Translator Disclaimer
Paper
27 January 2010 Managing a large database of camera fingerprints
Author Affiliations +
Proceedings Volume 7541, Media Forensics and Security II; 754108 (2010) https://doi.org/10.1117/12.838378
Event: IS&T/SPIE Electronic Imaging, 2010, San Jose, California, United States
Abstract
Sensor fingerprint is a unique noise-like pattern caused by slightly varying pixel dimensions and inhomogeneity of the silicon wafer from which the sensor is made. The fingerprint can be used to prove that an image came from a specific digital camera. The presence of a camera fingerprint in an image is usually established using a detector that evaluates cross-correlation between the fingerprint and image noise. The complexity of the detector is thus proportional to the number of pixels in the image. Although computing the detector statistic for a few megapixel image takes several seconds on a single-processor PC, the processing time becomes impractically large if a sizeable database of camera fingerprints needs to be searched through. In this paper, we present a fast searching algorithm that utilizes special "fingerprint digests" and sparse data structures to address several tasks that forensic analysts will find useful when deploying camera identification from fingerprints in practice. In particular, we develop fast algorithms for finding if a given fingerprint already resides in the database and for determining whether a given image was taken by a camera whose fingerprint is in the database.
© (2010) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Miroslav Goljan, Jessica Fridrich, and Tomáš Filler "Managing a large database of camera fingerprints", Proc. SPIE 7541, Media Forensics and Security II, 754108 (27 January 2010); https://doi.org/10.1117/12.838378
PROCEEDINGS
12 PAGES


SHARE
Advertisement
Advertisement
RELATED CONTENT

Photometric analysis of the Pi of the Sky data
Proceedings of SPIE (November 07 2012)
Image counter-forensics based on feature injection
Proceedings of SPIE (February 19 2014)
Anti-forensics of chromatic aberration
Proceedings of SPIE (March 04 2015)
A color image processing pipeline for digital microscope
Proceedings of SPIE (October 15 2012)

Back to Top