Three-dimensional particle tracking algorithm based on the special ellipsoids

Lin, Yunfeng; Zhang, Yang; Jin, Yuqi; Guan, Kaiyuan; Ma, Qiang; Cui, Yutong; Yang, Bin

doi:10.1016/j.measurement.2023.112883

Cited by 2 publications

(1 citation statement)

References 62 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Second, another class of methods involves matching particles based on the stability over time of the spatial patterns they create with neighboring particles. A recent example of this class of methods is introduced by Lin et al [17]. The third category is heterogeneous because it includes methods based on machine learning, and especially neural networks, trained to solve the pairing problem.…”

Section: Introductionmentioning

confidence: 99%

A robust pairing method for two-pulse particle tracking velocimetry based on coherent point drift

Mercier,

Thomas,

Tremblais

et al. 2024

Meas. Sci. Technol.

View full text Add to dashboard Cite

Particle Tracking Velocity has reached a high level of maturity in time-resolved measurements since the introduction and development of the Shake-The-Box algorithm. The eﬀectiveness of this approach lies, in part, in its ability to exploit the temporal coherence of particle trajectories to reject the ghost particles while increasing the density of true particles. However, certain situations may prevent time-resolved measurements. In those cases, a two-pulse conﬁguration is often the only option. This raises a challenge with regard to the capacity in separating the ghost from the true particles due to the lack of long-term trajectories. This article proposes a new approach to solve this problem using the coherent point drift (CPD) method. This method identiﬁes a spatially coherent deformation ﬁeld that models the transformation between two correlated sets of points. In the context of particle tracking velocimetry, the imposed spatial coherence of this calculation is believed to act in the same way as the temporal coherence that made Shake-The-Box successful. The CPD is governed by three parameters whose optimal values have been evaluated in the present contribution. These values were found to be weakly sensitive to the characteristics of the ﬂow under study, ensuring that this method is robust without further tuning of the parameters. The method is then compared with the two-pulse implementation of Shake-The-Box (2P-STB) available in Davis 10.2. For this purpose, sets of realistic images were generated at two successive times for diﬀerent conﬁgurations based of synthetically generated turbulent ﬂows. The Iterative-Particle-Reconstruction in Davis 10.2 was then used to extract the list of particles to be processed by CPD. The comparison shows a better recall with 2P-STB than CPD, especially for large time intervals between frames, but an overall better rejection of ghost particles by CPD than 2P-STB, which was the expected beneﬁt of this method.

show abstract

Section: Introductionmentioning

confidence: 99%