Adaptive Spatial Augmentation for Semi-supervised Semantic Segmentation

Fuente: arXiv
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Main Authors: Ran, Lingyan, Li, Yali, Zhuo, Tao, Zhang, Shizhou, Zhang, Yanning
Format: Preprint
Published: 2025
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author Ran, Lingyan
Li, Yali
Zhuo, Tao
Zhang, Shizhou
Zhang, Yanning
author_facet Ran, Lingyan
Li, Yali
Zhuo, Tao
Zhang, Shizhou
Zhang, Yanning
contents In semi-supervised semantic segmentation (SSSS), data augmentation plays a crucial role in the weak-to-strong consistency regularization framework, as it enhances diversity and improves model generalization. Recent strong augmentation methods have primarily focused on intensity-based perturbations, which have minimal impact on the semantic masks. In contrast, spatial augmentations like translation and rotation have long been acknowledged for their effectiveness in supervised semantic segmentation tasks, but they are often ignored in SSSS. In this work, we demonstrate that spatial augmentation can also contribute to model training in SSSS, despite generating inconsistent masks between the weak and strong augmentations. Furthermore, recognizing the variability among images, we propose an adaptive augmentation strategy that dynamically adjusts the augmentation for each instance based on entropy. Extensive experiments show that our proposed Adaptive Spatial Augmentation (\textbf{ASAug}) can be integrated as a pluggable module, consistently improving the performance of existing methods and achieving state-of-the-art results on benchmark datasets such as PASCAL VOC 2012, Cityscapes, and COCO.
format Preprint
id arxiv_https___arxiv_org_abs_2505_23438
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Adaptive Spatial Augmentation for Semi-supervised Semantic Segmentation
Ran, Lingyan
Li, Yali
Zhuo, Tao
Zhang, Shizhou
Zhang, Yanning
Computer Vision and Pattern Recognition
In semi-supervised semantic segmentation (SSSS), data augmentation plays a crucial role in the weak-to-strong consistency regularization framework, as it enhances diversity and improves model generalization. Recent strong augmentation methods have primarily focused on intensity-based perturbations, which have minimal impact on the semantic masks. In contrast, spatial augmentations like translation and rotation have long been acknowledged for their effectiveness in supervised semantic segmentation tasks, but they are often ignored in SSSS. In this work, we demonstrate that spatial augmentation can also contribute to model training in SSSS, despite generating inconsistent masks between the weak and strong augmentations. Furthermore, recognizing the variability among images, we propose an adaptive augmentation strategy that dynamically adjusts the augmentation for each instance based on entropy. Extensive experiments show that our proposed Adaptive Spatial Augmentation (\textbf{ASAug}) can be integrated as a pluggable module, consistently improving the performance of existing methods and achieving state-of-the-art results on benchmark datasets such as PASCAL VOC 2012, Cityscapes, and COCO.
title Adaptive Spatial Augmentation for Semi-supervised Semantic Segmentation
topic Computer Vision and Pattern Recognition
url https://arxiv.org/abs/2505.23438