A repo of helper functions and setup tips for PIV experiments.

Disclaimer: This is intendet for internal use only at the Tsue-Nakaya Laboratory at the University of Tokyo!

Table of Contents

1. Current TODOs
2. Installation
3. Contribution
4. References

TODOs:

• Add tools for creating a laser sheet from Cavilux HF pulse laser

Installation

Using python3-venv

python3 -m venv venv
source venv/bin/activate
pip install -r requirements.txt
pip install -e . # to install in interactive mode

Later, you just need to type source venv/bin/activate in the termial to activate the environment.

Contribution

If you wish to contribute, install pre-commit first, via the following

pre-commit install

Then, before committing to the repository, run

pre-commit run -a

every time to ensure correct formatting.

References

[1] Schmidt, B. E., & Sutton, J. A. (2020). Improvements in the accuracy of wavelet-based optical flow velocimetry (wOFV) using an efficient and physically based implementation of velocity regularization. Experiments in Fluids, 61, 1-17.

[2] Schmidt, B. E., & Sutton, J. A. (2019). High-resolution velocimetry from tracer particle fields using a wavelet-based optical flow method. Experiments in Fluids, 60(3), 37.

[3] Kadri-Harouna, S., Dérian, P., Héas, P., & Mémin, E. (2013). Divergence-free wavelets and high order regularization. International journal of computer vision, 103(1), 80-99.

[4] Wu, Y. T., Kanade, T., Li, C. C., & Cohn, J. (2000). Image registration using wavelet-based motion model. International Journal of Computer Vision, 38, 129-152.

[5] Dérian, P., Héas, P., Herzet, C., & Mémin, É. (2012). Wavelet-based fluid motion estimation. In Scale Space and Variational Methods in Computer Vision: Third International Conference, SSVM 2011, Ein-Gedi, Israel, May 29–June 2, 2011, Revised Selected Papers 3 (pp. 737-748). Springer Berlin Heidelberg.

[6] Chen, M., Zhao, Z., Wang, X., Wang, Z., Li, F., Zhu, J., ... & Zhou, B. (2024). Wavelet optical flow velocimetry of a scramjet combustor using high-speed frame-straddling focusing schlieren images. Combustion and Flame, 269, 113705.

[7] Carlier, J., & Wieneke, B. (2005). Report 1 on production and diffusion of fluid mechanics images and data. Fluid project deliverable 1.2. http://www.fluid.irisa.fr, 6.