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Message-ID:  <000e01c20000$ca3583e0$b6010b98@MOBILENICK>
Date:         Mon, 20 May 2002 09:16:34 -0400
Reply-To:     ImageJ Interest Group <[log in to unmask]>
Sender:       ImageJ Interest Group <[log in to unmask]>
From:         Nick Linnenbrügger <[log in to unmask]>
Subject:      Accessing ROIs from ROI Manager

Dear Wayne,

I would like to access ROIs stored in the ROI Manager from within a plugin.
I've had a look at the code and it doesn't seem to be possible since the
member variable 'rois' has friendly access. It would be useful, if such a
possibility could be added to the 'RoiManager' class, e.g. by adding a
getROIs() method. Then, one could use the ROI Manager similarly to the
Window Manager. Also, it would be helpful if one could access the 'list'
variable in order to be able to determine which ROIs are currently selected
in the ROI Manager.

This would introduce the ability to process an image based on several ROIs,
e.g., analyzing a region enclosed by two concentric circles/ellipses (ring
shape). Then, it would be very useful to have a function (e.g. in class
'ROI') that returns whether a point (x,y) lies within a particular ROI or
not (maybe
this is already available?). Also, it would be great if one could calculate
masks (ROIs) that represent logic AND, OR, and XOR combinations of two ROIs
(although this is probably a little more complicated). What do you think?

Have you ever thought about allowing for rotated oval ROIs, i.e., oval ROIs
with their principal axis not being parallel to the image borders?

With kindest regards,

Nick.

--
| Nick Linnenbrügger
|
| Until June 25:
|    Department of Medical Engineering
|    Wake Forest University School of Medicine
|    Medical Center Boulevard
|    Winston-Salem, NC 27157-1093
|    Phone: +1 336 716-2582
|
| E-Mail: [log in to unmask] or [log in to unmask]
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