Changes between Version 23 and Version 24 of Tutorial/GeometricCalibration


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Timestamp:
Jan 16, 2015, 4:03:34 PM (6 years ago)
Author:
vaillant1p
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  • Tutorial/GeometricCalibration

    v23 v24  
    4141The more general method of calibration consists in using a set of reference points whose physical coordinates are known. Open with '''uvmat''' an image in 'UVMAT_DEMO06_PIVconvection/Dalsa1' (accessible on http://servforge.legi.grenoble-inp.fr/pub/soft-uvmat/)
    4242
    43 Select in the menu bar '''Tools/geometric calibration'''. Mark the four box corners of the box with the mouse (left hand button). Their coordinates in pixels are displayed in the two last column of the table '''!ListCoord''' in the GUI '''geometry_calib'''. To clear the table for corrections push the button '''CLEAR_PTS''', or for a single line, use the key board backward arrow. To improve the position on the image, use the zoom and directional arrows. We find the coordinates of the four calibration points in pixels:
     43Select in the menu bar '''Tools/geometric calibration'''. Mark the four box corners of the box with the mouse (left hand button). Their coordinates in pixels are displayed in the two last column of the table '''!ListCoord''' in the GUI '''geometry_calib'''. To clear the table for corrections push the button '''CLEAR_PTS''', or for a single line, use the key board 'Delete' button. To improve the position on the image, use the zoom and directional arrows. We find the coordinates of the four calibration points in pixels:
    4444
    4545(X,Y)=(80.3, 81.6), (982.3, 86.1), (978.9, 937.4), (71.2, 929.5).