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Can't get Extract SIFT Correspondences to work in ImageJ

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Can't get Extract SIFT Correspondences to work in ImageJ

Ned Horning
9 posts
Hi - I am trying to run the plugin "Extract SIFT Correspondence" in
ImageJ and I get an error: “Plugin or class not found:
SIFT_ExtractPointPoi”. I copied the mpicbg_.jar file from the Fiji
plugins directory to the ImageJ plugins directory and the SIFT plugin
appears in the Plugins menu as expected.

Last Friday I posted a message about problems I'm having writing plugins
in Eclipse. I haven't been able to make progress with that (advice still
appreciated) but I wanted to make it clear that for this problem I am
running ImageJ as an Ubuntu application. I expect I'm doing something
really stupid but after two days I haven't been able to figure it out.

All the best,

Ned

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Re: Can't get Extract SIFT Correspondences to work in ImageJ

dscho
1631 posts
Hi Ned,

On Mon, 2 Jul 2012, Ned Horning wrote:

> Hi - I am trying to run the plugin "Extract SIFT Correspondence" in ImageJ and
> I get an error: “Plugin or class not found: SIFT_ExtractPointPoi”. I copied
> the mpicbg_.jar file from the Fiji plugins directory to the ImageJ plugins
> directory and the SIFT plugin appears in the Plugins menu as expected.

Most likely you are missing mpicbg.jar (which lives in Fiji's jars/
directory, but for plain ImageJ 1.x it has to live in plugins/, too).

Ciao,
Johannes

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Re: Can't get Extract SIFT Correspondences to work in ImageJ

Ned Horning
9 posts
Hi Johannes,

Thanks so much. That did the trick and of course it seems to have solved
the problem I was having building my plugin using Eclipse. I had no idea
there were two sets of jar files for some plugins. I have a lot to learn...

All the best,

Ned

On 07/02/2012 02:42 PM, Johannes Schindelin wrote:

> Hi Ned,
>
> On Mon, 2 Jul 2012, Ned Horning wrote:
>
>> Hi - I am trying to run the plugin "Extract SIFT Correspondence" in ImageJ and
>> I get an error: “Plugin or class not found: SIFT_ExtractPointPoi”. I copied
>> the mpicbg_.jar file from the Fiji plugins directory to the ImageJ plugins
>> directory and the SIFT plugin appears in the Plugins menu as expected.
> Most likely you are missing mpicbg.jar (which lives in Fiji's jars/
> directory, but for plain ImageJ 1.x it has to live in plugins/, too).
>
> Ciao,
> Johannes

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Re: Can't get Extract SIFT Correspondences to work in ImageJ

Stephan Saalfeld
147 posts
Hi Ned,

mpicbg.jar in Fiji's jars folder is supposed to contain all library
parts, mpicbg_.jar in plugins contains the ImageJ/Fiji plugins that make
use of it.  For actually writing code re-using the libraries, mpicbg.jar
is the more important file (it also generates more informative
javadocs).

Instead of running the plugins from a plugin (which means text-based
blind guessing in most cases) I would inspect the actual plugin's code
and see how it actually does it with the library---that will get you
further and also generate the right errors at compile or code time :).

Hope you're having fun.

Best,
Stephan




On Mon, 2012-07-02 at 15:28 -0400, Ned Horning wrote:

> Hi Johannes,
>
> Thanks so much. That did the trick and of course it seems to have solved
> the problem I was having building my plugin using Eclipse. I had no idea
> there were two sets of jar files for some plugins. I have a lot to learn...
>
> All the best,
>
> Ned
>
> On 07/02/2012 02:42 PM, Johannes Schindelin wrote:
> > Hi Ned,
> >
> > On Mon, 2 Jul 2012, Ned Horning wrote:
> >
> >> Hi - I am trying to run the plugin "Extract SIFT Correspondence" in ImageJ and
> >> I get an error: “Plugin or class not found: SIFT_ExtractPointPoi”. I copied
> >> the mpicbg_.jar file from the Fiji plugins directory to the ImageJ plugins
> >> directory and the SIFT plugin appears in the Plugins menu as expected.
> > Most likely you are missing mpicbg.jar (which lives in Fiji's jars/
> > directory, but for plain ImageJ 1.x it has to live in plugins/, too).
> >
> > Ciao,
> > Johannes
>
> --
> ImageJ mailing list: http://imagej.nih.gov/ij/list.html

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Re: Can't get Extract SIFT Correspondences to work in ImageJ

Ned Horning
9 posts
Hi Stephan,

Thanks for the explanation and clarification. For now it's a lot easier
using IJ.run but my intent is to learn to use the SIFT library directly.
It's still a bit overwhelming but it's slowly beginning to make sense.

All the best,

Ned

On 07/02/2012 03:48 PM, Stephan Saalfeld wrote:

> Hi Ned,
>
> mpicbg.jar in Fiji's jars folder is supposed to contain all library
> parts, mpicbg_.jar in plugins contains the ImageJ/Fiji plugins that make
> use of it.  For actually writing code re-using the libraries, mpicbg.jar
> is the more important file (it also generates more informative
> javadocs).
>
> Instead of running the plugins from a plugin (which means text-based
> blind guessing in most cases) I would inspect the actual plugin's code
> and see how it actually does it with the library---that will get you
> further and also generate the right errors at compile or code time :).
>
> Hope you're having fun.
>
> Best,
> Stephan
>
>
>
>
> On Mon, 2012-07-02 at 15:28 -0400, Ned Horning wrote:
>> Hi Johannes,
>>
>> Thanks so much. That did the trick and of course it seems to have solved
>> the problem I was having building my plugin using Eclipse. I had no idea
>> there were two sets of jar files for some plugins. I have a lot to learn...
>>
>> All the best,
>>
>> Ned
>>
>> On 07/02/2012 02:42 PM, Johannes Schindelin wrote:
>>> Hi Ned,
>>>
>>> On Mon, 2 Jul 2012, Ned Horning wrote:
>>>
>>>> Hi - I am trying to run the plugin "Extract SIFT Correspondence" in ImageJ and
>>>> I get an error: “Plugin or class not found: SIFT_ExtractPointPoi”. I copied
>>>> the mpicbg_.jar file from the Fiji plugins directory to the ImageJ plugins
>>>> directory and the SIFT plugin appears in the Plugins menu as expected.
>>> Most likely you are missing mpicbg.jar (which lives in Fiji's jars/
>>> directory, but for plain ImageJ 1.x it has to live in plugins/, too).
>>>
>>> Ciao,
>>> Johannes
>> --
>> ImageJ mailing list: http://imagej.nih.gov/ij/list.html
> --
> ImageJ mailing list: http://imagej.nih.gov/ij/list.html

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