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DeltaDeno enables zero-shot anomaly generation without prior training

Researchers have developed DeltaDeno, a novel zero-shot method for generating anomalies in images without requiring any prior training or anomaly samples. This technique localizes and edits defects by comparing two diffusion processes guided by minimal prompt pairs. The method accumulates per-step denoising differences to create a localization map, which then guides the generation of realistic local defects while preserving surrounding context. DeltaDeno also refines prompts at the token level to enhance anomaly tokens and applies spatial attention biases, demonstrating improved generation quality and downstream anomaly detection performance. AI

IMPACT Enables realistic anomaly generation for tasks like defect detection without requiring specific training data.

RANK_REASON The cluster describes a new research paper detailing a novel method for image anomaly generation. [lever_c_demoted from research: ic=1 ai=1.0]

Read on arXiv cs.CV →

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DeltaDeno enables zero-shot anomaly generation without prior training

COVERAGE [1]

  1. arXiv cs.CV TIER_1 English(EN) · Chaoran Xu, Chengkan Lv, Qiyu Chen, Yunkang Cao, Feng Zhang, Zhengtao Zhang ·

    DeltaDeno: Zero-Shot Anomaly Generation via Delta-Denoising Attribution

    arXiv:2511.16920v2 Announce Type: replace Abstract: Anomaly generation is often framed as few-shot fine-tuning with anomalous samples, which contradicts the scarcity that motivates generation and tends to overfit category priors. We tackle the setting where no real anomaly sample…