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计算机工程 ›› 2012, Vol. 38 ›› Issue (24): 123-127. doi: 10.3969/j.issn.1000-3428.2012.24.030

• 安全技术 • 上一篇    下一篇

一种基于量化表修改的F5隐写方法

鲁国鹏,叶学义,汪云路,张 艳   

  1. (杭州电子科技大学模式识别与信息安全实验室,杭州 310018)
  • 收稿日期:2012-03-06 修回日期:2012-05-04 出版日期:2012-12-20 发布日期:2012-12-18
  • 作者简介:鲁国鹏(1988-),男,硕士研究生,主研方向:信息隐藏,图像处理;叶学义,副教授、博士;汪云路,讲师、博士;张 艳,硕士研究生
  • 基金资助:
    国家自然科学青年基金资助项目(60802047, 61001216);浙江省自然科学基金资助项目(R1090138);浙江省科技计划基金资助重点项目(2008C21092)

An F5 Steganographic Method Based on Quantization Table Modification

LU Guo-peng, YE Xue-yi, WANG Yun-lu, ZHANG Yan   

  1. (Laboratory of Pattern Recognition & Information Security, Hangzhou Dianzi University, Hangzhou 310018, China)
  • Received:2012-03-06 Revised:2012-05-04 Online:2012-12-20 Published:2012-12-18

摘要: IQTM-F5方法在高嵌入比情况下,DCT系数直方图统计特性会被破坏。针对该问题,利用新的信息嵌入策略并结合IQTM-F5方法中采用的修改后量化表,提出一种保持DCT系数直方图统计特性的F5隐写方法。实验结果表明,该方法能够取得与IQTM-F5方法近似的信息隐藏容量和嵌入效率,隐秘图像具有更高的图像质量,并且抗直方图统计分析攻击的能力更强。

关键词: 隐写术, JPEG图像, 量化表修改, 高嵌入比, 嵌入策略, 离散余弦变换, DCT系数直方图统计特性

Abstract: IQTM-F5 method may destroy Discrete Cosine Transform(DCT) coefficient histogram statistic characteristic at the time of high embedding rate. Aiming at the problem, this paper proposes a new F5 steganographic method using the same modified quantization table as that in IQTM-F5, but adopts different embedding strategy to preserve the DCT coefficient histogram statistic characteristic. Experimental results show that the proposed method achieves the same steganographic capacity and embedding efficiency as IQTM-F5, and obtains better stego-image quality and stronger resistibility to histogram statistical steganalysis.

Key words: steganography, JPEG image, Quantization Table Modification(QTM), high embedding rate, embedding strategy, Discrete Cosine Transform(DCT), DCT coefficient histogram statistical characteristic

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