[Insight-users] Color Viewer Question

[Luis Ibanez]

Hi Zein,

The color viewer utility uses internally the
class:

       GLColorSliceView

which derives from

       GLSliceView

This class accepts an additional input image to
be used as an overlay. You can associate a colormap
with the overlay. The GLSliceView offers the functionality
of setting the transparency of the overlay so you can
have your masks in a particular transparent color.

You can see an example of this working in the demo
application : FastMarchingLevelSet.  In the directory

   Insight/Applications/FastMarchingLevelSet

A Viewer with overlay is associated with the "overlay"
button at the top right of the GUI.



Please let us know if you have futher questions.


Thanks


Luis


-------------------------------------------

salah wrote:

> Hello all,
> 
> I display  volumes (3D images) using fltk viewer or the color viewer example provided with the ITK toolkit. I need to highlight some (already known) regions/pixels in the image with a different transparent color (red for example), some other pixel with another color, .... Till now, I do this by first creating an RGB image by simply coloring the original image, i.e, I supply the viewer with the newly created colored image. This method is in fact poor since when I need to highlight the required pixels some how lighter or darker, I need to recreat the RGB image and invoke the viewer once again. Is there a more efficient method to do that?? something similar to the SetOverlay method of the viewers?? something that masks selected pixels?? any other ideas?? 
> 
> Many thanks for any suggestion!!!
> 
> Zein
> 
> 
> 
> 
> 
> ->8<------------->8<------------->8<------------->8<------------->8<------------->8<-
> Zein I. Salah 
> Universität Tübingen, WSI-GRIS, Sand 14, 72076 Tübingen 
> Email: salah@gris.uni-tuebingen.de  / zeinsalah@hotmail.com
> Tel.: (07071) 29 75465 (GRIS) , (07071) 25 69 43 (privat) 
> Fax: (07071) 29 54 66
> 
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