MSPP-Net: Fine-Grained Image Privacy Identification via Multi-stage Semantic Perception
摘要
The rise of online social networks has heightened concerns over image privacy leakage. Although deep learning methods have been applied to privacy recognition, they face two key challenges: (1) a privacy gap between low-level visual features and high-level, context-aware human judgments, and (2) limited consideration of inter-entity context. To address these, we propose MSPP-Net, a Multi-Stage Privacy Perception Network inspired by human cognition. It decomposes privacy inference into three stages: entity perception to detect key objects, attribute perception to align visual features with semantic concepts via multimodal contrastive learning, and privacy perception to model inter-object context using graph attention networks. Experiments on our FineViP dataset show that MSPP-Net outperforms strong baselines, improving mAP by 3% and OR by 1.1%, validating the benefits of structured, cognitively motivated modeling for privacy recognition.