Preprint
Aug 2026
FreqAnchorAD: Language-Free Zero-Shot Anomaly Detection via Frequency-Deviation Anchoring
FreqAnchorAD is proposed, a frequency-aware framework that organizes frequency-enhanced responses for anchor-relative anomaly discrimination and achieves state-of-the-art mean performance in image-level anomaly recognition and pixel-level defect localization.
Jianfeng Qiu, Peiyuan Li, Juan Xie et al.
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