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NCJ Number: 228231 Find in a Library
Title: Digital Camera Identification: A Brief Test of a Method Based on the Sensor Noise
Journal: Journal of Forensic Identification  Volume:59  Issue:5  Dated:September/October 2009  Pages:475-501
Author(s): Tobias Hoglund
Date Published: October 2009
Page Count: 27
Type: Report (Study/Research)
Format: Article
Language: English
Country: United States of America
Annotation: This paper evaluated a statistical model based on sensor noise in the identification of digital cameras.
Abstract: The result of the evaluation on digital camera identification was shown to be promising for both charge-coupled device (CCD) and complementary metal-oxide-semiconductor (CMOS) cameras with relatively low noise levels. Uncompressed images and scaled images provided good results; however, the more compression that was applied to the images, the more the results degraded. Removing the row and column noise from the reference noise improved the result. Future tests are recommended involving more cameras of different models, quality, and types. In the forensic field, there is the possibility of being able to identify the camera that shot a specific image. It is claimed that the noise pattern is useful when determining whether a specific camera took a particular image. A statistical model was made by extracting the noise pattern associated with a camera and then comparing it to images from the same and other cameras. This paper evaluated this method based on the unique sensor noise in digital cameras. Figures, table, and references
Main Term(s): Evidence identification
Index Term(s): Camera technology; Forensic sciences; Photographic analyses; Photographic identification; Photography
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