Automated Counting of Stacked Objects in Industrial Inspection

Fuente: arXiv
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Hauptverfasser: Dumery, Corentin, Etté, Noa, Fan, Aoxiang, Li, Ren, Xu, Jingyi, Le, Hieu, Fua, Pascal
Format: Preprint
Veröffentlicht: 2026
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author Dumery, Corentin
Etté, Noa
Fan, Aoxiang
Li, Ren
Xu, Jingyi
Le, Hieu
Fua, Pascal
author_facet Dumery, Corentin
Etté, Noa
Fan, Aoxiang
Li, Ren
Xu, Jingyi
Le, Hieu
Fua, Pascal
contents Visual object counting is a fundamental computer vision task in industrial inspection, where accurate, high-throughput inventory tracking and quality assurance are critical. Moreover, manufactured parts are often too light to reliably deduce their count from their weight, or too heavy to move the stack on a scale safely and practically, making automated visual counting the more robust solution in many scenarios. However, existing methods struggle with stacked 3D items in containers, pallets, or bins, where most objects are heavily occluded and only a few are directly visible. To address this important yet underexplored challenge, we propose a novel 3D counting approach that decomposes the task into two complementary subproblems: estimating the 3D geometry of the stack and its occupancy ratio from multi-view images. By combining geometric reconstruction with deep learning-based depth analysis, our method can accurately count identical manufactured parts inside containers, even when they are irregularly stacked and partially hidden. We validate our 3D counting pipeline on large-scale synthetic and diverse real-world data with manually verified total counts, demonstrating robust performance under realistic inspection conditions.
format Preprint
id arxiv_https___arxiv_org_abs_2603_15470
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Automated Counting of Stacked Objects in Industrial Inspection
Dumery, Corentin
Etté, Noa
Fan, Aoxiang
Li, Ren
Xu, Jingyi
Le, Hieu
Fua, Pascal
Computer Vision and Pattern Recognition
Visual object counting is a fundamental computer vision task in industrial inspection, where accurate, high-throughput inventory tracking and quality assurance are critical. Moreover, manufactured parts are often too light to reliably deduce their count from their weight, or too heavy to move the stack on a scale safely and practically, making automated visual counting the more robust solution in many scenarios. However, existing methods struggle with stacked 3D items in containers, pallets, or bins, where most objects are heavily occluded and only a few are directly visible. To address this important yet underexplored challenge, we propose a novel 3D counting approach that decomposes the task into two complementary subproblems: estimating the 3D geometry of the stack and its occupancy ratio from multi-view images. By combining geometric reconstruction with deep learning-based depth analysis, our method can accurately count identical manufactured parts inside containers, even when they are irregularly stacked and partially hidden. We validate our 3D counting pipeline on large-scale synthetic and diverse real-world data with manually verified total counts, demonstrating robust performance under realistic inspection conditions.
title Automated Counting of Stacked Objects in Industrial Inspection
topic Computer Vision and Pattern Recognition
url https://arxiv.org/abs/2603.15470