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Unsupervised anomaly detection in the textile texture database

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Abstract

Anomaly detection in textile images poses significant challenges due to the scarcity of defective samples and the complex nature of textile textures. This study presents a novel image processing workflow that enhances the unsupervised Variational Autoencoder’s (VAE) ability to identify anomalies in textile images, addressing the limitation of insufficient defective samples in real-world manufacturing scenarios. The primary motivation behind this research is to develop a robust anomaly detection method that can be trained using only normal samples, overcoming the common imbalance between normal and defective samples in the textile industry. Our proposed method introduces domain-specific techniques to preprocess images, assess the adequacy of training samples, and employ intuitive visual methods to differentiate between normal and abnormal samples. A key strength of our approach lies in strategically crop** original images into smaller blocks, increasing training samples and computational efficiency. However, this crop** step introduces abrupt boundary issues that can hinder accurate anomaly detection. To mitigate this problem, we developed a refined image processing approach that effectively resolves boundary artifacts, enabling precise localization of abnormal regions. We trained, tested, and validated our VAE model using the TILDA textile texture database. The experimental results highlight the robustness of our method, achieving high identification rates of 74% for normal samples and 76.9% for abnormal samples, even when trained solely on normal samples. The insights gained from this study have significant implications for the textile industry, paving the way for more efficient and reliable quality control processes.

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Data availability

No datasets were generated or analysed during the current study.

Abbreviations

CNN:

Convolutional Neural Network

GPU:

Graphics Processing Units

Faster R-CNN:

Faster Region with Convolution Neural Network

YOLOV2:

You Only Look Once V2

YOLOV3:

You Only Look Once V3

YOLOV4:

You Only Look Once V4

GAN:

Generative Adversarial Networks

FCSDA:

Fisher Criterion-based Stacked Denoising Autoencoders

MS-FCAE:

Multiscale Feature-clustering-based Fully Convolutional Autoencoder

DAE:

Denoising AutoEncoder

SAE:

Sparse AutoEncoder

CVAE:

Contractive AutoEncoder

VAE:

Variational Autoencoder

TILDA:

Textile Texture-Database

VAE:

Variational Autoencoder

AE:

Autoencoder

ELBO:

Evidence Lower Bound

t-SNE:

t-Distributed Stochastic Neighbor Embedding

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Acknowledgements

The author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: This work was funded in part by the National Science and Technology Council, Taiwan, ROC under Grants NSTC 109-2221-E-167 -010 and NSTC 110-2221-E-167 -017.

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Authors

Contributions

Bo-Lin Jian was the primary manuscript writer and was responsible for designing the initial structure of the article. Wen-Lin Chu contributed to revising the article structure and provided the conceptual ideas for the Variational Autoencoder (VAE) implementation. Qun-Wei Chang assisted in organizing the manuscript and supported the experimental data collection process.

Corresponding author

Correspondence to Bo-Lin Jian.

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The authors declare no competing interests.

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The Author declare that there is no conflict of interest.

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Chu, WL., Chang, QW. & Jian, BL. Unsupervised anomaly detection in the textile texture database. Microsyst Technol (2024). https://doi.org/10.1007/s00542-024-05711-1

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  • DOI: https://doi.org/10.1007/s00542-024-05711-1

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