Changes between Version 15 and Version 16 of Tutorial/ProjectionObjects


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Timestamp:
May 4, 2014, 9:00:12 AM (7 years ago)
Author:
sommeria
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  • Tutorial/ProjectionObjects

    v15 v16  
    1414
    1515== Getting the image histogram in a sub-region ==
    16 This is obtained by creating a contour object, a polygon, a rectangle or an ellipse, using '''Projection object/polygon''', '''Projection object/rectangle''' or '''Projection object/ellipse'''. Draw the contour with the mouse to plot the histogram of the image inside the contour.  To get the histogram of the region outside the contour, select thecheck box  '''[edit'''] in the frame '''Objects''' of '''uvmat'''. Then in the GUI '''set_object''', select 'outside' in the menu '''[!ProjMode'''] and press the button '''[REFRESH'''].
     16This is obtained by creating a contour object, a polygon, a rectangle or an ellipse, using '''Projection object/polygon''', '''Projection object/rectangle''' or '''Projection object/ellipse'''. Draw the contour with the mouse to plot the histogram of the image inside the contour.  To get the histogram of the region outside the contour, select thecheck box  '''[edit'''] in the frame '''Objects''' of '''uvmat'''. Then in the GUI '''set_object''', select 'outside' in the menu '''[!ProjMode'''] and press the button '''[REFRESH'''].
    1717
    1818== Resampling the image ==
    19 The image can be resampled by linear interpolation of image luminosity on a grid, by selecting '''Projection object/plane'''. Then on the GUI '''set_object''', select 'interp_lin' in the menu '''[!ProjMode]'''. Set the mesh in x and y by the edit boxes '''num_DX''' and '''num_DY''', for instance with values 10, and press '''REFRESH'''. The image interpolated on this coarse grid is then displayed. It is also possible to reduce the range of x and y by the edit boxes ['''num_RangeX_1'''] and '''_2''' and '''[num_RangeY_1]''' and '''_2'''. Finally it is also possible to rotate the projection grid by setting the angle (in degrees) in the edit box '''[num_Angle_3'''].
     19The image can be resampled by linear interpolation of image luminosity on a grid, by selecting '''Projection object/plane'''. Then on the GUI '''set_object''', select 'interp_lin' in the menu '''[!ProjMode]'''. Set the mesh in x and y by the edit boxes '''[num_DX]''' and ['''num_DY'''], for instance with values 10, and press '''REFRESH'''. The image interpolated on this coarse grid is then displayed. It is also possible to reduce the range of x and y by the edit boxes ['''num_RangeX_1'''] and '''_2''' and '''[num_RangeY_1]''' and '''_2'''. Finally it is also possible to rotate the projection grid by setting the angle (in degrees) in the edit box '''[num_Angle_3'''].