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Circle Detection in ImageJ

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Jan Eglinger-3

Circle Detection in ImageJ

Dear all,

can anyone tell me if the Fast Circle Detection (FCD) described in this
paper:

Fast circle detection using gradient pair vectors (2003)
by Ali Ajdari Rad , Karim Faez , Navid Qaragozlou
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.121.9956

or a similar algorithm has been implemented as an ImageJ plugin yet?

Thx,
Jan

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David Webster

Re: Circle Detection in ImageJ

I could probably modify some existing ImageJ code that I have. How soon do
you need something? Hoe close does it need to be to the algorithm in the
paper?

David Webster

On Fri, Jun 15, 2012 at 7:53 AM, Jan Eglinger
<[hidden email]>wrote:

> Dear all,
>
> can anyone tell me if the Fast Circle Detection (FCD) described in this
> paper:
>
> Fast circle detection using gradient pair vectors (2003)
> by Ali Ajdari Rad , Karim Faez , Navid Qaragozlou
> http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.121.9956
>
> or a similar algorithm has been implemented as an ImageJ plugin yet?
>
> Thx,
> Jan
>
> --
> ImageJ mailing list: http://imagej.nih.gov/ij/list.html
>

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Benjamin Grant

Re: Circle Detection in ImageJ

The circular hough transform has been implemented in imagej, which is
not the algorithm described in the paper so I apologize if this is
irrelevant. I can attest to the hough transform finding circles
pretty reliably though

http://rsbweb.nih.gov/ij/plugins/hough-circles.html

if you're interested
Ben

On Fri, Jun 15, 2012 at 8:29 PM, David Webster <[hidden email]> wrote:

> I could probably modify some existing ImageJ code that I have. How soon do
> you need something? Hoe close does it need to be to the algorithm in the
> paper?
>
> David Webster
>
> On Fri, Jun 15, 2012 at 7:53 AM, Jan Eglinger
> <[hidden email]>wrote:
>
>> Dear all,
>>
>> can anyone tell me if the Fast Circle Detection (FCD) described in this
>> paper:
>>
>> Fast circle detection using gradient pair vectors (2003)
>> by Ali Ajdari Rad , Karim Faez , Navid Qaragozlou
>> http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.121.9956
>>
>> or a similar algorithm has been implemented as an ImageJ plugin yet?
>>
>> Thx,
>> Jan
>>
>> --
>> ImageJ mailing list: http://imagej.nih.gov/ij/list.html
>>
>
> --
> ImageJ mailing list: http://imagej.nih.gov/ij/list.html

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David Webster

Re: Circle Detection in ImageJ

I've modified and used the circular Hough code found in ImageJ and it seems
to be pretty fast. Since the algorithm described in the reference may
require a high % of a circles edges to be detected, I wonder if the added
complexity is worth the speedup.

David Webster

On Fri, Jun 15, 2012 at 6:35 PM, Benjamin Grant <[hidden email]> wrote:

> The circular hough transform has been implemented in imagej, which is
> not the algorithm described in the paper so I apologize if this is
> irrelevant. I can attest to the hough transform finding circles
> pretty reliably though
>
> http://rsbweb.nih.gov/ij/plugins/hough-circles.html
>
> if you're interested
> Ben
>
> On Fri, Jun 15, 2012 at 8:29 PM, David Webster <[hidden email]>
> wrote:
> > I could probably modify some existing ImageJ code that I have. How soon
> do
> > you need something? Hoe close does it need to be to the algorithm in the
> > paper?
> >
> > David Webster
> >
> > On Fri, Jun 15, 2012 at 7:53 AM, Jan Eglinger
> > <[hidden email]>wrote:
> >
> >> Dear all,
> >>
> >> can anyone tell me if the Fast Circle Detection (FCD) described in this
> >> paper:
> >>
> >> Fast circle detection using gradient pair vectors (2003)
> >> by Ali Ajdari Rad , Karim Faez , Navid Qaragozlou
> >> http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.121.9956
> >>
> >> or a similar algorithm has been implemented as an ImageJ plugin yet?
> >>
> >> Thx,
> >> Jan
> >>
> >> --
> >> ImageJ mailing list: http://imagej.nih.gov/ij/list.html
> >>
> >
> > --
> > ImageJ mailing list: http://imagej.nih.gov/ij/list.html
>
> --
> ImageJ mailing list: http://imagej.nih.gov/ij/list.html
>

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Ghosh, Papia

Re: Circle Detection in ImageJ

In reply to this post by Benjamin Grant

Hi,

I have taken pictures on a Nikon, saved as an Nd2 file (with both different Z and channel data-sets). Which plugin is best for opening those on a Mac? My goal is to merge individual images (say at z1 Gfp and z2 DAPI). I see one for Windows and the link to the bioformats page for Mac http://loci.wisc.edu/software/bio-formats, but I'm not sure what file I should be down-loading. If I click on the Nd2 link it takes me to something that lists either the native or legacy version.

Thanks in advance for any help.

-----Original Message-----
From: ImageJ Interest Group [mailto:[hidden email]] On Behalf Of Benjamin Grant
Sent: Friday, June 15, 2012 9:35 PM
To: [hidden email]
Subject: Re: Circle Detection in ImageJ

The circular hough transform has been implemented in imagej, which is
not the algorithm described in the paper so I apologize if this is
irrelevant. I can attest to the hough transform finding circles
pretty reliably though

http://rsbweb.nih.gov/ij/plugins/hough-circles.html

if you're interested
Ben

On Fri, Jun 15, 2012 at 8:29 PM, David Webster <[hidden email]> wrote:

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