Hi Gabor,
you can edit the selection by the various selection tools: shift-
click to add, alt-click to subtract. This also works with the
selection brush (hidden under the oval tool), which is handy for
small corrections.
It does not work with the line selections.
Michael
________________________________________________________________
On 17 Dec 2009, at 14:17, Gabor Csucs wrote:
> Dear List,
>
> As a newcomer, my question is perhaps a trivial one, but until now I
> couldn't find an easy/trivial solution. My problem is the
> following: from an
> image through thresholding I'm creating a mask. Now in the next
> step I would
> like to overlay this mask on my original image, but in a way that I
> can
> still edit it (the mask). After the edition of the mask I'm
> detecting/analyzing the particles there. So the basic question is,
> whether
> there is an easy way in imageJ to overlay two images in a way that
> one of
> them still remains editable?
>
> Thanks for any hint!
>
> Greeting and Thanks Gabor
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