With diverse presentation forgery methods emerging continually, detecting the authenticity of images has drawn growing attention. Although existing methods have achieved impressive accuracy in training dataset detection, they still perform poorly in the unseen domain and suffer from forgery of irrelevant information such as background and identity, affecting generalizability. To solve this problem, we proposed a novel framework Selective Domain-Invariant Feature (SDIF), which reduces the sensitivity to face forgery by fusing content features and styles. Specifically, we first use a Farthest-Point Sampling (FPS) training strategy to construct a task-relevant style sample representation space for fusing with content features. Then, we propose a dynamic feature extraction module to generate features with diverse styles to improve the performance and effectiveness of the feature extractor. Finally, a domain separation strategy is used to retain domain-related features to help distinguish between real and fake faces. Both qualitative and quantitative results in existing benchmarks and proposals demonstrate the effectiveness of our approach.

提出了一种名为Selective Domain-Invariant Feature (SDIF)的新型框架，通过融合内容特征和样式来减少对面部伪造的敏感性，并使用动态特征提取模块生成具有多样样式的特征，最终使用领域分离策略来帮助区分真实和伪造的面部。在现有基准和提案中的定性和定量结果证明了我们方法的有效性。

选择性域不变特征用于可推广的深假识别