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Semantic Discrepancy-aware Detector for Image Forgery Identification
Created by
Haebom
Author
Ziye Wang, Minghang Yu, Chunyan Xu, Zhen Cui
Outline
This paper focuses on forgery detection using semantic concepts from pre-trained models, as the importance of image forgery detection has increased due to advancements in image generation technology. To address the mismatch between forged images and semantic concept spaces, we propose a novel semantic mismatch detector (SDD) consisting of three main modules. First, the semantic token sampling module mitigates spatial shifts caused by forgery marks and features unrelated to semantic concepts. Second, the concept-level forgery mismatch learning module, based on a visual reconstruction paradigm, enhances the interaction between visual semantic concepts and forgery marks, effectively capturing mismatches guided by concepts. Third, the low-level forgery feature enhancer integrates learned concept-level forgery mismatches to minimize redundant forgery information. Experimental results on two standard image forgery datasets demonstrate that the proposed SDD outperforms existing methods. The source code is available at https://github.com/wzy1111111/SSD .