Extension of PIV to super resolution using PTV

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.