Changes between Version 34 and Version 35 of Tutorial/ImageDisplay


Ignore:
Timestamp:
Jan 23, 2015, 1:41:10 PM (6 years ago)
Author:
vaillant1p
Comment:

--

Legend:

Unmodified
Added
Removed
Modified
  • Tutorial/ImageDisplay

    v34 v35  
    99If the command '>>uvmat' is not recognized, check the [wiki:Installation].
    1010
    11 Activate the menu bar command '''[!Open/Browse...]''' at the upper left which displays a file browser, as shown in figure
     11Activate the menu bar command '''[!Open/Browse...]''' at the upper left which displays a file browser, as shown in figure.
    1212
    1313[[Image(browser.jpg)]]
    1414
    15 Move through your computer folders (use '+/..' to move upward in the tree) to select  the image file of the tutorial 'UVMAT_DEMO_FILES/EX01_pair/images/frame_1.png'. The image should appear as in figure
     15Move through your computer folders (use '+/..' to move upward in the tree) to select  the image file of the tutorial 'UVMAT_DEMO_FILES/EX01_pair/images/frame_1.png'. The image should appear as in figure.
    1616
    1717[[Image(uvmat_image.jpg)]].
    1818
    19 The file name is displayed in the upper frame '''[Input]''', split in path '.../UVMAT_DEMO_FILES/EX01_pair' (in '''[!RootPath]'''), subfolder '/images' (in '''[!SubDir]'''), root file name '/frame' (in '''[!RootFile]'''), index string '_1' (in '''[Index]''') and file extension '.png' (in '''[Ext]''').  The file index is also displayed in the left frame '''[i1]'''. You can move to the next image 'frame_2' by pressing the red arrow '''+>'''.
     19The file name is displayed in the upper frame '''[Input]''', split in path '.../UVMAT_DEMO_FILES/EX01_pair' (in '''[!RootPath]'''), subfolder '/images' (in '''[!SubDir]'''), root file name '/frame' (in '''[!RootFile]'''), index string '_1' (in '''[Index]''') and file extension '.png' (in '''[Ext]''').  The file index is also displayed in the left frame '''[i1]'''. You can move to the next image 'frame_2' by pressing the red arrow '''[+>]'''.
    2020
    2121The box '''[!NomType]''' indicates the convention for indexing, here using a separator '_'. It shows the first term in the series, which is '_1', while '''[!FileIndex]''' is incremented when we move to frame_2 or beyond.   
     
    3232== Zooming ==
    3333
    34 When '''[zoom on]''' is selected (tag='''[!CheckZoom]'''), zoom in by pressing the left side button of the mouse on the image and zoom out by pressing the right button. Use the key board directional arrows to adjust the field of view. It is also possible to manually write the coordinate limits by editing the boxes '''[MinX][MaxX]''' and '''[MinY][MaxY]''' in the frame [Coordinates]. To come back to the whole image, unselect the check box fix ('''[!CheckFixLimits]''').
     34When '''[zoom on]''' is selected (tag='''[!CheckZoom]'''), zoom in by pressing the left side button of the mouse on the image and zoom out by pressing the right button. Use the key board directional arrows to adjust the field of view. It is also possible to manually write the coordinate limits by editing the boxes '''[MinX][MaxX]''' and '''[MinY][MaxY]''' in the frame '''[Coordinates]'''. To come back to the whole image, unselect the check box fix ('''[!CheckFixLimits]''').
    3535
    3636A zoomed region can be also extracted as a separate figure by selecting '''zoom fig''' (tag '''[!CheckZoomFig]''') and drawing the contour with the mouse (keeping the left hand mouse button pressed). The zoomed region can be moved with the keyboard arrows.
    3737
    38 Selecting the check box '''fix limits'''  maintains the bounds fixed when different images of fields are opened (useful for comparisons), while the opposite option allows the bounds to adjust to the extremal coordinates of the field. Finally the x/y scaling  can be set equal by selecting the box ''''fix x/y'''' (tag name '''[!CheckFixAspectRatio]'''). Otherwise the image is deformed to fit in the plot window.
     38Selecting the check box '''[fix limits]'''  maintains the bounds fixed when different images of fields are opened (useful for comparisons), while the opposite option allows the bounds to adjust to the extremal coordinates of the field. Finally the x/y scaling  can be set equal by selecting the box '''[fix x/y]''' (tag name '''[!CheckFixAspectRatio]'''). Otherwise the image is deformed to fit in the plot window.
    3939
    4040Edit boxes in the GUI can be also zoomed by right hand mouse button selection: a new window appears with the tag name and content. This is convenient when a text box content exceeds its frame limits (for instance !RootPath).
     
    4545The current mouse coordinates in the image, as well as the local image intensity ('A'), are displayed in the upper right text window. The local image matrix  indices 'i' and 'j' are also displayed. By default the coordinates are expressed in pixel units, with origin (0,0) at the lower left of the image (the lower left pixel centre is at (0.5,0.5)). The x coordinate is equal to i-0.5 while the y coordinate is npy-(j-0.5), since the  image index j runs from top to bottom unlike the coordinate y. In case of low screen resolution, it is possible to duplicate this display in a bigger window, by right mouse button selection (after zoom has been desactivated). When the mouse is over an edit box or press button, its tag is displayed with a short explanation (tooltip). The tag and box string can be also displayed by selection with the right hand mouse button.
    4646
    47 The current image can be extracted for further processing with Matlab tools, for printing, saving, exporting ... Use the menu bar command '''[Export/in new figure]'''. It can be also exported  in the Matlab Command window as a Matlab variable (a structure), using the menu bar command '''[Export/extract field in workspace]'''. The displayed field is represented by the sub-structure Data_uvmat.Field available in the workspace: the image matrix is Data_uvmat.Field.A while the X and Y coordinates of the first and last pixels are represented by Data_uvmat.Field.AX and .AY respectively.
     47The current image can be extracted for further processing with Matlab tools, for printing, saving, exporting etc. Use the menu bar command '''[Export/in new figure]'''. It can be also exported  in the Matlab Command window as a Matlab variable (a structure), using the menu bar command '''[Export/extract field in workspace]'''. The displayed field is represented by the sub-structure Data_uvmat.Field available in the workspace: the image matrix is Data_uvmat.Field.A while the X and Y coordinates of the first and last pixels are represented by Data_uvmat.Field.AX and .AY respectively.