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arXiv 2311.03387cs.CVcs.LG
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基于卷积神经网络的广角光散射图像数据液滴尺寸测定

Determination of droplet size from wide-angle light scattering image data using convolutional neural networks

Institute of Stochastics, Ulm University(乌尔姆大学随机研究所)

Tom Kirstein, Simon Aßmann, Orkun Furat, Stefan Will, Volker Schmidt

AI总结:

针对传统WALS图像液滴尺寸测定方法效率低、易有偏差的问题,提出基于CNN的全自动测定方法,可利用迁移学习且标注需求少,在近35000张乙醇喷雾火焰WALS图像数据集上验证了其作为传统方法替代方案的潜力。

摘要:

广角光散射(WALS)技术为纳米颗粒合成的喷雾法中液滴的高时间与空间分辨率测量提供了可能。这些液滴的尺寸是影响异质团聚体等合成材料最终性能的关键变量。然而,从WALS图像数据中测定液滴尺寸的传统方法耗时费力,且可能引入偏差,尤其是应用于喷雾火焰合成(SFS)这类复杂系统时。为应对这些挑战,我们提出了一种全自动的机器学习方法,该方法采用卷积神经网络(CNNs)以简化液滴尺寸测定流程。这种基于CNN的方法还具备更多优势:所需人工标注少,且可利用迁移学习,因此在效率方面尤其有望成为传统方法的替代方案。为评估我们的机器学习模型的性能,我们采用了来自乙醇喷雾火焰过程中燃烧器表面上方不同高度(HABs)的WALS数据,模型在包含近35000张WALS图像的大型数据集上进行训练与交叉验证。

英文摘要:

Wide-angle light scattering (WALS) offers the possibility of a highly temporally and spatially resolved measurement of droplets in spray-based methods for nanoparticle synthesis. The size of these droplets is a critical variable affecting the final properties of synthesized materials such as hetero-aggregates. However, conventional methods for determining droplet sizes from WALS image data are labor-intensive and may introduce biases, particularly when applied to complex systems like spray flame synthesis (SFS). To address these challenges, we introduce a fully automatic machine learning-based approach that employs convolutional neural networks (CNNs) in order to streamline the droplet sizing process. This CNN-based methodology offers further advantages: it requires few manual labels and can utilize transfer learning, making it a promising alternative to conventional methods, specifically with respect to efficiency. To evaluate the performance of our machine learning models, we consider WALS data from an ethanol spray flame process at various heights above the burner surface (HABs), where the models are trained and cross-validated on a large dataset comprising nearly 35000 WALS images.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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