Houssem Hosni

Work place:

E-mail: hosny.houssem@gmail.com

Website: https://orcid.org/0000-0002-2519-9250

Research Interests:

Biography

Houssem Hosni: He obtained his PhD in automatic control, image and signal processing from the University of
La Rochelle (France) in 2022, after his degree in electrical engineering from the National Engineering School of
Monastir (Tunisia) in 2013. He has a rich and diversified experience in both academic and industrial environments,
across different activity sectors. His research work has focused on predictive maintenance, intelligent diagnostic
techniques and the use of digital twins in an Industry 4.0 context. He is currently interested in the application of
advanced artificial intelligence technologies and their practical impact on real industrial systems.

Author Articles
The Chromatic Gradient Anomaly Network (CrGAN): Exploiting Second-Order Spatiotemporal Inconsistencies for Deepfake Video Detection

By Clive Ebomagune Asuai Gabriel Ogbogbo Houssem Hosni Muhammad Ibrahim Khan

DOI: https://doi.org/10.5815/ijwmt.2026.02.10, Pub. Date: 8 Apr. 2026

Unregulated accessibility to the latest deepfake technologies presents escalating, unprecedented threats to the personal security, public trust, and democratic integrity, owing to the ever-increasing sophistication and realism of these forgeries. The biggest challenge is the inability of human verification to ascertain the original from the forgeries. Therefore, this research aims to establish an initial framework of detection and verification. The Chromatic Gradient Anomaly Network (ChrGAN) is an architecture that will be built and tested to capture changes of the various components of a video over time in order to reveal patterns of inconsistency between the spatiotemporal levels of a video and the changes of its chromatic components. One of the most important contributions of this research is the analysis of the second order derivatives (in this case, the Chromatic Gradient Fields) of the Spatiotemporal Chromatic Energy Distributions, leaving the synthesis boundary of the temporally sparse flickers and the physically implausible discontinuities of the blend exemplified by the gap. The results for the CrGAN show the highest level of diagnostic confidence, reporting a detection rate of 97.9%, and most importantly a level of pixel-wise localized mapping of the region detected that is statistically differentiated from the other detection models for a state of the art performance measurement in a machine learning model for the detection only. In conclusion, this study validates how targeting the second-order spatiotemporal inconsistencies using chromatic gradients, not only acts as an efficient detection mechanism, but also as an interpretable tool in the combat against digital deception by identifying the how and where of video forgery.

[...] Read more.
Other Articles