Pls: on Hough transformation and its results with ImageJ

[Juan Francisco-2]

Hi all:
  after apply the Hough transformation to an imagen using ImageJ, I can see graphycally the center of the circle I want to find. However, does anyone how its possible ÍmageJ geneartes a report with the center coordinates of the circles detected using Hough tool (Plugins--->Hough Circles)?
  Thank you very much!!
  Juan Francisco
   

 
---------------------------------

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[Gary Chinga]

Juan,

You can threshold the image with respect to the Hough marks and then  
run the Analyze Particles... Try the following macro on the binary  
image:

run("Hough Circles", "radius=10 radius=20 radius=2 number=10  
threshold=60");
//selectWindow("10 Circles Found");
run("Make Binary");
run("Set Measurements...", "  centroid redirect=None decimal=3");
run("Analyze Particles...", "size=0-Infinity circularity=0.00-1.00  
show=Nothing display clear");

Change the Hough parameters according to your requirements. This may  
work as long as the marks are not touching each other. Can also be  
expanded to perform the analysis on stacks.

Gary.
www.gcsca.net



On Apr 9, 2007, at 1:12 PM, Juan Francisco wrote:

> Hi all:
>   after apply the Hough transformation to an imagen using ImageJ, I  
> can see graphycally the center of the circle I want to find.  
> However, does anyone how its possible ÍmageJ geneartes a report  
> with the center coordinates of the circles detected using Hough  
> tool (Plugins--->Hough Circles)?
>   Thank you very much!!
>   Juan Francisco
>
>
>  
> ---------------------------------
>
> LLama Gratis a cualquier PC del Mundo.
> Llamadas a fijos y móviles desde 1 céntimo por minuto.
> http://es.voice.yahoo.com
>
>

[Kenneth Sloan-2]

On Apr 9, 2007, at 7:03 AM, Gary Chinga wrote:

> Juan,
>
> You can threshold the image with respect to the Hough marks and  
> then run the Analyze Particles... Try the following macro on the  
> binary image:
>

With all due respect...that's a bit silly, isn't it?  Is there really  
no way to simply report
the circles found?

--
Kenneth Sloan                                          
[hidden email]
Computer and Information Sciences                        [phone]
University of Alabama at Birmingham              FAX [phone]
Birmingham, AL 35294-1170                http://www.cis.uab.edu/sloan/

[Gary Chinga]

This was a simple suggestion... It should not be difficult to look  
into the code and create a result table containing the coordinates.  
You may perhaps want to spend some time updating the plugin,?.

Or this may be a good suggestion for the authors of the Hough_Circles...

Gary.


On Apr 9, 2007, at 6:48 PM, Kenneth Sloan wrote:

> On Apr 9, 2007, at 7:03 AM, Gary Chinga wrote:
>
>> Juan,
>>
>> You can threshold the image with respect to the Hough marks and  
>> then run the Analyze Particles... Try the following macro on the  
>> binary image:
>>
>
> With all due respect...that's a bit silly, isn't it?  Is there  
> really no way to simply report
> the circles found?
>
> --
> Kenneth Sloan                                          
> [hidden email]
> Computer and Information Sciences                        
> [phone]
> University of Alabama at Birmingham              FAX [phone]
> Birmingham, AL 35294-1170                http://www.cis.uab.edu/sloan/
>
>