Context-Aware Weakly Supervised Image Manipulation Localization with SAM Refinement

• URL: http://arxiv.org/abs/2503.20294v2
• Date: Mon, 31 Mar 2025 04:54:08 GMT
• Title: Context-Aware Weakly Supervised Image Manipulation Localization with SAM Refinement
• Authors: Xinghao Wang, Tao Gong, Qi Chu, Bin Liu, Nenghai Yu,
• Abstract summary: Malicious image manipulation poses societal risks, increasing the importance of effective image manipulation detection methods.<n>Recent approaches in image manipulation detection have largely been driven by fully supervised approaches.<n>We present a novel weakly supervised framework based on a dual-branch Transformer-CNN architecture.
• Score: 52.15627062770557
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Malicious image manipulation poses societal risks, increasing the importance of effective image manipulation detection methods. Recent approaches in image manipulation detection have largely been driven by fully supervised approaches, which require labor-intensive pixel-level annotations. Thus, it is essential to explore weakly supervised image manipulation localization methods that only require image-level binary labels for training. However, existing weakly supervised image manipulation methods overlook the importance of edge information for accurate localization, leading to suboptimal localization performance. To address this, we propose a Context-Aware Boundary Localization (CABL) module to aggregate boundary features and learn context-inconsistency for localizing manipulated areas. Furthermore, by leveraging Class Activation Mapping (CAM) and Segment Anything Model (SAM), we introduce the CAM-Guided SAM Refinement (CGSR) module to generate more accurate manipulation localization maps. By integrating two modules, we present a novel weakly supervised framework based on a dual-branch Transformer-CNN architecture. Our method achieves outstanding localization performance across multiple datasets.

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