混合蛙跳优化决策面的LSB±k隐写算法

doi:10.3969/j.issn.0255-8297.2015.06.010

应用科学学报 ›› 2015, Vol. 33 ›› Issue (6): 663-670.doi: 10.3969/j.issn.0255-8297.2015.06.010

• 多媒体信息安全专刊 • 上一篇

混合蛙跳优化决策面的LSB±k隐写算法

欧阳春娟^1,2, 刘昌鑫^1,2, 刘欢^1,2

1. 井冈山大学电子与信息工程学院, 江西吉安 343009;
2. 井冈山大学流域生态与地理环境监测国家测绘地理信息局重点实验室, 江西吉安 343009

收稿日期:2015-04-18 修回日期:2015-08-06 出版日期:2015-11-30 发布日期:2015-11-30
作者简介:欧阳春娟,副教授,博士,研究方向:信息隐藏及智能优化,E-mail:oycj001@163.com
基金资助:
国家自然科学基金(No.61462046, No.61163062);江西省教育厅科学技术研究项目基金(No.GJJ14559,No.GJJ13553);江西省科技厅自然科学项目基金(No.20151BAB207026, No.20151BAB217012)资助

Improved LSB±k Steganography Based on Decision Surface Optimized by SFLA

OUYANG Chun-juan^1,2, LIU Chang-xin^1,2, LIU Huan^1,2

1. College of Electronics and Information Engineering, Jinggangshan University, Ji'an 343009, Jiangxi Province, China;
2. Key Laboratory of Watershed Ecology and Geographical Environment Monitoring of NASG, Jinggangshan University Ji'an 343009, Jiangxi Province, China

Received:2015-04-18 Revised:2015-08-06 Online:2015-11-30 Published:2015-11-30

摘要/Abstract

摘要： 针对现有智能优化改进隐写不能对高维特征同时进行优化的问题,提出了一种混合蛙跳优化决策面的改进LSB±k隐写算法(记为SFLA-LSB±k).不同于其他优化改进隐写中尽可能减少图像载密前后某种特征变化的策略,在SFLA-LSB±k中,通过优化载密图像的特征变化,使载密图像特征变化方向随机化,导致分类器无法训练出一个能对载体与载密图像进行分类的决策面,从而达到抵抗分析的目的.实验结果表明,与标准的LSB±k隐写和相关PSO优化改进LSB±k隐写相比,SFLA-LSB±k有效提高了LSB±k的安全性,特别是当k取1时,该算法针对78维特征隐写分析的AUC值可下降到0.5637.

关键词: LSB±, k隐写, 混合蛙跳优化, 决策面, 隐写分析

Abstract: Most improved steganographies based on intelligent optimization cannot realize high-dimensional features optimization simultaneously. To solve the problem, this paper proposes an improved LSB±k steganography (denoted SFLA-LSB±k) based on SFLA to achieve an optimal decision surface. Different from the other improved steganographies that attempt to keep image features unchanged after data embedding as much as possible, the proposed method tries to randomly change feature directions of stego-image in the embedding process optimized by SFLA. Thus, it is difficult to find a decision surface to distinguish cover images from stego-images. Simulation indicates that, with the same embedding capacity, SFLA-LSB±k demonstrates better performance in resisting steganalysis than the traditional LSB±k and the improved LSB±k optimized by PSO. Especially, the AUC value is reduced to 0.5637 when k=1 against steganalysis with 78-dimension features.

Key words: LSB±, ksteganography, SFLA, decision surface, steganalysis

中图分类号:

TP911.7

欧阳春娟, 刘昌鑫, 刘欢. 混合蛙跳优化决策面的LSB±k隐写算法[J]. 应用科学学报, 2015, 33(6): 663-670.

OUYANG Chun-juan, LIU Chang-xin, LIU Huan. Improved LSB±k Steganography Based on Decision Surface Optimized by SFLA[J]. Journal of Applied Sciences, 2015, 33(6): 663-670.

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混合蛙跳优化决策面的LSB±k隐写算法

Improved LSB±k Steganography Based on Decision Surface Optimized by SFLA

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