Slicer3:Editor Tuning 3.6.2

Ideas for improving the Editor module:

• For 3.6.2
  • provide 'median filter'-like tool for cleaning up bad label maps (TODO: Ron is going to test existing ITK Median Filter CLI on his data).

• Done:
  • add search to the color selector box - color list dynamically filtered when typing in search box
  • pick a new default size for the color selector box (or perhaps have it remember the last size/location picked by the user) - color box remembers size selected by user
  • give the color box a 'recently used' section - most recently used colors are now added at top of list for easy access
  • rename 'check points' to 'undo/redo'
  • implement compression (to vtk stencils) for label maps in the undo/redo stack (update: vtk stencils only represent a single value so they won't work for a multi-value labelmap - looking for alternatives). Done: implemented using new vtkImageStash class that uses ZLib to compress scalar image data. Also allows for compression in background thread so it does not get in the way of interactive use.

• Still on wish list:
  • integrate the per-structure-volume functionality with the crop volume module