Re: difficulty with bUnwapj transfomations in macros

Posted by Jirka on
URL: http://imagej.273.s1.nabble.com/difficulty-with-bUnwapj-transfomations-in-macros-tp5017916p5017967.html

I tried to swap the X, Y coordinates and also use both direct and inverse
transform, but nothing helps, never the less if the actual approach is used
on a rectangular images with elastic transformation, it fits perfectly (see
attachment). From my point of view the problems comes with different image
sizes that probably instead dividing 1.15 (scale) it is multiplied...

[image: Inline images 1]

--
Best regards, Jiri Borovec
------------------------------------------------------------------------
Ing. Jiri Borovec, MSc  <[hidden email]>
PhD student at CMP CTU, http://cmp.felk.cvut.cz/~borovji3

On 30 January 2017 at 11:52, Ignacio Arganda-Carreras <
[hidden email]> wrote:

> Could it be that you are reading the transformation the wrong way?
>
> The raw transformation stores for each position in the target image, the
> indexes of the source image that are needed to fill the warped result in
> target space.
>
> On Sun, Jan 29, 2017 at 8:21 PM, Ignacio Arganda-Carreras <
> [hidden email]> wrote:
>
> > Hello Jiri,
> >
> > Sorry for the late answer. I pay more attention to the ImageJ forum
> > <http://forum.imagej.net/> these days.
> >
> > This can be a bug, I will look into it and be back to you.
> >
> > Cheers!
> >
> > ignacio
> >
> > On Wed, Jan 18, 2017 at 1:52 PM, Jiří Borovec <[hidden email]>
> > wrote:
> >
> >> Hello all,
> >> may I have question about the bUnwarpJ plugin. I already searched over
> >> Internet, but not succeed much. I have a case - register two images
> >> together, then warp the source image to target image and in the end
> >> generate the raw transformation to be able show some important points in
> >> the warped image according their positions in source image. (In this
> >> moment
> >> I don't race much about quality of the registration.) This perfectly
> works
> >> when both image are the same size but in following case the source image
> >> is
> >> smaller then the target one. Would you have an advice where am I making
> >> mistake?
> >>
> >> In attachment are two images to be registered together with two list of
> >> related points. there is the macro I used for registration, warping
> image
> >> and converting raw transformation and also there is a script that parse
> >> the
> >> raw transform (as I understood it displacement field for X and Y
> >> coordinate) and show the points in image for input source image and
> warped
> >> image.
> >>
> >> Thanks
> >> --
> >> Best regards, Jiri Borovec
> >> ------------------------------------------------------------
> ------------
> >> Ing. Jiri Borovec, MSc  <[hidden email]>
> >> PhD student at CMP CTU, http://cmp.felk.cvut.cz/~borovji3
> >>
> >> --
> >> ImageJ mailing list: http://imagej.nih.gov/ij/list.html
> >>
> >
> >
> >
> > --
> > Ignacio Arganda-Carreras, Ph.D.
> > Ikerbasque Research Fellow
> > Departamento de Ciencia de la Computacion e Inteligencia Artificial
> > Facultad de Informatica, Universidad del Pais Vasco
> > Paseo de Manuel Lardizabal, 1
> > 20018 Donostia-San Sebastian
> > Guipuzcoa, Spain
> >
> > Phone : [phone] <943%2001%2073%2025>
> > Website: http://sites.google.com/site/iargandacarreras/
> > <http://biocomp.cnb.csic.es/~iarganda/index_EN.html>
> >
>
>
>
> --
> Ignacio Arganda-Carreras, Ph.D.
> Ikerbasque Research Fellow
> Departamento de Ciencia de la Computacion e Inteligencia Artificial
> Facultad de Informatica, Universidad del Pais Vasco
> Paseo de Manuel Lardizabal, 1
> 20018 Donostia-San Sebastian
> Guipuzcoa, Spain
>
> Phone : [phone]
> Website: http://sites.google.com/site/iargandacarreras/
> <http://biocomp.cnb.csic.es/~iarganda/index_EN.html>
>
> --
> ImageJ mailing list: http://imagej.nih.gov/ij/list.html
>

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