[ImageJ-devel] [ImgLib2] The img-metadata branch

[Curtis Rueden]

Hi all,

> I will merge the img-metadata branch to master on Thursday.

Got a bit busy in the interim, but img-metadata is now merged to
imglib.git's master branch:

https://github.com/imagej/imglib/commit/e4e26aa05e0f42ff1a90e8c6d67235431471de44

The commit message gives a quick gist of the changes, including future
directions.

Please let me know of any questions or problems with it!

Regards,
Curtis


On Tue, Jul 30, 2013 at 10:28 AM, Curtis Rueden <ctrueden at wisc.edu> wrote:

> Hi all, and especially ImgLib2 developers,
>
> At the ImgLib2 hackathon this past May, I started work on a branch to make
> it easier to attach per-axis metadata to N-dimensional spaces. I think this
> branch is finally in a merge-worthy state.
>
> It introduces an AnnotatedSpace extension to EuclideanSpace which lets you
> attach on Axis per dimension. It defines TypedSpace, which declares an
> AxisType for each Axis, as well as a CalibratedSpace, which in addition
> adds a calibration value and optional unit name to the mix.
>
> This approach is much more flexible than the previous CalibratedSpace,
> which has been renamed to OldCalibratedSpace and deprecated until we can
> fully transition all the code away from it. In particular, having the axes
> attached to the space directly will allows Views to maintain the axis
> metadata without much additional work.
>
> Note that these new classes are defined in the net.imglib2.meta component,
> which was split into a separate module called imglib2-meta. The ImgPlus
> class moved there, too (it should have been there all along). So merging
> this branch will cause some code breakage, but all should be
> straightforward to fix: rename usages of CalibratedSpace to
> OldCalibratedSpace, and rename the ImgPlus package from net.imglib2.img to
> net.imglib2.meta.
>
> Going forward, we can also add a CalibratedViews class to the
> net.imglib2.meta package which has some additional features such as
> exposing resampled Imgs from a source CalibratedSpace into a target one
> based on the units used. We can lean on a units library for this, as we
> have discussed in the past.
>
> If interested, you can browse the branch at:
> https://github.com/imagej/imglib/compare/img-metadata
>
> If no one objects, I will merge the img-metadata branch to master on
> Thursday.
>
> Regards,
> Curtis
>
>
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