非抽样Contourlet变换去噪滤波器设计的源相机识别

doi:10.3724/SP.J.1087.2012.00507

计算机应用 ›› 2012, Vol. 32 ›› Issue (02): 507-513.DOI: 10.3724/SP.J.1087.2012.00507

非抽样Contourlet变换去噪滤波器设计的源相机识别

陈宗民,周治平

江南大学物联网工程学院，江苏无锡 214122

收稿日期:2011-07-13 修回日期:2011-09-15 发布日期:2012-02-23 出版日期:2012-02-01
通讯作者: 陈宗民
作者简介:陈宗民(1986-)，男，福建莆田人，硕士研究生，主要研究方向：数字图像取证；
周治平(1962-)，男，江苏无锡人，教授，博士，主要研究方向：数字图像取证、视频信号处理，模式识别。

Source camera identification based on nonsubsampled Contourlet transform denoising filter design

CHEN Zong-ming,ZHOU Zhi-ping

School of IoT Engineering, Jiangnan University, Wuxi Jiangsu 214122, China

Received:2011-07-13 Revised:2011-09-15 Online:2012-02-23 Published:2012-02-01
Contact: CHEN Zong-ming

摘要/Abstract

摘要： 针对源相机识别和小波滤波器在获取残留噪声图像时会引入明显的场景噪声的问题，提出一种利用非抽样Contourlet变换(NSCT)进行模式噪声提取的新方案。首先根据源相机识别的过程，讨论小波滤波器在提取模式噪声上的不足，接着重点讨论设计基于NSCT滤波器进行模式噪声的提取。实验表明NSCT滤波器不仅使场景噪声得到明显的抑制，而且与小波滤波器相比，对来自三种不同相机的照片的平均识别率提高了近3.667%。

关键词: 数字图像取证, 源相机识别, 模式噪声, 非抽样Contourlet变换, Neyman-Pearson准则

Abstract: Because obvious noise will occur when source camera identification and wavelet filters are getting the residual noise in the image scene, a new method for the extraction of pattern noise was proposed based on Nonsubsampled Contourlet Transform (NSCT). According to the process of source camera identification, the deficiencies of wavelet-based filter for the extraction of pattern noise were discussed first. And then, the discussion focused on the design of NSCT-based filter to extract pattern noise. The experimental results show that NSCT-based filter not only restrains the scene noise obviously, but also improves the average identification rate with 3.7% for identifying images from three different cameras compared to wavelet-based filter.

Key words: digital image forensics, source camera identification, pattern noise, Nonsubsampled Contourlet Transform (NSCT), Neyman-Pearson criterion

中图分类号:

TP301.6

陈宗民周治平. 非抽样Contourlet变换去噪滤波器设计的源相机识别[J]. 计算机应用, 2012, 32(02): 507-513.

CHEN Zong-ming ZHOU Zhi-ping. Source camera identification based on nonsubsampled Contourlet transform denoising filter design[J]. Journal of Computer Applications, 2012, 32(02): 507-513.

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非抽样Contourlet变换去噪滤波器设计的源相机识别

Source camera identification based on nonsubsampled Contourlet transform denoising filter design

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