---
# System prepended metadata

title: Agenda 2023-02-16
tags: [meeting, update]

---

# 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