supported. From the git history, we can see that support for color images
It appears the documentation is simply outdated. It is a wiki—please feel
> I seem to have confused myself. I don't remember how I got into this
> confusion, so I'm asking
> for guidance.
>
> We do a lot of image registration. For stacks of images captured using
> the same methods, we generally
> use SIFT. But, we also deal with multi-modal images, where gray-levels
> may be reversed, and "matching
> features" don't obviously "match". In those cases, we rely on user input
> to select common landmarks.
> Often, the images to be registered are different types (RGB, 8-bit, Float)
> and sizes.
>
> Some time ago, I wrote a plugin that accepts 1, 2, or 3 landmarks in each
> image, and uses "barycentric" interpolation
> to define a mapping from one image to the other. When 1 common landmark
> exists, only Translation is used; when 2, I use Translation, Rotation, and
> Scale; when 3 are supplied, I do a more general transformation which maps
> the two triangles
> onto each other exactly. (Actually, I always match two triangles, but
> when only 1 or 2 common landmarks are provided I construct artificial
> landmarks to create a complete triangle in each image).
>
> Virtually always, it turned out that 2 landmarks (giving a TRS
> transformation) was what we needed. I then "discovered"
> the "align with Line Roi" plugin. This has worked just fine.
>
> Now, however, I can't tell WHERE I found it - and I'm having trouble
> giving instructions to users who want to install
> everything we need on their many machines.
>
> So...is this plugin included in the standard FIJI distribution? Or, must
> it be manually added?
>
> Second - when I search for it, I find it, with documentation that says it
> only handles gray images. The one I have
> installed handles RGB images (and seems to change the source image to
> match the target). Hence, my confusion...
>
> While I have you - I would appreciate expert guidance as to the "best"
> tool for this job. Again, the requirements are:
>
> a) handles all image types (preferably by NOT requiring or enforcing all
> images to be the same type)
> b) uses user input to provide 1,2,3, (or more?) matching landmarks
>
> And, of course, where to find your preferred plugin.
>
> Note: for image STACKS, I suppose all images will already be the same size
> and type. For multi-modal images, my
> preference is to register the images one-at-a-time against a single master
> image. Changing the SIZE of the
> source image to match the target is OK, but I would prefer to NOT be
> forced to match image TYPE. But...the images
> will probably eventually end up in a Stack, so it's not too onerous to use
> a common type (as long as RGB is supported).
> In general, I prefer RGB for all color images, and tend to prefer Float
> for grayscale images.
>
> My fallback will be to revive and harden my BarycentricRegistration plugin
> - but I'm trying to use "standard" tools where available.
>
> --
> Kenneth Sloan
>
[hidden email]
> Vision is the art of seeing what is invisible to others.
>
> --
> ImageJ mailing list:
http://imagej.nih.gov/ij/list.html>