AI-Generated Image Detection: An Empirical Study and Future Research Directions

• URL: http://arxiv.org/abs/2511.02791v1
• Date: Tue, 04 Nov 2025 18:13:48 GMT
• Title: AI-Generated Image Detection: An Empirical Study and Future Research Directions
• Authors: Nusrat Tasnim, Kutub Uddin, Khalid Mahmood Malik,
• Abstract summary: Threats posed by AI-generated media, particularly deepfakes, are raising significant challenges for forensics.<n>Several forensic methods have been proposed, they suffer from three critical gaps.<n>These limitations hinder fair comparison, obscure true robustness, and restrict deployment in security-critical applications.
• Score: 6.891145787446519
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: The threats posed by AI-generated media, particularly deepfakes, are now raising significant challenges for multimedia forensics, misinformation detection, and biometric system resulting in erosion of public trust in the legal system, significant increase in frauds, and social engineering attacks. Although several forensic methods have been proposed, they suffer from three critical gaps: (i) use of non-standardized benchmarks with GAN- or diffusion-generated images, (ii) inconsistent training protocols (e.g., scratch, frozen, fine-tuning), and (iii) limited evaluation metrics that fail to capture generalization and explainability. These limitations hinder fair comparison, obscure true robustness, and restrict deployment in security-critical applications. This paper introduces a unified benchmarking framework for systematic evaluation of forensic methods under controlled and reproducible conditions. We benchmark ten SoTA forensic methods (scratch, frozen, and fine-tuned) and seven publicly available datasets (GAN and diffusion) to perform extensive and systematic evaluations. We evaluate performance using multiple metrics, including accuracy, average precision, ROC-AUC, error rate, and class-wise sensitivity. We also further analyze model interpretability using confidence curves and Grad-CAM heatmaps. Our evaluations demonstrate substantial variability in generalization, with certain methods exhibiting strong in-distribution performance but degraded cross-model transferability. This study aims to guide the research community toward a deeper understanding of the strengths and limitations of current forensic approaches, and to inspire the development of more robust, generalizable, and explainable solutions.

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