Plugin: Non-destructive Circular Grid Overlay

[Nikhil Angelo]

Good day,

I am searching for a non-destructive overlay, that would create a grid
comprising of concentric circles.  I need to be able to adjust the radii of
the inner and outer circles, the spacing between the concentric rings, and
be able to adjust the number of concentric circles.  Finally, I hope that
the overlay would not affect measurements of pixel intensity of ROI that lie
along the rings.

If anyone has an available plugin that enables me to do all of this, I would
greatly appreciate it.  You may reach me by at [hidden email].

Thank you and have a nice day,

Nikhil Angelo


--
Nikhil Angelo
6985 Snow Way Dr.
Campus Box 6933
St. Louis, MO 63130
[hidden email]

[Frederic V. Hessman]

You may be able to use my Aperture Photometry Tool, which uses 3  
concentric circles (inner radius for measurement and outer radii for  
definition of background).   Each measurement can be marked by non-
destructive semi-permanent ROI's displayed in an overlay which can be  
cleared for re-use.  If you need more than 1 or 3 radii, you'll have  
to modify the code (also available at http://www.astro.physik.uni- 
goettingen.de/~hessman/ImageJ/Astronomy/).

Rick

On 17 May 2007, at 9:43 pm, Nikhil Angelo wrote:

> Good day,
>
> I am searching for a non-destructive overlay, that would create a grid
> comprising of concentric circles.  I need to be able to adjust the  
> radii of
> the inner and outer circles, the spacing between the concentric  
> rings, and
> be able to adjust the number of concentric circles.  Finally, I  
> hope that
> the overlay would not affect measurements of pixel intensity of ROI  
> that lie
> along the rings.
>
> If anyone has an available plugin that enables me to do all of  
> this, I would
> greatly appreciate it.  You may reach me by at [hidden email].
>
> Thank you and have a nice day,
>
> Nikhil Angelo
>
>
> --
> Nikhil Angelo
> 6985 Snow Way Dr.
> Campus Box 6933
> St. Louis, MO 63130
> [hidden email]

------------------------------------------------------------------------
------------------------
Dr. Frederic V. Hessman     [hidden email]
Institut für Astrophysik          Tel.  [phone]
Friedrich-Hund-Platz 1         Fax [phone]
37077 Goettingen                 Room F04-133
http://www.Astro.physik.Uni-Goettingen.de/~hessman
------------------------------------------------------------------------
-------------------------
MONET: a MOnitoring NEtwork of Telescopes
http://monet.Uni-Goettingen.de
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-------------------------

[Wayne Rasband]

The Concentric_Circles plugin at

     http://rsb.info.nih.gov/ij/plugins/concentric-circles.html

does this.

-wayne

On May 17, 2007, at 3:43 PM, Nikhil Angelo wrote:

> Good day,
>
> I am searching for a non-destructive overlay, that would create a grid
> comprising of concentric circles.  I need to be able to adjust the
> radii of
> the inner and outer circles, the spacing between the concentric rings,
> and
> be able to adjust the number of concentric circles.  Finally, I hope
> that
> the overlay would not affect measurements of pixel intensity of ROI
> that lie
> along the rings.
>
> If anyone has an available plugin that enables me to do all of this, I
> would
> greatly appreciate it.  You may reach me by at [hidden email].
>
> Thank you and have a nice day,
>
> Nikhil Angelo
>
>
> --
> Nikhil Angelo
> 6985 Snow Way Dr.
> Campus Box 6933
> St. Louis, MO 63130
> [hidden email]
>