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La forge institutionnelle d'INRAE étant en production depuis le 10 juin 2025, nous vous invitons à y créer vos nouveaux projets.

  • Image Velocimetry
  • Fudaa Lspiv
  • Wiki
  • User manual
  • Post processing of velocity results

Post processing of velocity results · Changes

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Update Post processing of velocity results authored Nov 12, 2024 by Guillaume  Bodart's avatar Guillaume Bodart
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User-manual/Post-processing-of-velocity-results.md
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......@@ -2,15 +2,15 @@
[**7. Post-processing of calculated velocities**](#post-processing-of-calculated-velocities)
- [Filtering Instantaneous Results](#wastebasket-filtering-instantaneous-results)
- [Filtering instantaneous results](#wastebasket-filtering-instantaneous-results)
- [1. Median Test](#1-median-test)
- [2. Velocity Threshold](#2-velocity-threshold)
- [3. Correlation Threshold](#3-correlation-threshold)
- [4. Correlation Peak](#4-correlation-peak)
- [5. Velocity Distribution](#5-velocity-distribution)
- [6. Angular Dispersion](#6-angular-dispersion)
- [Mean Results](#bar_chart-moyenne-des-r%C3%A9sultats)
- [Statistics of Velocity Results](#chart_with_upwards_trend-statistiques-des-r%C3%A9sultats-de-vitesse)
- [Mean results](#bar_chart-moyenne-des-r%C3%A9sultats)
- [Statistics of velocity results](#chart_with_upwards_trend-statistiques-des-r%C3%A9sultats-de-vitesse)
#
......@@ -224,7 +224,7 @@ The filtered instantaneous velocity fields are stored in the **_vel_filter_** fo
It allows visualizing the calculated velocities for image pairs in the form of a vector field (**_Velocities F_**), streamlines (**_Particles F._**, see how to calculate it here ([see how to calculate here](#\_Calcul_des_lignes)) or iso-contour plots (**_Isosurfaces F_**).
More details on [visualization and configuration of velocity layers here](#r%C3%A9f%C3%A9rences-bibliographiques). The graphical interface allows linking the visualization of images and calculated velocities with the button "Link/unlink images and velocities". ![image69](uploads/c52b2ceac811695dc42f0b958550b6e8/image69.png).
# :bar_chart: Average of Results
# :bar_chart: Average of results
The **_Post-processing🡪 Average of filtered instantaneous results_** menu opens the interface for calculating the average/median.
......@@ -241,7 +241,7 @@ The averaged velocity field is stored in the file **_outputs.dir/average_vel.out
It allows visualizing the averaged velocities calculated as a vector field (**_Velocities M._**), streamlines (**_Particles M_**, see how to calculate it here [see how to calculate here](#\_Calcul_des_lignes)) or iso-contour plots (**_Isosurfaces M_**). More details on [visualization and configuration of velocity layers here](Manuel-utilisateur/Affichage-des-résultats-de-vitesse). The graphical interface allows linking the visualization of images and calculated velocities with the button "Link/unlink images and velocities". ![image69](uploads/c52b2ceac811695dc42f0b958550b6e8/image69.png)
# :chart_with_upwards_trend: Statistics of Velocity Results
# :chart_with_upwards_trend: Statistics of velocity results
The **_Post-processing🡪 Show result statistics..._** menu displays a summary (min, max, mean, median, standard deviation) of the raw and filtered velocity results: Vx and Vy components, correlation level (CORREL), norm (NORME), rotational (OMEGA, not yet implemented: displays value 4), divergence (DIVERG, not yet implemented: displays value 5). The statistics can be calculated for the results of all image pairs or for a specific image pair.
......
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Manuel utilisateur (français)

  1. Généralités
  2. Démarrer avec Fudaa-LSPIV
  3. Commencer une étude Fudaa-LSPIV
  4. Gestion des images sources
  5. Orthorectification des images
  6. Calcul de la vitesse de déplacement des traceurs
  7. Post traitement des vitesses calculées
  8. Affichage des résultats de vitesse
  9. Calcul du débit
  10. Export des données
  11. Relancer les calculs d'une étude existante
  12. Bug connus et parades
  13. Approfondissements
  14. Références bibliographiques

User manual (English)

  1. General information
  2. Getting started with Fudaa-LSPIV
  3. Starting a Fudaa-LSPIV study
  4. Managing source images
  5. Image orthorectification
  6. Tracers velocity computation
  7. Post-processing of velocity results
  8. Display-velocity-results
  9. Discharge computation
  10. Data export
  11. Relaunch existing study computations
  12. Known bugs and workarounds
  13. Advanced
  14. References