arXiv:2608.16380cs.CVcs.AI2026-08

用生成模型合成战场农田影像,提升稀缺数据下的损毁识别准确率。

Synthetic Data Augmentation for Satellite-Based Analysis of Battle-Damaged Agricultural Fields in Ukraine

论文配图:Synthetic Data Augmentation for Satellite-Based Analysis of Battle-Damaged Agricultural Fields in Ukraine
图 1 · 摘自论文原文
  • 用条件GAN和扩散模型生成轰炸与未轰炸农田的合成卫星图
  • 使用平衡的扩散模型增强数据后,分类准确率提升至88%
  • 适合数据稀缺的战区地理分析与灾后评估研究者

监测乌克兰战争对农业用地的破坏对理解粮食安全、环境稳定及战后恢复至关重要。然而,计算机视觉系统在卫星图像损伤分析方面的应用受限于标注影像稀缺,尤其是受损农田数据。本文研究了合成数据增强在有限且不平衡训练数据下的分类性能提升效果。我们基于真实卫星图像训练条件生成对抗网络(GAN)和去噪扩散概率模型(DDPM),生成额外的轰炸与未轰炸农田样本,仅用于训练增广,所有下游评估均在纯真实测试集上进行。通过多种真实与合成数据配置训练视觉变换器分类器,结果表明,采用平衡的DDPM增广方案,准确率从84%提升至88%,平衡准确率从67%升至81%,宏F1从65%增至78%,未受代表类别的召回率从41%提高到69%。这些结果证明了合成卫星影像在战区地理空间应用中的潜力。

原文摘要 · Abstract (English)

Monitoring war-induced damage to agricultural land in Ukraine is important for understanding threats to food security, environmental stability, and post-war recovery. However, the development of computer-vision systems for satellite-based damage analysis is limited by the scarcity of labeled imagery, especially for damaged agricultural fields. This work investigates synthetic data augmentation as a method for improving classification under limited and imbalanced training data. We train class-conditional Generative Adversarial Network (GAN) and Denoising Diffusion Probabilistic Model (DDPM) architectures on real satellite images and use them to generate additional bombed and not-bombed agricultural-field samples. The generated images are used only for training augmentation, while all downstream evaluation is performed on an exclusively real test set. A Vision Transformer classifier is trained under multiple real and synthetic data configurations to measure the practical utility of each generative approach. The best configuration, based on balanced DDPM augmentation, improves accuracy from 84\% to 88\%, balanced accuracy from 67\% to 81\%, macro F1 from 65\% to 78\%, and recall for the underrepresented not-bombed class from 41\% to 69\%. These results demonstrate the potential of synthetic satellite imagery for data-scarce geospatial applications in war-affected regions.

卫星影像合成数据生成模型战区监测

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