Table 4 Summary of previous studies on four-dimensional (4D) tracking of dinoflagellates using digital in-line holographic microscopy
Year | Object | Content | Reconstruction method | Axial localization algorithm | Tracking algorithm | References |
|---|---|---|---|---|---|---|
2006 | Alexandrium species | Swimming motility of Alexandrium species | Kirchhoff-Helmholtz transformation | Local extreme sharpness and intensity | Superimposing in-focus reconstructed holograms | [174] |
2007 | Karlodinium veneficum (K. veneficum) and Pfiesteria piscicida (P. piscicida) | Prey-induced change in swimming behavior of K. veneficum and P. piscicida | Fresnel transformation | Local extreme sharpness and intensity | Three-dimensional (3D) Lagrangian tracking algorithm | [98] |
2010 | K. veneficum | Swimming motility of K. veneficum and Storeatula major | Fresnel transformation | Local extreme sharpness and intensity | 3D Lagrangian tracking algorithm | [175] |
2011 | Cochlodinium polykrikoides (C. polykrikoides) and Prorocentrum minimum (P. minimum) | Swimming motility of C. polykrikoides and P. minimum | Angular spectrum method | Laplacian and Variance (VAR) focus functions | Two-frame particle tracking velocimetry (PTV) algorithm | [72] |
2011 | C. polykrikoides | Swimming motility of solitary and chain-forming C. polykrikoides | Angular spectrum method | VAR focus function | Two-frame PTV algorithm | [172] |
2013 | P. minimum | Swimming motility of P. minimum according to medium viscosity | Angular spectrum method | VAR focus function | Two-frame PTV algorithm | [176] |
2016 | P. minimum | Swimming motility of P. minimum in near-surface and bulk regions | Angular spectrum method | VAR focus function | Two-frame PTV algorithm | [173] |
2021 | P. minimum | Swimming motility of P. minimum | Angular spectrum method | Local extreme sharpness | Connecting 3D positions for each object in subsequent holograms | [177] |