Extension of PIV to Super Resolution using PTV
Extension of PIV to Super Resolution using PTV
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DOI：
10.1088/0957-0233/12/9/304
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发表时间：
2001-08
影响因子：
2.4
通讯作者：
A. Stitou;M. Riethmuller
中科院分区：
文献类型：
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作者：
A. Stitou;M. Riethmuller
本工作构成了一个集成的PIV-PTV方法的研究和发展，它结合了两种方法的优点：PIV的鲁棒性和PTV的空间分辨率。该技术是一种混合算法，首先对示踪剂的位移进行统计评估（PIV分析），然后通过跟踪单个粒子（PTV）进一步改进测量分辨率。这种方法被称为超分辨率分析。这项工作提出并批判性地讨论了这种处理的原则。强调了该方法的关键点。这项工作主要集中在粒子提取和粒子跟踪的步骤，旨在调查两相流。努力面对成像条件下，高度播种流，以提高该技术的鲁棒性。对真实的图像进行了测试和讨论。
This work constitutes the study and the development of an integrated PIV-PTV method, which combines the advantages of the two approaches: the robustness of PIV and the spatial resolution of PTV. The technique is a hybrid algorithm that starts by statistical evaluation of a tracer's displacement (PIV analysis) and further refines the resolution of measurement with the tracking of individual particles (PTV). This strategy is referred to as the super resolution analysis. This work presents and critically discusses the principles of this processing. Key points of the method are emphasized. This work focuses mainly on the particle extraction and on the particle tracking steps aiming at investigating monophasic flows. Efforts to face imaging conditions for highly seeded flows and to improve the robustness of the technique are made. Tests on real images are presented and discussed.