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计算机工程 ›› 2012, Vol. 38 ›› Issue (16): 215-218. doi: 10.3969/j.issn.1000-3428.2012.16.056

• 图形图像处理 • 上一篇    下一篇

下采样对数字图像伪造检测的影响分析

康晓兵,张二虎,陈亚军   

  1. (西安理工大学信息科学系,西安 710048)
  • 收稿日期:2011-10-08 修回日期:2011-12-04 出版日期:2012-08-20 发布日期:2012-08-17
  • 作者简介:康晓兵(1970-),男,讲师、博士、CCF会员,主研方向:图像处理,模式识别;张二虎,教授、博士;陈亚军,讲师、博士研究生
  • 基金资助:
    国家自然科学基金资助项目(61073092);西安市科技计划基金资助项目(CXY1129-4)

Influence Analysis of Down-sampling on Digital Images Forgery Detection

KANG Xiao-bing, ZHANG Er-hu, CHEN Ya-jun   

  1. (Department of Information Science, Xi’an University of Technology, Xi’an 710048, China)
  • Received:2011-10-08 Revised:2011-12-04 Online:2012-08-20 Published:2012-08-17

摘要: 在数字图像伪造检测中,取证过程容易导致伪造痕迹丢失,造成图像内容鉴别困难。为此,研究数字图像伪造检测方法的可靠性。给出图像复制-移动伪造检测流程,分析下采样处理对图像伪造检测的影响。理论分析与实验结果表明,在一定情况下,下采样处理会移除数字图像的伪造痕迹,影响检测结果。

关键词: 复制-移动伪造, 图像取证, 下采样, 多尺度分析, 伪造痕迹

Abstract: In view of image content authentication problem caused by some forensic operations disturbing forgery traces, this paper investigates the reliability of digital image forgery detection methods. It addresses the use of down-sampling process in image forgery detection, and in-depthly analyzes the influence of sub-sampling process on image copy-move forgery detection. Theoretical analysis and experimental results demonstrate that sub-sampling operation may remove the telltale traces of image copy-move forgery and influence the detection results.

Key words: copy-move forgery, image forensics, down -sampling, multi-scale analysis, forgery trace

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