Changes between Version 71 and Version 72 of UvmatHelp


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Timestamp:
Jun 27, 2013, 12:47:41 AM (7 years ago)
Author:
sommeria
Comment:

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  • UvmatHelp

    v71 v72  
    4545Type '>>uvmat' in the Matlab prompt to display the GUI. If the function is unknown by Matlab, add the appropriate path (see the Matlab command '>>help path'). When the GUI is opening, the date of last modfication is displayed in the central window. During opening, the program checks the Matlab path to all the functions of the package (using the function ''check_functions.m''). If a function is missing, or if it is overridden by a function with the same name at another path location, a message is  displayed in the central window at the opening of the  GUI '''uvmat.fig'''. Finally, if the svn server is accessible by line-command, the latest version number of the uvmat package is indicated.
    4646
     47The GUI contains an upper menu bar, a central graphic display window, a lower left window for histogram, a top right text display window, columns of edit boxes and command buttons on both side.
     48
     49Each of the graphic elements (''uicontrols'') is described by a ''tag name'', which can be displayed by moving the mouse over it: a tool tip window appears with the tag name followed by a short help description. The element tag and content can be also displayed in a zoom window, and possibly edited there, by a right hand mouse selection on the element. As a rule, tag names for checkboxes begins by 'Check', while tags of elements with numerical content begins by ''num_''.
     50
     51The red pushbuttons command the main actions. The color of pushbuttons or other elements turns to yellow while their ''callback function'' is active.
     52
    4753[[Image(help_1.jpg)]]
    48 
    49 The GUI contains an upper menu bar, a central graphic display window, a lower left window for histogram, a top right text display window, columns of edit boxes and command buttons on both side.
    50 
    51 Each of the graphic elements (''uicontrols'') is described by a ''tag name'', which can be displayed by moving the mouse over it: a tool tip window appears with the tag name followed by a short help description. The element tag and content can be also displayed in a zoom window, and possibly edited there, by a right hand mouse selection on the element. As a rule, tag names for checkboxes begins by 'Check', while tags of elements with numerical content begins by ''num_''.
    52 
    53 The red pushbuttons command the main actions. The color of pushbuttons or other elements turns to yellow while their ''callback function'' is active.
    5454
    5555=== 2.2 The upper menu bar ===
     
    226226
    227227The greyscale images are described by a matrix A(npy,npx) of integers, whose range depends on the camera dynamics (0 to 255 for 8 bit images, 0 to 65535 for 16 bit images). They are represented with gray levels, according to the colorbar displayed on the right. The luminosity and contrast can be adjusted using the edit boxes '''[num_MinA]''' and '''[num_MaxA]''' on the right of the interface: the luminosity level set by '''[num_MinA]''' (and levels below) is represented as black, and the luminosity level set by '''[num_MaxA]''' (or levels above) as white. When the check box '''[!CheckFixScalar]''' is not selected, these bounds are set automatically to the image minimum and maximum respectively. Then the image may appear dark if a single point is very bright, in that case a lower value must be set by '''[num_MaxA]'''. Greyscale images can be displayed with false colors, from blue to red, by unselecting the check box '''[CheckBW]'''.
     228
     229Note that greyscale images with low resolution are linearly interpolated on a finer mesh for nicer display. This interpolation can be also done as image processing by defining a grid on a projection object 'plane', see [#ProjObject section 6].
    228230
    229231Two images can be visually compared by switching back and forth between them as a short movie. This is quite useful to get a visual feeling of the image correlation for PIV. This effect is obtained by introducing two image indices in the edit boxes j1 and j2 (or i1 and i2), and selecting the button  '''[movie_pair] ''' (''''[<-->]'''') to switch between these two indices. The speed of the movie can be adjusted by the slider '''[speed]'''. Press '''[movie_pair] ''' again, or '''[STOP]''', to stop the motion.