Synthetic image generator for defocusing and astigmatic PIV/PTV

Massimiliano Rossi*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

This technical note introduces a synthetic image generator (SIG), referred to as MicroSIG, to be used for particle image/tracking velocimetry (PIV/PTV) analysis involving defocusing or astigmatic particle images. Target applications are experimental setups with volume illumination and small depth of field, in which the defocusing of particles plays a major role. This includes for instance PIV experiments or 3D PTV methods using defocusing or astigmatism to determine the out-of-plane particle position. The software uses an approximated model of spherical lens and conventional ray tracing to create realistic defocused/astigmatic particle images within a reasonable computational time. MicroSIG can be used to compare or optimize different PIV/PTV algorithms using arbitrary flows and different conditions including, non-monodispersed particles, non-uniform illumination, astigmatic optics, non-spherical particles (spheroids). A version of the software, available in Matlab and Python, can be found in the supplementary material and at this link: https://gitlab.com/defocustracking.
Original languageEnglish
Article number017003
JournalMeasurement Science and Technology
Volume31
Issue number1
Number of pages5
ISSN0957-0233
DOIs
Publication statusPublished - 2019

Keywords

  • Synthetic image generator
  • Particle image velocimetry
  • Particle tracking velocimetry
  • Defocusing
  • Astigmatism
  • Microscopy

Cite this

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title = "Synthetic image generator for defocusing and astigmatic PIV/PTV",
abstract = "This technical note introduces a synthetic image generator (SIG), referred to as MicroSIG, to be used for particle image/tracking velocimetry (PIV/PTV) analysis involving defocusing or astigmatic particle images. Target applications are experimental setups with volume illumination and small depth of field, in which the defocusing of particles plays a major role. This includes for instance PIV experiments or 3D PTV methods using defocusing or astigmatism to determine the out-of-plane particle position. The software uses an approximated model of spherical lens and conventional ray tracing to create realistic defocused/astigmatic particle images within a reasonable computational time. MicroSIG can be used to compare or optimize different PIV/PTV algorithms using arbitrary flows and different conditions including, non-monodispersed particles, non-uniform illumination, astigmatic optics, non-spherical particles (spheroids). A version of the software, available in Matlab and Python, can be found in the supplementary material and at this link: https://gitlab.com/defocustracking.",
keywords = "Synthetic image generator, Particle image velocimetry, Particle tracking velocimetry, Defocusing, Astigmatism, Microscopy",
author = "Massimiliano Rossi",
year = "2019",
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language = "English",
volume = "31",
journal = "Measurement Science and Technology",
issn = "0957-0233",
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Synthetic image generator for defocusing and astigmatic PIV/PTV. / Rossi, Massimiliano.

In: Measurement Science and Technology, Vol. 31, No. 1, 017003, 2019.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Synthetic image generator for defocusing and astigmatic PIV/PTV

AU - Rossi, Massimiliano

PY - 2019

Y1 - 2019

N2 - This technical note introduces a synthetic image generator (SIG), referred to as MicroSIG, to be used for particle image/tracking velocimetry (PIV/PTV) analysis involving defocusing or astigmatic particle images. Target applications are experimental setups with volume illumination and small depth of field, in which the defocusing of particles plays a major role. This includes for instance PIV experiments or 3D PTV methods using defocusing or astigmatism to determine the out-of-plane particle position. The software uses an approximated model of spherical lens and conventional ray tracing to create realistic defocused/astigmatic particle images within a reasonable computational time. MicroSIG can be used to compare or optimize different PIV/PTV algorithms using arbitrary flows and different conditions including, non-monodispersed particles, non-uniform illumination, astigmatic optics, non-spherical particles (spheroids). A version of the software, available in Matlab and Python, can be found in the supplementary material and at this link: https://gitlab.com/defocustracking.

AB - This technical note introduces a synthetic image generator (SIG), referred to as MicroSIG, to be used for particle image/tracking velocimetry (PIV/PTV) analysis involving defocusing or astigmatic particle images. Target applications are experimental setups with volume illumination and small depth of field, in which the defocusing of particles plays a major role. This includes for instance PIV experiments or 3D PTV methods using defocusing or astigmatism to determine the out-of-plane particle position. The software uses an approximated model of spherical lens and conventional ray tracing to create realistic defocused/astigmatic particle images within a reasonable computational time. MicroSIG can be used to compare or optimize different PIV/PTV algorithms using arbitrary flows and different conditions including, non-monodispersed particles, non-uniform illumination, astigmatic optics, non-spherical particles (spheroids). A version of the software, available in Matlab and Python, can be found in the supplementary material and at this link: https://gitlab.com/defocustracking.

KW - Synthetic image generator

KW - Particle image velocimetry

KW - Particle tracking velocimetry

KW - Defocusing

KW - Astigmatism

KW - Microscopy

U2 - 10.1088/1361-6501/ab42bb

DO - 10.1088/1361-6501/ab42bb

M3 - Journal article

VL - 31

JO - Measurement Science and Technology

JF - Measurement Science and Technology

SN - 0957-0233

IS - 1

M1 - 017003

ER -