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The Effect of Light Source on ENF Based Video Forensics

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Citation Author(s):
Saffet Vatansever
Saffet Vatansever, Ahmet Emir Dirik, Nasir Memon
Submitted by:
Saffet Vatansever
Last updated:
15 May 2019 - 8:17am
Document Type:
Poster
Document Year:
2019
Event:
ICASSP 2019
Presenters:
Saffet Vatansever
Paper Code:
IFS-P1.3
Categories:
Multimedia Forensics
 

ENF (Electric Network Frequency) oscillates around a nominal value (50/60 Hz) due to imbalance between consumed and generated power. The intensity of a light source powered by mains electricity varies depending on the ENF fluctuations. These fluctuations can be extracted from videos recorded in the presence of mains-powered source illumination. This work investigates how the quality of the ENF signal estimated from video is affected by different light source illumination, compression ratios, and by social media encoding. Also explored is the effect of the length of the ENF ground truth database on time of recording detection and verification.

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