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arXiv · 2610.21780

DINO-FIL: Multi-Layer Transformer Fusion for Generative Inpainting Forgery Localization

Simon Freitter·David Fischinger·Silvia Poletti·Marcel Hasenbalg·Martin Boyer
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Abstract

We propose DINO-FIL, a transformer-based framework for pixel-level localization of generative image forgeries. The method leverages multi-layer representations from a pretrained DINOv3 ViT-H+/16 encoder combined with a lightweight fusion decoder to capture both semantic structure and fine-grained texture inconsistencies introduced by image editing. By aggregating intermediate transformer features across depths, the model improves sensitivity to subtle, spatially localized artifacts that are often missed by standard single-layer approaches. We evaluate DINO-FIL in a cross-dataset setting, training on B-Free and testing on Beyond the Brush, CocoGlide, TGIF, and SAGI-D. The model achieves strong generalization, outperforming existing baselines on average and on four of five evaluated datasets, while maintaining a high true negative rate on pristine images.

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Simon Freitter, David Fischinger, Silvia Poletti, Marcel Hasenbalg, Martin Boyer. 2026-10-15. DINO-FIL: Multi-Layer Transformer Fusion for Generative Inpainting Forgery Localization. https://arxiv.org/abs/2610.21780

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