Re: Macro to define a local region of interest

Posted by Douglas Benn-2 on Jun 02, 2011; 5:34am
URL: http://imagej.273.s1.nabble.com/Macro-to-define-a-local-region-of-interest-tp3684393p3684396.html

Dear Michael,

I found out how to do it.

Best wishes.

Douglas

Dr Douglas K Benn, BDS,DDS, M.Phil., Ph.D., Dipl. Dental Radiology (Royal College of Radiologists, England).
Professor and Director of Oral & Maxillofacial Radiology
Dept of General Dentistry
Creighton University Dental School
2802 Webster St, Boyne 210
Omaha
Nebraska 68178

Tel: [phone]
Fax: [phone]



-----Original Message-----
From: ImageJ Interest Group on behalf of Benn, Douglas K.
Sent: Wed 6/1/2011 8:53 PM
To: [hidden email]
Subject: Re: Macro to define a local region of interest
 
Hi Michael,

I ran doWand as an installed macro and it worked fine on an open image. Is it possible to save the region in the ROI Manager as a new item in a list?

Thanks.

Douglas

Dr Douglas K Benn, BDS,DDS, M.Phil., Ph.D., Dipl. Dental Radiology (Royal College of Radiologists, England).
Professor and Director of Oral & Maxillofacial Radiology
Dept of General Dentistry
Creighton University Dental School
2802 Webster St, Boyne 210
Omaha
Nebraska 68178

Tel: [phone]
Fax: [phone]



-----Original Message-----
From: ImageJ Interest Group on behalf of Michael Schmid
Sent: Wed 6/1/2011 12:29 PM
To: [hidden email]
Subject: Re: Macro to define a local region of interest
 
Hi Douglas,

you can do this with the Wand tool in ImageJ. The macro call is:

  doWand(x, y, tolerance, "8-connected")

where 'tolerance' specifies how much the gray value may deviate from the one at (x,y).

The 'versatile wand' plugin also allows you to specify a maximum gradient and can do selections with inner holes.

  http://imagejdocu.tudor.lu/doku.php?id=plugin:segmentation:versatile_wand:start

Michael
____________________________________________________________________________


On 2011-Jun-01, at 18:47, Benn, Douglas K. wrote:

> I am creating an anatomical atlas of CTs and have a student laboriously
> identifying anatomical points with a mouse click. I would like to use a
> pair of x,y cords as a starting point to automatically search for a
> region which has similar properties in terms of grayness which will
> outline the anatomical structure such as the Maxillary sinus. Is there a
> macro which if you give it a starting x,y coordinate will search around
> to form a closed ROI?
>
> Thanks!
>
> Douglas