Changes between Version 30 and Version 31 of Tutorial/GeometricCalibration


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Timestamp:
Jan 23, 2015, 5:59:17 PM (6 years ago)
Author:
vaillant1p
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  • Tutorial/GeometricCalibration

    v30 v31  
    7272Once the grid image is correctly set, click on the '''[APPEND LIST]''' button in '''[Point Lists]'''. This will save the grid as 'img~.xml'. This document is saved in the same folder as the image. To open this document select '''[Import.../Calibration points]'''.
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    74 Now that the calibration is made for the first image we need to do it for the other ones (you can also open the different grids 'img.ref~.xml' to skip the calibration). Once a document is open, the grid is shown in '''uvmat''', to save it in the [Point Lists] click on '''[APPEND LIST]''', it will appear below the first saved document.
     74Now that the calibration is made for the first image we need to do it for the other ones (you can also open the different grids 'img.ref~.xml' to skip the calibration). Once a document is open, the grid is shown in '''uvmat''', to save it in the '''[Point Lists]''' click on '''[APPEND LIST]''', it will appear below the first saved document.
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    7676When all the grids are selected in '''[Point Lists]''', select '''[APPLY]'''. The calibration on every image is now made and the values of the intrinsic parameters are reevaluated according to the different data determined by every calibration. Note that the more images used for the calibration, the more precise the intrinsic parameters will be.
     
    7878For the next calibration, to avoid any change on the intrinsic parameters, select the option '''3D_extrinsic'''. It applies a 3D projection and quadratic correction according to the intrinsic parameters.
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    80 '''Note:''' These corrections take the hypothesis of ''z=0''. If you want to change and set the correct height of the grid, select '''[!Tools/Translate points] in '''geometry_calib''' and enter the correct value of ''z''.
     80'''Note:''' These corrections take the hypothesis of ''z=0''. If you want to change and set the correct height of the grid, select '''[!Tools/Translate points]''' in '''geometry_calib''' and enter the correct value of ''z''.
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