Pls help!!! student project about IMAQ circle detection

I am working on a school project about machine vision. Circle detection function is being used in the project. my tutor require me to explain the basic algorithm and theory used in the IMAQ circle detection. But after a extensive searching, i still can't figure out the Danielsson Function for circle detection even i read the IMAQ concept manual.
Question
1) Does anybody tell me more about the concept used in IMAQ circle detection
2) Does the circle detection function is the same as the Hough transformation??
Any Advice or information is welcome
Thanks a lot

Thank You every much for ur advice. I have searched the web many times. but the search result is not aim to my target. I usually use google to search danielsson function (distance) or machine vision circle detection as key phrase. the result usually refer danielsson as a name of a person. in fact, danielsson is a famous person. but the rare show me the theory. when using the phrase circle detection, it onlt give me hough transform.
does anybody possess some resources about danielsson function for circle detection??!! pls share with me if u could!!
Thanks

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"jangade" <[email protected]> wrote in
message
news:[email protected]...
> Sorry, i still don't understand about that tutorial, can
u explain me more
> detail pls ( i am using php triad: php 4, mysql 1.3 and
apache 1.3 ). i
> give u
> the code :
>
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>
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authorized.
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> }
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> exit;
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> ?><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML
4.01//EN"
> "
http://www.w3.org/TR/html4/strict.dtd">
> <html>
> <head>
> <meta http-equiv="Content-Type" content="text/html;
charset=iso-8859-1">
> <title>Registrasi</title>
> <link href="css/stylesnew.css" type="text/css"
media="screen"
> rel="stylesheet">
> 
> <style type="text/
> ........
>
> how i can get username that user entered(login page) in
new page ?
> pls help me i'm just new bie....
> tks 4 kind attentions,
>
> regds
>
>
>
>
>
>

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