Forensic use of photo response non-uniformity of imaging sensors and a counter method
Forensic use of photo response non-uniformity of imaging sensors and a counter method
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DOI：
10.1364/oe.22.000470
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发表时间：
2014-01-13
期刊：
影响因子：
3.8
通讯作者：
Karakucuk, Ahmet
中科院分区：
文献类型：
--
作者：
Dirik, Ahmet Emir;Karakucuk, Ahmet
类似于在法医学中使用子弹划痕，数字图像的真实性可以通过成像传感器的噪声特性来验证。特别是，光响应非均匀噪声(PRNU)已被用于源相机识别(SCI)。然而，这种技术可以被恶意使用来跟踪或指认无辜的人。为了阻碍这种跟踪，应显著抑制PRNU噪声。基于这一动机，我们提出了一种欺骗SCI的反取证方法。实验结果表明，该算法在保持图像质量的前提下，有可能阻碍基于PRNU的摄像机识别。(C)2014年美国光学学会
Analogous to use of bullet scratches in forensic science, the authenticity of a digital image can be verified through the noise characteristics of an imaging sensor. In particular, photo-response non-uniformity noise (PRNU) has been used in source camera identification (SCI). However, this technique can be used maliciously to track or inculpate innocent people. To impede such tracking, PRNU noise should be suppressed significantly. Based on this motivation, we propose a counter forensic method to deceive SCI. Experimental results show that it is possible to impede PRNU-based camera identification for various imaging sensors while preserving the image quality. (C)2014 Optical Society of America