Papers › High-Fidelity Zero-Shot Texture Anomaly Localization Using Feature Correspondence Analysis

High-Fidelity Zero-Shot Texture Anomaly Localization Using Feature Correspondence Analysis

13 Apr 2023arXiv:2304.06433archive 2025-07-28

Andrei-Timotei Ardelean, Tim Weyrich

We propose a novel method for Zero-Shot Anomaly Localization on textures. The task refers to identifying abnormal regions in an otherwise homogeneous image. To obtain a high-fidelity localization, we leverage a bijective mapping derived from the 1-dimensional Wasserstein Distance. As opposed to using holistic distances between distributions, the proposed approach allows pinpointing the non-conformity of a pixel in a local context with increased precision. By aggregating the contribution of the pixel to the errors of all nearby patches we obtain a reliable anomaly score estimate. We validate our solution on several datasets and obtain more than a 40% reduction in error over the previous state of the art on the MVTec AD dataset in a zero-shot setting. Also see https://reality.tf.fau.de/pub/ardelean2024highfidelity.html.

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Anomaly LocalizationVocal Bursts Intensity Prediction

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