# 1st GYBS OME-NGFF BoF Notes

## Attendees

- John Bogovic
- Lydia Ng
- Iana Vasylieva
- Ebrahim Ebrahim
- Hastings Greer
- Dzenan Zukic
- Paul Elliott
- Tom Birdsong

## OME-NGFF spec

- https://ngff.openmicroscopy.org/latest/

## Xarray / OME-Zarr compatibility

Dask / xarray support

- https://docs.xarray.dev/en/stable/
https://github.com/astropenguin/xarray-dataclasses
- https://github.com/spatial-image/spatial-image-ngff

- Contribute to the ome-ngff transform discussion
- https://github.com/ome/ngff/issues/94
-

## Current and next standards

- v0.4 (released)
- scale
- transformation
- units
- v0.5 (next)
- affine
- displacementfield
- ...
- spaces / coordinate systems
- rigid rotation
- multiple-representations?
- Conversion reference library / representation conversion library
- Linear and displacement field

## Other considerations

* decomposing an affine into sub componsents (scale/rotation)
* there are ambiguities
* Warnings when crucial metadata is missing
* Provide a UI / interface to make it easy to fix metadata

* please do path-finding for book-keeping lists of transformations -John
* Lydia on board
* Matt on board
* arrays should always have a spacing and translation -Matt
* users need and want to see them -Lydia
* do we have different "names" for transformations that describe array<>physical
* Organization / association with usability / mental models: grouped image spacing-mental
* A python implementation of generating ome-ngff images with xarray metadata -Matt