2012 Fiscal Year Final Research Report

Development of a video tampering detection method based on the individual characteristics of imaging devices

Research Project

Project/Area Number	22700116
Research Category	Grant-in-Aid for Young Scientists (B)
Allocation Type	Single-year Grants
Research Field	Media informatics/Database
Research Institution	National Research Institute of Police Science
Principal Investigator	KUROSAWA Kenji 科学警察研究所, 法科学第二部, 室長 (80356170)
Project Period (FY)	2010 – 2012
Keywords	法科学 / 画像解析 / 改ざん検出 / 撮像素子
Research Abstract	A video tampering detection method has been developed. In this study, individual characteristics due to variations in the electrical characteristics of each pixel in a semiconductor imaging device was analyzed for tampering detection. Spatial and temporal position of tampering as well as the presence of tampering could be specified with the method. Image content tampering and scene insertion could be detected with the proposed method under the condition of the recording camera was available. Furthermore, a method which is capable of detecting scene insertion has been developed in the case of unknown camera was used for imaging