Re: Align images by ROI

Posted by Riccardo Cabbri on
URL: http://imagej.273.s1.nabble.com/Advice-for-GUI-plugin-development-tp5001300p5001370.html

Probably I didn't explain well my problem in the previous emails.
I don't need higher order transformation, shift and rotation are enough.
This is why I'm trying to find a way to register my images in the
simpliest and fastest method possible with a few ROI.
The plugin that is closer to my needs is "Align images by line ROI" but
with RGB support.
Maybe there's nothing like this out there...but why not give it a try in
this super-helpful mailinglist?
Many thanks for your time Stephan and thanks to anyone will answer!
Riccardo
On 11/01/2013 15:22, Stephan Saalfeld wrote:

> Riccardo,
>
> a single line segment makes only two points.  You can just set the start
> and end-point of the line and then estimate a translation (shift only),
> rigid transformation (shift and rotation), or similarity transformation
> (shift, rotation, and isotropic scale).  For higher order
> transformations, you need more points that are not on a single line.
>
> If you have more than one line segment, you can convert them to start
> and end points each and you will be fine.
>
> Read about the Roi methods---it's probably fairly easy to do.
>
> Best,
> Stephan
>
>
>
>
> On Fri, 2013-01-11 at 15:09 +0100, Riccardo Cabbri wrote:
>> Hi Stephan,
>> thanks for the advice!
>> Your plugin works very well, but I don't have so many secure
>> correspondence points on my images, so I am thinking about the
>> possibility of converting some lines in a group of points.
>> Do you think that a couple of lines would generate enough points for the
>> plugin?(maybe it is possible to have one point for every pixel of the line).
>> Is there a way to do this in imagej?
>> Many thanks!
>> Riccardo
>>
>> On 07/01/2013 00:21, Stephan Saalfeld wrote:
>>> Hi Riccardo,
>>>
>>> have you checked this:
>>>
>>> http://fiji.sc/wiki/index.php/Landmark_Correspondences
>>>
>>> ?  Instead of a line you would use points, but that shouldn't make it
>>> more difficult.  The benefit is that the plugin offers more choices for
>>> the desired transformation model and that it can handle all types of
>>> images.
>>>
>>> Best,
>>> Stephan
>>>
>>>
>>>
>>>
>>>
>>>
>>> On Sat, 2013-01-05 at 16:22 +0100, Riccardo Cabbri wrote:
>>>> Hi everybody,
>>>> My goal is to use ImageJ/Fiji to compare images of the same object taken
>>>> in different times, so I want to align them using ROI.
>>>> I found thishttp://fiji.sc/wiki/index.php/Align_Image_by_line_ROI  that
>>>> is almost pefect but can't handle RGB images.
>>>> Are there any alternatives?
>>>> Thanks in advance!
>>>>
>>>> --
>>>> ImageJ mailing list:http://imagej.nih.gov/ij/list.html
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