【摘要】 数字信息易编辑和伪造的特点,使得数字时代多媒体的真实性遭受了极大的挑战.正因为此,关注数字图像来源辨识性、内容真实性和信息完整性的数字图像取证技术成为多媒体信息内容安全研究的热点.针对数字图像的来源取证问题,首先阐述了已有的一般模型和框架,然后从设备类型、设备型号和设备个体取证鉴别3个层次,分别阐述了目前典型的研究思路和方法,进而在此基础上,分析和介绍了当前数字图像来源取证所面临的问题和发展趋势,最终给出了结论和展望.更多还原

【Abstract】 The characteristic of editing and forging digital media makes the authenticity of multimedia encountering great challenges in digital age.Due to that,the digital image forensics,which focuses on the source identifiability,content authenticity and information integrity of digital images,has become a hot research issue in multimedia information security field.Focusing on the issue of source identification of digital images,the paper first illustrates the existing general research model and framework.Based on the overview of current typical algorithms from the perspective of device-based,model-based and camera-based source identification respectively,the problems and trends of source identification of digital images are introduced and analyzed.Finally,this paper draws the conclusion and shows the prospect of digital image source identification.更多还原