Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/72302
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Type: | Journal article |
Title: | Unexpected artifacts in a digital photograph |
Author: | Sorell, M. |
Citation: | International Journal of Digital Crime and Forensics, 2009; 1(1):45-58 |
Publisher: | IGI Publishing |
Publisher Place: | United States of America |
Issue Date: | 2009 |
ISBN: | 9781609605155 |
ISSN: | 1941-6210 1941-6229 |
Statement of Responsibility: | Matthew J. Sorell |
Abstract: | This article investigates an unexpected phenomenon observed in a recent digital photograph, in which the logo of a non-sponsoring sports company appears on the jersey of a famous football player in just one of a sequence of images. After eliminating deliberate image tampering as a cause, a hypothetical sequence of circumstances is proposed, concerning the lighting, dominant colours, infrared sensitivity, optical preprocessing, image enhancement and JPEG compression. The hypotheses are tested using a digital SLR camera. The investigation is of interest in a forensic context, firstly as a possible explanation in case such a photograph is observed, and secondly to be able to confirm or refute claims of such artifacts put forward claiming that a hypothetical image is not really what it claims to be. |
Rights: | Copyright © 2011 by IGI Global |
DOI: | 10.4018/jdcf.2009010103 |
Appears in Collections: | Aurora harvest 5 Electrical and Electronic Engineering publications |
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