arXiv:2501.04459astro-ph.IMastro-ph.EP2025-01被引 1

用实例分割自动识别土卫六云层,大幅提升分析效率。

Rapid Automated Mapping of Clouds on Titan With Instance Segmentation

  • 基于迁移学习的Mask R-CNN实现土卫六云层实例分割。
  • 可自动测量云层面积与质心,精度接近地球类研究。
  • 适合处理未来行星探测中的海量图像数据。

尽管深度学习已广泛应用于计算机视觉任务,但行星科学仍较少采用此类工具解决其独特问题。在土卫六(太阳系中气候最复杂的天体之一)上,追踪云层的季节变化和天气模式对理解其复杂气候至关重要,然而大量影像数据仍依赖传统人工分析。本文利用通过迁移学习训练的Mask R-CNN,首次在土卫六影像中实现云层的实例分割——一种此前未被探索的大数据处理方法。结果表明,自动化技术能高效生成云层面积、质心等定量指标,这些数据若由人工绘制将极为耗时。尽管面临土卫六特有的挑战,该方法精度与当前地球及其他天体的云识别研究相当。我们对比了人工与算法方法的效率,证实迁移学习带来显著加速,有望为土卫六数据探索开辟新路径。此外,此类方法在行星科学中具有广泛应用潜力,尤其适用于未来探测任务及地球遥感项目带来的海量图像数据处理。

原文摘要 · Abstract (English)

Despite widespread adoption of deep learning models to address a variety of computer vision tasks, planetary science has yet to see extensive utilization of such tools to address its unique problems. On Titan, the largest moon of Saturn, tracking seasonal trends and weather patterns of clouds provides crucial insights into one of the most complex climates in the Solar System, yet much of the available image data are still analyzed in a conventional way. In this work, we apply a Mask R-CNN trained via transfer learning to perform instance segmentation of clouds in Titan images acquired by the Cassini spacecraft - a previously unexplored approach to a big data problem in planetary science. We demonstrate that an automated technique can provide quantitative measures for clouds, such as areas and centroids, that may otherwise be prohibitively time-intensive to produce by human mapping. Furthermore, despite Titan specific challenges, our approach yields accuracy comparable to contemporary cloud identification studies on Earth and other worlds. We compare the efficiencies of human-driven versus algorithmic approaches, showing that transfer learning provides speed-ups that may open new horizons for data investigation for Titan. Moreover, we suggest that such approaches have broad potential for application to similar problems in planetary science where they are currently under-utilized. Future planned missions to the planets and remote sensing initiatives for the Earth promise to provide a deluge of image data in the coming years that will benefit strongly from leveraging machine learning approaches to perform the analysis.

云层识别实例分割行星科学迁移学习

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