Unsupervised Modular Adaptive Region Growing and RegionMix Classification for Wind Turbine Segmentation

Fuente: arXiv
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Autores principales: Pérez-Gonzalo, Raül, Magro, Riccardo, Espersen, Andreas, Agudo, Antonio
Formato: Preprint
Publicado: 2026
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author Pérez-Gonzalo, Raül
Magro, Riccardo
Espersen, Andreas
Agudo, Antonio
author_facet Pérez-Gonzalo, Raül
Magro, Riccardo
Espersen, Andreas
Agudo, Antonio
contents Reliable operation of wind turbines requires frequent inspections, as even minor surface damages can degrade aerodynamic performance, reduce energy output, and accelerate blade wear. Central to automating these inspections is the accurate segmentation of turbine blades from visual data. This task is traditionally addressed through dense, pixel-wise deep learning models. However, such methods demand extensive annotated datasets, posing scalability challenges. In this work, we introduce an annotation-efficient segmentation approach that reframes the pixel-level task into a binary region classification problem. Image regions are generated using a fully unsupervised, interpretable Modular Adaptive Region Growing technique, guided by image-specific Adaptive Thresholding and enhanced by a Region Merging process that consolidates fragmented areas into coherent segments. To improve generalization and classification robustness, we introduce RegionMix, an augmentation strategy that synthesizes new training samples by combining distinct regions. Our framework demonstrates state-of-the-art segmentation accuracy and strong cross-site generalization by consistently segmenting turbine blades across distinct windfarms.
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id arxiv_https___arxiv_org_abs_2601_04065
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Unsupervised Modular Adaptive Region Growing and RegionMix Classification for Wind Turbine Segmentation
Pérez-Gonzalo, Raül
Magro, Riccardo
Espersen, Andreas
Agudo, Antonio
Computer Vision and Pattern Recognition
Machine Learning
Reliable operation of wind turbines requires frequent inspections, as even minor surface damages can degrade aerodynamic performance, reduce energy output, and accelerate blade wear. Central to automating these inspections is the accurate segmentation of turbine blades from visual data. This task is traditionally addressed through dense, pixel-wise deep learning models. However, such methods demand extensive annotated datasets, posing scalability challenges. In this work, we introduce an annotation-efficient segmentation approach that reframes the pixel-level task into a binary region classification problem. Image regions are generated using a fully unsupervised, interpretable Modular Adaptive Region Growing technique, guided by image-specific Adaptive Thresholding and enhanced by a Region Merging process that consolidates fragmented areas into coherent segments. To improve generalization and classification robustness, we introduce RegionMix, an augmentation strategy that synthesizes new training samples by combining distinct regions. Our framework demonstrates state-of-the-art segmentation accuracy and strong cross-site generalization by consistently segmenting turbine blades across distinct windfarms.
title Unsupervised Modular Adaptive Region Growing and RegionMix Classification for Wind Turbine Segmentation
topic Computer Vision and Pattern Recognition
Machine Learning
url https://arxiv.org/abs/2601.04065