Changes between Version 6 and Version 7 of Tutorial/ParticleImageVelocimetry


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Timestamp:
Sep 2, 2013, 10:38:04 PM (8 years ago)
Author:
sommeria
Comment:

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  • Tutorial/ParticleImageVelocimetry

    v6 v7  
    11Open again the first example of image pair in UVMAT_DEMO01_pair.(accessible on http://servforge.legi.grenoble-inp.fr/pub/soft-uvmat/).
     2
     3= Starting PIV =
    24
    35== Visual check ==
     
    1416
    1517<doc137|center>
     18
     19= Monitoring PIV results =
    1620
    1721== Visualizing  the velocity fields ==
     
    4448Similarly, the velocity vectors can be superposed to the vorticity field, selecting '''[vort] ''' in '''[Fields_1]''' instead of '''[image '''.
    4549
     50= More about PIV =
     51
    4652== PIV parameters ==
    47 Let us run again PIV with Serach x,y=(31,31). Many black vectors are obtained...
     53Let us run again PIV with Search x,y=(31,31). Many black vectors are obtained...
     54
     55== Masks ==
     56
     57== Fix and patch ==
     58
     59== Civ2 ==
     60
     61== Civ3 ==
     62
     63== From pixel displacement to velocity ==
     64 So far all pIV results have been expressed as image displacement expressed in pixels. Conversion to velocity requires geometric calibration and timing information. Calibration is described in [wiki:"Tutorial: geometric calibration" Tutorial: geometric calibration]. The result of calibration is stored in an xml file. The time interval must be then introduced in this xml file by adding a section, using a text editor.
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