Improved anti-forensics of JPEG compression

Improved anti-forensics of JPEG compression
复制标题

改进了 JPEG 压缩的反取证

DOI:
10.1016/j.jss.2013.12.043
复制
发表时间:
2014-05
影响因子:
3.5
通讯作者:
Zhang, Xinpeng
Zhang, Xinpeng
中科院分区:
计算机科学2区
文献类型:
--
作者:
Qian, Zhenxing;Zhang, Xinpeng

文献摘要

参考文献

被引文献

相似文献

每个子带上 DCT 系数的梳状直方图和相邻块之间的块伪影是经过 JPEG 压缩的图像的两个主要指纹。 Stamm 和 Liu 提出了一种反取证方法,通过抖动 DCT 系数并向像素添加噪声来去除这些指纹。然而,经过反取证处理的图像内部出现了一些缺陷。首先,所得图像中的噪声分布异常;其次,与原始图像相比,处理后的图像质量较差。为了填补这些空白,本文提出了一种改进的 JPEG 压缩反取证方法。在分析噪声分布后,我们提出了一种去噪算法来消除图像抖动引起的颗粒噪声,并提出了一种去块算法来对抗 Fan 和 Queiroz 的针对块伪影的取证方法。通过所提出的反取证方法,去除了梳状直方图的指纹和块伪影,避免了噪声分布异常,并提高了处理图像的质量。
The comblike histogram of DCT coefficients on each subband and the blocking artifacts among adjacent blocks are the two main fingerprints of the image that was once compressed by JPEG. Stamm and Liu proposed an anti-forensics method for removing these fingerprints by dithering the DCT coefficients and adding noise into the pixels. However, some defects emerge inside the anti-forensically processed images. First, the noise distributions are abnormal in the resulting images; and second, the quality of the processed image is poor compared with the original image. To fill these gaps, this paper proposes an improved anti-forensics method for JPEG compression. After analyzing the noise distribution, we propose a denoising algorithm to remove the grainy noise caused by image dithering, and a deblocking algorithm to combat Fan and Queiroz's forensics method against blocking artifacts. With the proposed anti-forensics method, fingerprints of the comblike histograms and the blocking artifacts are removed, noise distribution abnormality is avoided, and the quality of the processed image is improved.
DOI: 10.1109/tifs.2012.2234117
发表时间: 2013-02
影响因子: 6.8
作者:
G. Valenzise;M. Tagliasacchi;S. Tubaro
通讯作者: G. Valenzise;M. Tagliasacchi;S. Tubaro
DOI: 10.1117/12.805988
发表时间: 2009-02
期刊: --
影响因子: --
作者:
Matthias Kirchner;Rainer Böhme
通讯作者: Matthias Kirchner;Rainer Böhme
DOI: 10.1016/j.jss.2007.07.036
发表时间: 2008-07-01
影响因子: 3.5
作者:
Chang, Chin-Chen;Lin, Pei-Yu
通讯作者: Lin, Pei-Yu
DOI: 10.1145/1854229.1854237
发表时间: 2010-09
影响因子: 6.2
作者:
Gang Cao;Yao Zhao;R. Ni;Huawei Tian
通讯作者: Gang Cao;Yao Zhao;R. Ni;Huawei Tian
DOI: 10.1109/tip.2002.807361
发表时间: 2003-02
期刊: IEEE transactions on image processing : a publication of the IEEE Signal Processing Society
影响因子: --
作者:
Z. Fan;R. Queiroz
通讯作者: Z. Fan;R. Queiroz