digital image blind forensics technology is aimed at identifying the authenticity of digital image without embedding digital watermarking in advance.

digital evidence and forensics

数字证据及取证

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we build a digital image blind forensics system with high efficiency.

形成了一套高效的，可变换升级的数字图像盲取证系统。

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the image forensics based on signature and technology based on watermarking are together called active forensics, which was the research focus of digital image forensics, and then the passive forensics technology emerge.

基于数字签名和基于数字水印的取证技术合称为主动取证技术，是早期数字图像取证研究的热点。

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meanwhile, we propose an efficient system to meet the current needs of the digital image forensics industry, which achieves a rapid detection for natural image with copy-paste tampering and cg image.

同时，开发实现了数字图像盲取证系统，满足了当前司法鉴定行业内对计算机生成图像和自然图象复制粘贴篡改预检的需要。

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aiming at a common copy-paste forgery in the research field of digital image forensics, this paper proposes a detection approach based on wavelet transform and singular value decomposition.

针对数字图像取证中一类常见的复制粘贴图像伪造，本文提出了一种基于小波变换和奇异值分解的检测算法。

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digital image forensics can be divided into initiative forensics and passive forensics, we describe them respectively.

其次，在总结现有的图像取证技术基础上，将数字图像取证技术分为主动取证和被动取证两类进行分别讨论。

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so the digital image forensics, especially passive image forensics, has become a particularly important and hot research field nowadays.

因此，数字图像取证技术成为当前许多领域非常重要的热点课题，尤其是被动取证技术的研究。

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the main contents and innovations are as follows: firstly, the basic framework of digital image forensics is studied.

论文的主要研究内容及创新点如下：数字图像盲取证系统框架的研究。

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digital image forensics aims to distinguish the forgeries from the authentic images.

数字图像取证技术是对图像的完整性和真实性进行鉴别。

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tamper detection has become an important component of digital image forensics and multimedia security.

篡改检测已经成为数字图像取证的重要方法。

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blind digital image forensics based on image quality measures and content corelation of image

基于图像质量参数和图像内容相关性的数字图像盲取证

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fast digital video forensics method based on object detection

一种基于目标检测的快速视频取证方法

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the framework provides a theoretical guidance for the research of this paper, and has some reference to the future work of digital forensics. secondly, a blind forensic approach for detecting copy-paste images is studied.

该框架为本文的研究提供了理论指导，对今后的盲取证工作也具有一定的借鉴意义。复制-粘贴伪造图像的盲取证方法研究。

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compressive sensing theory has been successfully applied to medical images, digital forensics, image de-noising, secure communications and other fields.

压缩感知理论已经成功的应用到医学图像，数字取证，图像去噪，保密通信等多个领域。

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in order to identify and detect digital forensics effectively, this paper puts forward a new detection method based on double-jpeg compression statistical characteristics.

为有效识别和检测数字篡改图像，提出一种新的基于双JPEG压缩统计特性的检测方法。

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the data tracing can be applied to digital forensics or other researches of zfs as an analysis tool.

本文设计的软件可以作为ZFS的分析工具，用于数字取证和其他的相关研究。

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digital forensics team is trying hard to check the home server.

数据取证组已经很努力的查验服务器了。

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detection method of digital forensics based on double-jpeg compression statistical characteristics

基于双JPEG压缩统计特性的图像篡改检测方法

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the workflow of traditional digital forensics model is improved: awareness, authorization and planning task are added.

该模型对传统数字取证模型中的分析流程进行了扩展，增加了意识、授权和计划分析过程；

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digital forensics of trusted computing environment

可信计算环境中的数字取证

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