Re: Clear Outside on multiple ROIs

Posted by jumpfunky on
URL: http://imagej.273.s1.nabble.com/Clear-Outside-on-multiple-ROIs-tp5001514p5001551.html

Hi,

select all ROIs in the ROI Manager. Then use "More -> Or (Combine". Now
you can use the function Clear Outside.

Kind Regards
Thorsten
 
Am Donnerstag, den 24.01.2013, 14:55 +0100 schrieb Nilwik Rachel (BW):I
 wonder if anyone could help me with the following:

In a multi-channel image, I have created a ROI list in one channel and I
use this list to perform analyses in another channel. However, there's
much more information in this channel than I need, so I would like to
clear everything from this image except for what is within the ROIs in
the list.

>
> I have found I could use the function ClearOutside for this, however, it only works for one ROI at a time, which means that all the information of the other ROIs in the list is lost, which is of course not what I want...
>
> So, does anyone know if it is possible to perform this step, or something like it, in multiple ROIs at a time? As far as I can see it would be solved if I can activate all ROIs at a time, but I can't find how to do this. It would also be helpful if I could simply make an overlay that 'covers' everything outside the ROIs in the list, so that only the parts within the ROIs are visible (ie, without changing the image itself).
>
> Many thanks!
> Rachel
>
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