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SLSG: Industrial Image Anomaly Detection by Learning Better Feature Embeddings and One-Class Classification

30 Apr 2023arXiv:2305.00398archive 2025-07-28

Minghui Yang, Jing Liu, Zhiwei Yang, Zhaoyang Wu

Industrial image anomaly detection under the setting of one-class classification has significant practical value. However, most existing models struggle to extract separable feature representations when performing feature embedding and struggle to build compact descriptions of normal features when performing one-class classification. One direct consequence of this is that most models perform poorly in detecting logical anomalies which violate contextual relationships. Focusing on more effective and comprehensive anomaly detection, we propose a network based on self-supervised learning and self-attentive graph convolution (SLSG) for anomaly detection. SLSG uses a generative pre-training network to assist the encoder in learning the embedding of normal patterns and the reasoning of position relationships. Subsequently, SLSG introduces the pseudo-prior knowledge of anomaly through simulated abnormal samples. By comparing the simulated anomalies, SLSG can better summarize the normal features and narrow down the hypersphere used for one-class classification. In addition, with the construction of a more general graph structure, SLSG comprehensively models the dense and sparse relationships among elements in the image, which further strengthens the detection of logical anomalies. Extensive experiments on benchmark datasets show that SLSG achieves superior anomaly detection performance, demonstrating the effectiveness of our method.

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Tasks

Anomaly DetectionClassificationOne-Class ClassificationSelf-Supervised Learning

Results from the paper archive 2025-07-28

TaskDatasetModelMetricValueRank at snapshotLeaderboardReport
Anomaly Detection MVTec LOCO AD SLSG Avg. Detection AUROC 90.3 #8 of 40 Archive leaderboard report
Anomaly Detection MVTec LOCO AD SLSG Detection AUROC (only logical) 89.6 #8 of 40 Archive leaderboard report
Anomaly Detection MVTec LOCO AD SLSG Detection AUROC (only structural) 91.4 #8 of 40 Archive leaderboard report
Anomaly Detection MVTec LOCO AD SLSG Segmentation AU-sPRO (until FPR 5%) 67.3 #8 of 40 Archive leaderboard report

Ranks are positions in the archive's leaderboards as they stood at the 2025-07-28 snapshot. Results published since then are not among these rows, so a rank here is not a current standing.

Methods

Convolution

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