CT-ISG:Printer and Sensor Forensics

提案ID：0524540标题：CT-ISG：打印机和传感器取证PI：Jan P.Allebach、George T.Chiu和Edward J.Delp这项研究解决了确保由图像内容组成的数字媒体的真实性的需要。这项工作既调查了作为成像设备的固有特征的内在特征，也调查了制造商可以引入的外部特征，其中可能包括额外的用户控制信息。固有特征表示由于成像设备的光学、电气或机械限制而产生的伪影。通过调制控制设备的内在签名的参数来生成非本征签名。同样的检测内在特征的算法将形成检测和解码外部特征的基础。这项研究将导致对成像设备和由这些设备产生的伪像之间的关系的新的理解。这将为特征提取的图像分析和基于这些特征的分类器的设计带来新的知识。在计算差错控制码和非本征签名的信道容量时，它将经典通信理论的应用扩展到一个新的领域。这项工作将为执法部门和政府人员提供打击假冒、伪造和其他犯罪和恐怖活动的新工具，从而直接造福社会。

Proposal ID: 0524540Title: CT-ISG: Printer and Sensor ForensicsPIs: Jan P. Allebach, George T. Chiu, and Edward J. DelpThis research addresses the need for a means to assure the authenticity of digital media consisting of image content. The work investigates both intrinsic signatures that are an inherent characteristic of the imaging device and extrinsic signatures that can be introduced by the manufacturer with the possibility including additional user-controlled information. The intrinsic signature represents artifacts that are due to optical, electrical, or mechanical limitations of the imaging device. The extrinsic signature is generated by modulating parameters that control the intrinsic signature of the device. The same algorithms that detect the intrinsic signature will form the basis for detecting and decoding the extrinsic signature.This research will result in a new understanding of the relation between imaging devices and artifacts produced by those devices. It will lead to new knowledge regarding image analysis for feature extraction and the design of classifiers based on those features. In calculating error control codes and channel capacities for extrinsic signatures, it will extend the application of classical communications theory to a new domain. This work will be of direct benefit to society by providing law enforcement and government agents new tools for combating counterfeiting, forgery, and other criminal and terrorist activities.