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Autoencoder-Based Visual Anomaly Localization for Manufacturing Quality Control

  • Manufacturing industries require the efficient and voluminous production of high-quality finished goods. In the context of Industry 4.0, visual anomaly detection poses an optimistic solution for automatically controlled product quality with high precision. In general, automation based on computer vision is a promising solution to prevent bottlenecks at the product quality checkpoint. We considered recent advancements in machine learning to improve visual defect localization, but challenges persist in obtaining a balanced feature set and database of the wide variety of defects occurring in the production line. Hence, this paper proposes a defect localizing autoencoder with unsupervised class selection by clustering with k-means the features extracted from a pretrained VGG16 network. Moreover, the selected classes of defects are augmented with natural wild textures to simulate artificial defects. The study demonstrates the effectiveness of the defect localizing autoencoder with unsupervised class selection for improving defect detection in manufacturing industries. The proposed methodology shows promising results with precise and accurate localization of quality defects on melamine-faced boards for the furniture industry. Incorporating artificial defects into the training data shows significant potential for practical implementation in real-world quality control scenarios.

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Metadaten
Author:Devang Mehta, Noah Klarmann
DOI:https://doi.org/10.3390/make6010001
Parent Title (English):Machine Learning and Knowledge Extraction
Document Type:Article (peer reviewed)
Language:English
Publication Year:2024
Tag:anomaly detection; artifical defect simulation; autoencoder; computer vision; defect detection; unsupervised clustering; visual product quality control
Volume:6
Issue:1
Page Number:17
First Page:1
Last Page:17
Peer reviewed:Ja
faculties / departments:Fakultät für Wirtschaftsingenieurwesen
Licence (German):License LogoCreative Commons - CC BY - Namensnennung 4.0 International