registration error calculation

[jay chen]

Dear all:

       I am an imageJ beginner.  I am sorry If my question is not
appropriate.  My advisor asks me to register two 2D phantom images
using different registration methods and calculate the corresponding
registration errors.  So we will know which method to use for later
study.  Because there are no markers in my images, I plan to put some
markers on them.  After registration, I can calculate translation and
rotation values using coordinates of these markers.  Is my thought
correct ?  If yes, could someone tell me how to do this step by step ?
 Your comments are appreciated.

                              Best Regards,
                              Jay Chen

[Joel Sheffield]

Take a look at the "stack reg" and "turboreg" plugins that are
listed on the main ImageJ site.
Best of luck.

Joel


---- Original message ----
>Date: Sun, 2 Mar 2008 10:57:04 +0800
>From: jay chen <[hidden email]>  
>Subject: registration error calculation  
>To: [hidden email]
>
>Dear all:
>
>       I am an imageJ beginner.  I am sorry If my question is not
>appropriate.  My advisor asks me to register two 2D phantom
images
>using different registration methods and calculate the
corresponding
>registration errors.  So we will know which method to use for
later
>study.  Because there are no markers in my images, I plan to
put some
>markers on them.  After registration, I can calculate
translation and
>rotation values using coordinates of these markers.  Is my
thought
>correct ?  If yes, could someone tell me how to do this step
by step ?
> Your comments are appreciated.
>
>                              Best Regards,
>                              Jay Chen

Joel B. Sheffield
Professor, Department of Biology
Temple University
Philadelphia, PA 19122
[hidden email]
http://astro.temple.edu/~jbs

[Albert Cardona]

Hi Jay,


For all your registration needs, I've compiled a plugin to register
stack slices.

The plugin takes a folder with a list of images, each image a slice.
It registers them all with a translation-only or translation and
registation model.
Then it outputs another list of images, registered, and opens a virtual
stack with them.

See the plugin here:

http://www.ini.uzh.ch/~acardona/howto.html#register_virtual_stack

The plugin uses phase-correlation (very fast) for translation only,
and SIFT (scale invariant feature transform, from Lowe 2004) for
translation and rotation.

Works with both RGB and grayscale images.

Hope that helps.

Albert

--
Albert Cardona
http://www.mcdb.ucla.edu/Research/Hartenstein/acardona