Dual-path Frequency Discriminators for Few-shot Anomaly Detection
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Abstract (arXiv)
Few-shot anomaly detection (FSAD) plays a crucial role in industrial manufacturing. However, existing FSAD methods encounter difficulties leveraging a limited number of normal samples, frequently failing to detect and locate inconspicuous anomalies in the spatial domain. We have further discovered that these subtle anomalies would be more noticeable in the frequency domain. In this paper, we propose a Dual-Path Frequency Discriminators (DFD) network from a frequency perspective to tackle these issues. The original spatial images are transformed into multi-frequency images, making them more conducive to the tailored discriminators in detecting anomalies. Additionally, the discriminators learn a joint representation with forms of pseudo-anomalies. Extensive experiments conducted on MVTec AD and VisA benchmarks demonstrate that our DFD surpasses current state-of-the-art methods. The code is available at urlhttps://github.com/yuhbai/DFD.
Key facts. Cited by 7 papers in the map (data through 7 Oct 2026). Builds on 44 of its 67 references that are in the map. First posted on arXiv 7 Mar 2024.
Builds on
44 of 67 references.
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32 more
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Built on by
Citing papers per year: 2025: 4; 2026: 3.
7 papers.
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- 2025Toward Long-Tailed Online Anomaly Detection through Class-Agnostic Conceptscited by 1
- 2025Bridge Feature Matching and Cross-Modal Alignment with Mutual-filtering for Zero-shot Anomaly Detectioncited by 0
- 2026A Feature Shuffling and Restoration Strategy for Universal Unsupervised Anomaly Detectioncited by 0
- 2026SGANet: Semantic and Geometric Alignment for Multimodal Multi-view Anomaly Detectioncited by 0
- 2026CFR-Net:Collaborative Feature Refinement Network for Medical Image Anomaly Detectioncited by 0
- 2026CFR-Net:Collaborative Feature Refinement Network for Medical Image Anomaly Detection13 Jul 2026
- 2026SGANet: Semantic and Geometric Alignment for Multimodal Multi-view Anomaly Detection7 Apr 2026
- 2026A Feature Shuffling and Restoration Strategy for Universal Unsupervised Anomaly Detection24 Mar 2026
- 2025Toward Long-Tailed Online Anomaly Detection through Class-Agnostic Concepts22 Jul 2025
- 2025A Comprehensive Survey for Real-World Industrial Defect Detection: Challenges, Approaches, and Prospects15 Jul 2025
- 2025Bridge Feature Matching and Cross-Modal Alignment with Mutual-filtering for Zero-shot Anomaly Detection15 Jul 2025
- 2025A Survey on Foundation-Model-Based Industrial Defect Detection26 Feb 2025