arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1207.2641cs.CV
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基于共享噪声模式对数据库中的图像进行分组来识别相机

Camera identification by grouping images from database, based on shared noise patterns

Netherlands Forensic Institute(荷兰法医研究所)

Teun Baar, Wiger van Houten, Zeno Geradts

摘要:

以往的研究表明,相机特定的噪声模式,所谓的PRNU模式,从图像中提取和相关的images.In本研究的重点是从数据库中的图像分组,基于共享的噪声模式作为相机的识别方法。使用本文中描述的方法,可以从大型图像数据库中链接使用同一相机创建的图像组。使用MATLAB编程,通过使用更快的噪声提取滤波器和改进以降低计算成本,从图像中提取相关图像噪声模式比常规方法快得多。相关噪声模式(具有高于某个阈值的相关性)可以被快速地匹配。因此,从图像数据库中,可以链接相关图像的组,并且该方法可以用于扫描大量图像以寻找可疑噪声模式。

英文摘要:

Previous research showed that camera specific noise patterns, so-called PRNU-patterns, are extracted from images and related images could be found. In this particular research the focus is on grouping images from a database, based on a shared noise pattern as an identification method for cameras. Using the method as described in this article, groups of images, created using the same camera, could be linked from a large database of images. Using MATLAB programming, relevant image noise patterns are extracted from images much quicker than common methods by the use of faster noise extraction filters and improvements to reduce the calculation costs. Relating noise patterns, with a correlation above a certain threshold value, can quickly be matched. Hereby, from a database of images, groups of relating images could be linked and the method could be used to scan a large number of images for suspect noise patterns.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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