SortScrews: A Dataset and Baseline for Real-time Screw Classification

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Hauptverfasser: Fu, Tianhao, Yang, Bingxuan, Guo, Juncheng, Sribalan, Shrena, Chen, Yucheng
Format: Preprint
Veröffentlicht: 2026
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author Fu, Tianhao
Yang, Bingxuan
Guo, Juncheng
Sribalan, Shrena
Chen, Yucheng
author_facet Fu, Tianhao
Yang, Bingxuan
Guo, Juncheng
Sribalan, Shrena
Chen, Yucheng
contents Automatic identification of screw types is important for industrial automation, robotics, and inventory management. However, publicly available datasets for screw classification are scarce, particularly for controlled single-object scenarios commonly encountered in automated sorting systems. In this work, we introduce $\textbf{SortScrews}$, a dataset for casewise visual classification of screws. The dataset contains 560 RGB images at $512\times512$ resolution covering six screw types and a background class. Images are captured using a standardized acquisition setup and include mild variations in lighting and camera perspective across four capture settings. To facilitate reproducible research and dataset expansion, we also provide a reusable data collection script that allows users to easily construct similar datasets for custom hardware components using inexpensive camera setups. We establish baseline results using transfer learning with EfficientNet-B0 and ResNet-18 classifiers pretrained on ImageNet. In addition, we conduct a well-explored failure analysis. Despite the limited dataset size, these lightweight models achieve strong classification accuracy, demonstrating that controlled acquisition conditions enable effective learning even with relatively small datasets. The dataset, collection pipeline, and baseline training code are publicly available at https://github.com/ATATC/SortScrews.
format Preprint
id arxiv_https___arxiv_org_abs_2603_13027
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle SortScrews: A Dataset and Baseline for Real-time Screw Classification
Fu, Tianhao
Yang, Bingxuan
Guo, Juncheng
Sribalan, Shrena
Chen, Yucheng
Computer Vision and Pattern Recognition
Artificial Intelligence
Machine Learning
Automatic identification of screw types is important for industrial automation, robotics, and inventory management. However, publicly available datasets for screw classification are scarce, particularly for controlled single-object scenarios commonly encountered in automated sorting systems. In this work, we introduce $\textbf{SortScrews}$, a dataset for casewise visual classification of screws. The dataset contains 560 RGB images at $512\times512$ resolution covering six screw types and a background class. Images are captured using a standardized acquisition setup and include mild variations in lighting and camera perspective across four capture settings. To facilitate reproducible research and dataset expansion, we also provide a reusable data collection script that allows users to easily construct similar datasets for custom hardware components using inexpensive camera setups. We establish baseline results using transfer learning with EfficientNet-B0 and ResNet-18 classifiers pretrained on ImageNet. In addition, we conduct a well-explored failure analysis. Despite the limited dataset size, these lightweight models achieve strong classification accuracy, demonstrating that controlled acquisition conditions enable effective learning even with relatively small datasets. The dataset, collection pipeline, and baseline training code are publicly available at https://github.com/ATATC/SortScrews.
title SortScrews: A Dataset and Baseline for Real-time Screw Classification
topic Computer Vision and Pattern Recognition
Artificial Intelligence
Machine Learning
url https://arxiv.org/abs/2603.13027