Using Sensor Dirt for Toolmark Analysis of Digital Photographs
Olivier
2008
Citation information
M. S. Olivier. “Using Sensor Dirt for Toolmark Analysis of
Digital Photographs”. In: Advances in Digital Forensics IV. Ed. by I. Ray and
S. Shenoi. Springer, 2008, pp. 193–206 
Abstract
Dust particles sometimes collect on the image sensors of Digital Single Lens Reflex cameras (DSLRs). Such particles often leave marks on the pictures taken with such a camera. The question therefore arises whether such marks may be used for forensic identification of the camera used to take the picture. The paper considers this question by investigating the impact of various camera and lens factors, such as focal length and recording format used.
It is suggested that a grid overlay is used for matching.
Based on this initial work, the paper also quantifies the probability that a false positive match will occur. This clearly demonstrates that the technique holds potential.
Full text
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Definitive version
The definitive version of the paper is available from the
publisher.DOI: 10.1007/978-0-387-84927-0_16
BibTeX reference
@inproceedings(dirt,author={Martin S Olivier},
title={Using Sensor Dirt for Toolmark Analysis of Digital Photographs},
booktitle={Advances in Digital Forensics IV},
editor={Indrajit Ray and Sujeet Shenoi},
year={2008},
publisher={Springer},
pages={193--206} )