Joel Lüthi

Joel Lüthi

@joelluethi.bsky.social

Head of Research and Development of the BioVisionCenter at the University of Zurich

554 Followers 273 Following 69 Posts Joined Nov 2024
1 day ago
Video thumbnail

Streaming OME-Zarr data directly into syGlass for #3DThursday🌍🔬

With #syGlass v2.6.0, datasets can stream from disk, S3, or HTTPS with no massive downloads required.

Huge thanks to the community building open imaging standards:
@openmicroscopy.org

#OMEZarr #Microscopy #OpenScience #Bioimaging

14 3 2 3
3 days ago

If you've been wondering what our current obsession with OME-Zarr and lego blocks is about, I have good news for you: the Fractal preprint is out!

Thanks to @joelluethi.bsky.social , all co-authors, and the Fractal developers and users community for making this beautiful project a reality ❤️

20 5 0 0
2 days ago
Preview
OME 2026 Community Survey Calling all OME Community members, contributors, and lurkers! This year in April, the 19th OME Community Meeting will be gathering to determine the "Future and Governance of OME" during the final mee...

Help shape the future of @openmicroscopy.org! 🔮

The OME 2026 community survey is open—tell us what’s working, what isn’t, and what you'd like to see next.

Takes just a few minutes 👇
forum.image.sc/t/ome-2026-c...

12 10 0 0
2 days ago

Thanks @will-j-moore.bsky.social ! The supplementary videos are available in the supplementary materials tab: www.biorxiv.org/content/10.6...

They are also available on YouTube:
1: www.youtube.com/watch?v=uhv4...
2: www.youtube.com/watch?v=t2Fj...
3: www.youtube.com/watch?v=5Sg1...

1 0 0 0
3 days ago

Calling all OME Community members, contributors, and lurkers! Please take a minute to answer the OME 2026 Community Survey (docs.google.com/forms/d/e/1F...) to help us prepare for discussing the future of OME governance during the OME 2026 Community Meeting at the end of April.

6 7 1 0
3 days ago

@ccp-volumeem.bsky.social I'm very glad we got this out before the hackathon, so I can focus on learning more about the #volumeEM needs, chat & hack with all the participants there! Looking forward to meeting everyone tomorrow & thanks for organising this nice event!

2 0 0 0
3 days ago

Looking forward to learning more about this and how it can be used for #volumeEM at the #CCPvolumeEM #NGFF hackathon at @ebi.embl.org this week!

#BioImageAnalysis @cosec-ukri.bsky.social #OMEZarr

2 2 1 0
3 days ago

Part 2 of the coauthors:
@priscaliberali.bsky.social , @lucaspelkmans.bsky.social & @virginieuhlmann.bsky.social

Also, many thanks to Exact lab, all the Fractal task developers, community collaborators, and core services & facilities at UZH & @fmiscience.bsky.social

3 0 0 0
3 days ago

Many thanks to all coauthors:
Part 1:
@lorenzocerrone.bsky.social , Tommaso Comparin, Max Hess, @rhornb.bsky.social , Adrian Tschan, Gustavo Quintas Glasner de Medeiros, @nrepina.bsky.social , Loredana Cantoni, Fabio Steffen, Jean-Pierre Bourquin

& part 2 in next post

2 0 1 0
3 days ago
Fractal Analytics Platform

Are you also processing OME-Zarrs or developing image analysis methods? Join the community of Fractal task developers or Fractal platform users!

fractal-analytics-platform.github.io

1 0 1 0
3 days ago
Fractal Web Client

Want to see how Fractal looks in action? Check out our public server here: fractal-demo.mls.uzh.ch

1 0 1 0
3 days ago

Finally, we demonstrate that Fractal results in highly-reproducible analysis workflows, enabling drug response profiling in clinical settings

0 0 1 0
3 days ago

We illustrate how Fractal enables the analysis of large and complex bioimage datasets: multiplexed, multiscale, 3D, and 4D

0 0 1 0
3 days ago
YouTube
Fractal web: Accessible workflow building & OME-Zarr data interaction YouTube video by Joel Lüthi

We also demonstrate how a computational platform can leverage this spec to make building and running workflows at scale on HPC clusters accessible through a simple web interface
youtu.be/uhv4rSc_6gs

0 0 1 0
3 days ago

In our preprint, we first introduce a task specification for interoperable image analysis on OME-Zarr files, where inputs & outputs are OME-Zarr. We already have over 100 publicly available processing units implemented following this spec: fractal-analytics-platform.github.io/fractal_tasks/

1 0 1 0
3 days ago

This is the main project we’ve been working on at the BioVisionCenter over the past years. Why?
- Enable interoperable processing steps
- Make image analysis on HPC clusters more accessible
- Scale image processing to TB-sized microscopy datasets
- Increase the reproducibility of bioimage analysis

0 0 1 0
3 days ago

We’re excited to share our latest preprint on Fractal: our approach towards FAIR bioimage analysis at scale with OME-Zarr-native workflows.

Fractal defines interoperable tasks on OME-Zarr and provides a platform for TB-scale image analysis.

(1 / 10🧵)

www.biorxiv.org/content/10.6...

30 17 2 2
3 weeks ago
Preview
GitHub - imaging-formats/bffile: Modern Bio-Formats wrapper with clean lazy Python API Modern Bio-Formats wrapper with clean lazy Python API - imaging-formats/bffile

Rewrote my Python bioformats wrapper (from aicsimageio/bioio) as a standalone package:

- fully bootstrapped Java setup (just pip install)
- lazy, repeatably-indexable Array object
- fully spec-compliant OME-Zarr group obj.
- xarray/dask exports

github.com/imaging-form...
v0.0.rc1 on PyPI

60 23 1 1
1 month ago
Post image

🚀 We’re hiring! The Structural Biology Platform is seeking a Project Leader to advance cryo-electron tomography and expand capabilities at the FMI. Join a vibrant research community at the interface of structural biology, cell biology & disease mechanisms. Apply at: www.fmi.ch/education-ca...

7 7 0 1
1 month ago
Preview
Research Software Engineer - Spatial-omics The Oliver Stegle team and the Bioimage Analysis Support Team at EMBL Heidelberg are looking for a research software engineer to contribute to the development and maintenance of highly-used open-sourc...

We are hiring a Research Software Engineer to enhance and maintain the SpatialData framework.

We will work together with colleagues at EMBL, DKFZ, GSK, and across the scverse community.

🔗 Deadline: 15/02/2026
embl.wd103.myworkdayjobs.com/en-US/EMBL/d...

16 14 0 0
1 month ago
Preview
19th OME Community Meeting - German BioImaging Join us for the 19th Open Microscopy Environment (OME) Community Meeting from 28.-30.4.2026, in the Haus der Universität Düsseldorf. Invited Speakers Carole Goble – Keynote – Jean-Marie Burel Josh Moo...

19th #OME Community Meeting, Düsseldorf · 28–30 April 2026

Registration is now open! Join researchers, developers, and imaging facility staff to connect, share experiences, and discuss the future of OME tools.

Details & registration (deadline: 31 March 2026):
gerbi-gmb.de/event/ome-20...

7 9 0 1
1 month ago
Preview
Scientific Workflows Developer The European Molecular Biology Laboratory (EMBL) is Europe’s life sciences laboratory – an intergovernmental organisation with more than 110 independent research groups and service teams covering the ...

Big news! The Data Management team/Data Science Centre at EMBL (i.e. my team) is hiring for a position based in Heidelberg (but working across all sites!). We are looking for a scientific workflows developer that will focus on multimodal pipelines. embl.wd103.myworkdayjobs.com/en-US/EMBL/j...

16 16 1 0
2 months ago
Video thumbnail

Has napari helped your research this year? Why not say thank you to free and open source software by making a small donation? Every bit helps your friendly core team fix bugs and bring new features to life! CZI will match up to $75K in donations! opencollective.com/napari/donate

19 7 1 0
2 months ago
the napari logo (a two-lobed island) modified to look like a snowman, with Christmas (red/green) colors

We're a bit late in ringing in the giving season, but it is indeed upon us. Enjoy our special edition holiday logo ☃️ and, if you can spare a bit and appreciate napari, please donate to our development efforts! 🙏 CZI will match donations up to $75K.

opencollective.com/napari/donate

17 8 1 0
3 months ago
Preview
Toward better 2D - 3D registration in BigWarp BigWarp has so far focused on 2D-2D or 3D-3D registration, and not on 2D-3D registration. After a conversation with @Christian_Tischer , we thought some simple UI changes could make the support for 2...

Do you have 2D-to-3D image registration challenges? Let me know about them here
forum.image.sc/t/toward-bet...

20 11 0 0
3 months ago
Video thumbnail

I am still digesting all the info from the OME-NGFF hackathon last week.

So I decided to make a little UI for some of the code created there (just to play around), which one can easily show to interested colleagues 😜.

CZI --> OME-ZARR with some options ...

By far not perfect but still fun!

41 1 0 1
3 months ago
OME-Zarr is the answer.
The question was: How do we enable interactive visualisation, FAIR sharing & image analysis at the TB scale? Lorenzo Cerrone demoing visualizing HCS plates stored as OME-Zarr Joel presenting Fractal CytoData 2025 audience

It's been great to present OME-Zarrs & Fractal for interoperable bioimage analysis at the 2025 @cytodata.bsky.social conference in Berlin today. Thanks a lot to the organizers & especially Christopher Schmied for having us!

15 5 0 0
3 months ago
Preview
GitHub - czimaginginstitute/zarr-particle-tools: Particle extraction and reconstruction from OME-Zarr tilt series. Particle extraction and reconstruction from OME-Zarr tilt series. - czimaginginstitute/zarr-particle-tools

Hi #teamtomo! Want to use OME-Zarr for your tilt series but can't integrate it with your existing sub-tomogram averaging pipelines?

Try zarr-particle-tools - RELION-style extraction & reconstruction built for OME-Zarr-based workflows!

📦 pip install zarr-particle-tools
🔗 github.com/czimagingins...

16 7 1 0
4 months ago
Post image

📢 Apply now for the first DL@Janelia Bootcamp (June 4–18, 2026)! 2 weeks of hands-on deep learning for microscopy: train models on your own data, Python needed (no ML experience), housing + meals included, no registration fee

📍 Janelia Research Campus, VA
🗓️ Apply by Jan 15, 2026
🔗 shorturl.at/j4sgY

15 7 0 3
3 months ago

Go read Joel's thread on the hackathon last week in Zürich! If you have any level of interest in OME-NGFF, there are so many exciting things happening. I had a great time meeting some of my favorite people in the world - It was equal parts rewarding, fun and exhausting 🙃️

7 1 0 0