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# System prepended metadata

title: NGFF Community Call 2020-12-02 (with I2K)
tags: [' community-call', NGFF]

---

---
tags: NGFF, community-call
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# NGFF Community Call 2020-12-02 (with I2K)

* See: [Connection information](https://forum.image.sc/t/connection-information-for-next-gen-call-on-dec-2nd/46007) and [previous call](https://hackmd.io/_sftykiGR9mSyUan3l1WmA?view)
* No recording

## Session 1 (1200 UTC)

 - Attending:
   - U. Dundee: Josh Moore, David Gault, Seb Besson
   - EMBL: Christian Tischer
   - Janelia: Blair Rosetti, Mark Kittisopikul
   - JAX: Dave Mellert, Eric Perlman, Erick Ratamero
   - RIKEN: Ken Ho
 
* ImariWriter (Mark)
  - checked performance and could reproduce benchmarks
  - looking into the use of the optimized IO routines as a possible new backend for the N5 API
  - Tischi: why IMS? good for middlerange data
  - parallel codec to go along with HDF5s optimized IO routines
  - Mark: looking to add as another N5 API backend

* Remote downsampling
  - Keller is/wwas worried about subresolutions
  - split downsampled resolutions from the original volume
  - bidirectionality is an issue; can put the slow version on something other than S3

* Compression
  - wavelets as an option for partial reads compared to lossy/jpeg
  - jpeg in numcodecs
  - zarr_implementations for testing

* S3 in general
  - remote viewing
  - permissions as a train-wreck. wild-west compared to POSIX.

* bioformats2raw
  - Eric: interested in bf2raw with n5-spark directly to s3

* Rechunker
  - https://github.com/pangeo-data/rechunker

* metadata
  - see https://forum.image.sc/t/metadata-for-ome-next-generation-file-format-ngff/44373/25

## Session 2 (2000 UTC)

* Largely private chat between Josh & Nick