Changes between Version 23 and Version 24 of Tutorial/ParticleImageVelocimetry
- Timestamp:
- Jan 15, 2015, 5:47:44 PM (10 years ago)
Legend:
- Unmodified
- Added
- Removed
- Modified
-
Tutorial/ParticleImageVelocimetry
v23 v24 55 55 56 56 = From pixel displacement to velocity = 57 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. 58 58 59 59 The 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: