Robust cross-dataset deepfake detection with multitask self-supervised learningBatagelj, Borut (Avtor) Kronovšek, Andrej (Avtor) Štruc, Vitomir (Avtor) Peer, Peter (Avtor) deepfake detectionone-class learningsegmentationlocalizationDeepfake detection is increasingly critical due to the rise of manipulated media. Existing methods often require extensive datasets and struggle with interpretability issues. To address these issues, this study introduces a novel one-class approach for detecting and localizing deepfake artifacts in videos, using authentic images to generate manipulated data for training. By integrating segmentation and leveraging convolutional neural networks with visual transformers, the method predicts both the presence and location of the generated manipulations. Experiments on seven deepfake datasets and emerging diffusion-based manipulations show that our approach consistently outperforms existing methods, demonstrating superior accuracy and localization capabilities.20252025-08-28 07:18:47Članek v reviji171520sl