# Agenda 2023-02-16

###### tags: `meeting` `update`
- Attendees
- [x] Adam
- [x] Alan
- [x] Andy
- [x] Chi-Li
- [x] Eric
- [ ] Lucy
- [x] Micah
- [x] Nathan
- [x] Nenad
- [x] Joshua
- [x] Tamie
- Previous Action Items
- [x] CZI team book travel
- [ ] Nathan : debugging on dcam issue [#114](https://github.com/calliphlox/cpx/pull/114)

- Topics
- Pixel metadata demo
- dcam fix demo
- first camera termination bug

- Meeting Minutes
- Pixel metadata demo (by Andy Sweet)
- test_write_ome_zarr in cpx-python
- users can set external_metadata_json to be written out in zarr array attributes
- OME-NGFF has an expected directory structure
- pixel_scale_um is 'microns per pixel' for x-axis & y-axis
- Adam : how is the z-axis (frame spacing) handled?
- Andy : OME-NGFF spec allows for as many dimensions. Additional context needed for whether z-axis is user defined vs. camera config
- Adam : How do we track stage position? Do we have any weight on how that spec would evolve, or is additional stakeholder alignment needed?
- CZI team is speaking with Josh Moore tomorrow. Will bring this up.
- dcam fix demo
- Approach to restart the driver; close all cameras, uninitialize the driver and then restart the driver
- Possible hiccup is that the second camera is still streaming. CZI team still testing; to be completed today.
- Release upcoming w/ fixes
- dcam fix
- better dcam frame timestamping fix
- Micah's Zarr Testing slide
- Further analysis into single frame drops at high rates needed (dcam frame timestamping fix should help)

- Action Items
- [ ] Nathan : bring up Adam's question re: upstream influence example in call w/ Josh Moore
- [ ] Alan : add LZ4 compression support