LogicLens: Visual-Logical Co-Reasoning for Text-Centric Forgery Analysis

• URL: http://arxiv.org/abs/2512.21482v1
• Date: Thu, 25 Dec 2025 03:02:27 GMT
• Title: LogicLens: Visual-Logical Co-Reasoning for Text-Centric Forgery Analysis
• Authors: Fanwei Zeng, Changtao Miao, Jing Huang, Zhiya Tan, Shutao Gong, Xiaoming Yu, Yang Wang, Huazhe Tan, Weibin Yao, Jianshu Li,
• Abstract summary: Text-centric forgeries pose a significant threat to societal security and information authenticity.<n>Current methods for text-centric forgery analysis are often limited to coarse-grained visual analysis.<n>We introduce LogicLens, a unified framework for Visual-Textual Co-reasoning.
• Score: 10.305807834419765
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Sophisticated text-centric forgeries, fueled by rapid AIGC advancements, pose a significant threat to societal security and information authenticity. Current methods for text-centric forgery analysis are often limited to coarse-grained visual analysis and lack the capacity for sophisticated reasoning. Moreover, they typically treat detection, grounding, and explanation as discrete sub-tasks, overlooking their intrinsic relationships for holistic performance enhancement. To address these challenges, we introduce LogicLens, a unified framework for Visual-Textual Co-reasoning that reformulates these objectives into a joint task. The deep reasoning of LogicLens is powered by our novel Cross-Cues-aware Chain of Thought (CCT) mechanism, which iteratively cross-validates visual cues against textual logic. To ensure robust alignment across all tasks, we further propose a weighted multi-task reward function for GRPO-based optimization. Complementing this framework, we first designed the PR$^2$ (Perceiver, Reasoner, Reviewer) pipeline, a hierarchical and iterative multi-agent system that generates high-quality, cognitively-aligned annotations. Then, we constructed RealText, a diverse dataset comprising 5,397 images with fine-grained annotations, including textual explanations, pixel-level segmentation, and authenticity labels for model training. Extensive experiments demonstrate the superiority of LogicLens across multiple benchmarks. In a zero-shot evaluation on T-IC13, it surpasses the specialized framework by 41.4% and GPT-4o by 23.4% in macro-average F1 score. Moreover, on the challenging dense-text T-SROIE dataset, it establishes a significant lead over other MLLM-based methods in mF1, CSS, and the macro-average F1. Our dataset, model, and code will be made publicly available.

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