題。
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出版歷程
  • 收稿日期:  2017-05-22
  • 修回日期:  2017-09-29
  • 刊出日期:  2018-02-19

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