Posted by
Michael Schmid on
Jul 09, 2007; 3:19pm
URL: http://imagej.273.s1.nabble.com/ImageJ-interaction-ROI-Manager-etc-tp3698918p3698919.html
On 5 Jul 2007, at 09:41, Karsten Rodenacker wrote:
> Using the ROI Manger with display, the numbers in the display
> usually don't correspond with the numbers of the ROI's in the list,
> at least after having deleted any object from the list. Is that
> intended?
Hmm, the rois are not numbered in the roi manager, but have names
that relate to their y and x coordinates. The labels are the position
in the list of rois and updated correctly, as far as I see (ImageJ
1.38v; maybe you have an earlier version?)
> Using the Wand on a mask image clicking into the background will
> select the next most connected object on the right. Is that intended?
It has been like this since the early days of ImageJ and I think
everyone is used to it by now, even though it is different from the
Wand of other programs.
> Having a list of objects in the ROI manager, I would like to
> correct one selected, either cut it into two or change it and than
> update it in the ROI manager. My quite complicated way was:
> 1. Select the object
> 2. Change the mask image by drawing, deleting, etc.
> 3. Remove the selection
> 4. Multiple object select by doWand with shift if there are more
> than one object after correction
> 5. Add the object(s) to ROI Manager
> 6. Find the formerly selected object and delete it in the ROI list
> Another again complicated method is:
> 1. correct the mask image
> 2. (re)run analyze particles...
> 3. control the objects
> 4. if necessary go to 1.
> Is there any idea to improve this proceeding?
What about this:
1. select all items in ROI manager
2. ROI Manager More>>Combine (may be slow with many particles)
3. Create Mask
4. correct whatever you like (draw, delete, fill)
5. run "Analyze Particles" on the mask
6. delete everything in the ROI Manager
7. ROI Manager More>>Add Particles
1.-3. is not needed in case you have the mask of all objects already.
---
Michael