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arXiv 2403.04151cs.CV
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用于少样本异常检测的双路径频率判别器

Dual-path Frequency Discriminators for Few-shot Anomaly Detection

Zhejiang University(浙江大学);Polytechnic Institute, Zhejiang University(浙江大学理工学院);College of Control Science and Engineering, Zhejiang University(浙江大学控制科学与工程学院);Tencent(腾讯);China Tower (Hangzhou) Science and Technology Innovation Center(中国铁塔(杭州)科技创新中心);School of Mechanical Science and Engineering, Huazhong University of Science and Technology(华中科技大学机械科学与工程学院)

Yuhu Bai, Jiangning Zhang, Zhaofeng Chen, Yuhang Dong, Yunkang Cao, Guanzhong Tian

AI总结:

本文提出双路径频率判别器(DFD)网络,将图像转换到频率域并学习伪异常联合表示,以提升少样本异常检测性能,在MVTec AD和VisA上超越现有方法。

摘要:

少样本异常检测(FSAD)在工业制造中起着至关重要的作用。然而,现有的FSAD方法在利用有限数量的正常样本时遇到困难,经常无法在空间域中检测和定位不明显的异常。我们进一步发现,这些细微的异常在频率域中会更加明显。在本文中,我们从频率角度提出了一种双路径频率判别器(DFD)网络来解决这些问题。原始空间图像被转换为多频率图像,使其更有利于定制判别器检测异常。此外,判别器学习一种带有伪异常形式的联合表示。在MVTec AD和VisA基准上进行的广泛实验表明,我们的DFD超越了当前最先进的方法。代码可在\url{https://github.com/yuhbai/DFD}获取。

英文摘要:

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 \url{https://github.com/yuhbai/DFD}.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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