Changes between Version 13 and Version 14 of Tutorial/ParticleImageVelocimetry


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Timestamp:
Dec 10, 2014, 12:12:29 AM (6 years ago)
Author:
sommeria
Comment:

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  • Tutorial/ParticleImageVelocimetry

    v13 v14  
    5555
    5656= From pixel displacement to velocity =
    57  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.
     57 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/GeometricCalibration geometric calibration]. The result of calibration is stored in an xml file.
    5858
    5959The time interval between the two images, Dt=0.02 s, must be introduced in this xml file by adding a section <Camera>, using a text editor:
    6060{{{
    61 <!ImaDoc>
     61<ImaDoc>
    6262  <Camera>
    63            <!TimeUnit>s</TimeUnit>
     63           <TimeUnit>s</TimeUnit>
    6464           <BurstTiming>
    6565                   <Dti>0.02</Dti>
    66                    <!NbDti>1</NbDti>
     66                   <NbDti>1</NbDti>
    6767           </BurstTiming>
    6868  </Camera>