globalICP Constructor method for global ICP class.
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  DESCRIPTION/NOTES
  With the globalICP class the alignment of two or more point clouds can
  be refined. A prerequisite for this is an approximate alignment of the
  point clouds.
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  INPUT
  1 ['OutputFolder', OutputFolder]
    Path to directory in which output files are stored. If this option
    is omitted, the path given by the command 'cd' is used as directory.
 
  2 ['TempFolder', TempFolder]
    Folder in which temporary files are saved, e.g. imported point 
    clouds. If this option is omitted, the path given by the command
    'tempdir' is used as directory.
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  OUTPUT
  [obj]
  Object instance of class globalICP.
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  EXAMPLES
  1 Minimal working example with 6 point clouds.
    
    % Create globalICP object
    icp = globalICP('OutputFolder', 'D:\temp');
 
    % Add point clouds to object from plain text files
    % (Added point clouds are saved as mat files, e.g. LionScan1Approx.mat)
    icp.addPC('LionScan1Approx.xyz');
    icp.addPC('LionScan2Approx.xyz');
    icp.addPC('LionScan3Approx.xyz');
    icp.addPC('LionScan4Approx.xyz');
    icp.addPC('LionScan5Approx.xyz');
    icp.addPC('LionScan6Approx.xyz');
  
    % Plot all point clouds BEFORE ICP (each in a different random color)
    figure; icp.plot('Color', 'random');
    title('BEFORE ICP'); view(0,0);
  
    % Run ICP!
    icp.runICP('PlaneSearchRadius', 2);
  
    % Plot all point clouds AFTER ICP
    figure; icp.plot('Color', 'random');
    title('AFTER ICP'); view(0,0);
 
  2 Continued: Demo of the methods 'loadPC' and 'exportPC'.
 
    % Load fifth point cloud to workspace and plot
    pc = icp.loadPC(5);
    figure; pc.plot;
 
    % Export final point clouds
    icp.exportPC(1, 'LionScan1.xyz');
    icp.exportPC(2, 'LionScan2.xyz');
    icp.exportPC(3, 'LionScan3.xyz');
    icp.exportPC(4, 'LionScan4.xyz');
    icp.exportPC(5, 'LionScan5.xyz');
    icp.exportPC(6, 'LionScan6.xyz');
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  philipp.glira@gmail.com
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