Changes between Version 124 and Version 125 of UvmatHelp

Dec 7, 2014, 9:50:45 PM (6 years ago)



  • UvmatHelp

    v124 v125  
    580580=== 8.2 The GUI geometry_calib.fig ===
    581582-''' Opening the GUI: ''' it is made visible  from the GUI '''uvmat.fig''' by  the menu bar command '''[!Tools/Geometric calibration] '''.  If calibration data already exist in the current file <!ImaDoc>, the corresponding parameters and the list of reference points are displayed in the table '''[!ListCoord]'''. The three first columns indicate the physical coordinates and the two last ones the corresponding image coordinates (in pixels). The physical unit is imposed as centimeter by the menu '''[!CoordUnit]''' to avoid mistakes. Calibration points can be alternatively introduced by opening any XML file <!ImaDoc> with the menu bar command '''[Import]''' of '''geometry_calib.fig'''. It is possible to import the whole information, option 'All', the calibration point coordinates only, or the calibration parameters only.
    607608-'''Section planes:''' deducing the physical coordinates from image coordinates requires information on the section plane. The default assumption is that the objects in the image are in the plane used for calibration, but uvmat can handle volume scanning by a laser plane. A set of section planes can be defined by their origin positions and rotation angle vectors. Theses planes are labelled by a ''z index'', assumed to be the frame index j (case of volume scan), or the index i modulo the number of slices !NbSlice (case of 'multilevel' scan). These settings are stored in the xml file <!ImaDoc> as part of the section <!GeometryCalib> and can be edited from '''uvmat.fig''' with the menu bar command '''[Tools/set slice]'''. A dialog box '''set_slices''' appears for entering the first and last section plane positions ''z'', as well as the number of slices and the option 'volume_scan' ('multilevel' otherwise). In the absence of 3D scan put twice the same value for first and last z. Refraction effect can be accounted for if calibration was done in air by introducing the water height (assumed at ''z''=cte). If calibration was already done in water the water height must be '''set with a value below z'''.  Finally a tilt angle of the laser sheet, around the ''x'' and ''y'' axis, can be introduced. After introduction of the plane position information, the z-index is displayed in the frame '''[FileIndices]''' of '''uvmat.fig'''. The local ''z'' position of the mouse pointer, assumed to lay on the current section plane, is then displayed in '''[text_display]'''.
    609612=== 8.3 Structure of the XML file ===
    676679Other panels can specifiy the input fields to process, the use of transform function, projection objects or masks. They are made visible only if necessary.
    678 [[Image(series.jpg)]]
    680683=== 10.2 The upper menu bar ===