| how to locate the center of particle? [message #29569] |
Tue, 26 February 2002 15:49  |
fjing5
Messages: 1
Registered: February 2002
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Junior Member |
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Hi, all
There is the website of the image of my experiment.
http://www.geocities.com/fjing5/particle.html
The image shows particles in a solution. I would like to know how
to use IDL to locate the center of each particle. I need
get the x, y coordinates of each particle center and measure the
radius of each particle as accurately and precisely as possible. And
generate an output file to save the coordinates and radius.
Any suggestion from you will be highly appreciated.
Thank you very much!
Jing
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| Re: how to locate the center of particle? [message #29634 is a reply to message #29569] |
Sun, 03 March 2002 10:49  |
Martin Downing
Messages: 136
Registered: September 1998
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Senior Member |
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Jing,
It would be helpful if you put the image in full resolution size on the web
site if we are to properly judge the problem,
failing that, I would recommend using circular hough tranform to find the
radii and centres
cheers
Martin
--
----------------------------------------
Martin Downing,
Clinical Research Physicist,
Grampian Orthopaedic RSA Research Centre,
Woodend Hospital, Aberdeen, AB15 6LS.
Tel. 01224 556055 / 07903901612
Fax. 01224 556662
m.downing@abdn.ac.uk
"Jing Jing" <fjing5@hotmail.com> wrote in message
news:9e6c30ae.0202261549.6e831fae@posting.google.com...
> Hi, all
>
> There is the website of the image of my experiment.
> http://www.geocities.com/fjing5/particle.html
>
> The image shows particles in a solution. I would like to know how
> to use IDL to locate the center of each particle. I need
> get the x, y coordinates of each particle center and measure the
> radius of each particle as accurately and precisely as possible. And
> generate an output file to save the coordinates and radius.
>
> Any suggestion from you will be highly appreciated.
> Thank you very much!
>
> Jing
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