41 citations · 110 across the 6 of their papers we have counts for
4 papers · 1 filter
PRNU Based Source Camera Attribution for Image Sets Anonymized with Patch-Match Algorithm
Ahmet Karaküçük, Ahmet Emir Dirik
Patch-Match is an efficient algorithm used for structural image editing and available as a tool on popular commercial photo-editing software. The tool allows users to insert or rem…
PRNU-Based Source Device Attribution for YouTube Videos
Emmanuel Kiegaing Kouokam, Ahmet Emir Dirik
Photo Response Non-Uniformity (PRNU) is a camera imaging sensor imperfection which has earned a great interest for source device attribution of digital videos. A majority of recent…
Analysis of Rolling Shutter Effect on ENF based Video Forensics
Saffet Vatansever, Ahmet Emir Dirik, Nasir Memon
ENF is a time-varying signal of the frequency of mains electricity in a power grid. It continuously fluctuates around a nominal value (50/60 Hz) due to changes in supply and demand…
Detecting the Presence of ENF Signal in Digital Videos: a Superpixel based Approach
Saffet Vatansever, Ahmet Emir Dirik, Nasir Memon
ENF (Electrical Network Frequency) instantaneously fluctuates around its nominal value (50/60 Hz) due to a continuous disparity between generated power and consumed power. Conseque…