WG 2 – Detection system performance

Home / Working Groups / WG 2 – Detection system performance

WG 2 – Objectives

WG2 focuses on the detection system, comprising the detection path and its detector(s), and how it measures the signal from the sample.

Members of WG2 aim to standardize the characterization of the detection system performance and create standard procedures for monitoring it over time, thereby revealing performance issues that could affect data reproducibility. Therefore, WG2 will define universal, externally measurable parameters applicable to any type of detector (e.g., photons, linearity, noise), together with measurement tools and protocols for measuring these parameters from common detector types. These universal parameters will be specified according to each distinct type of detector’s internal parameters, which have already been defined by the community. They will enable the evaluation and comparison of different detection systems, thus pinpointing the most suitable technology for given applications.

WG 2 – Co-Chairs

WG 2 - Latest News

We warmly welcome our first member from Ukraine, Dr. Borys Olifirov, from the Bogomoletz Institute of Physiology of NAS of Ukraine who just joined Working Group 2, 5, 6, 7 and 8.

We welcome a new member to our working groups 2, 3, 10, 11 and 12. Mr. Aleš Kladnik from, the Biotechnical Faculty of University of Ljubljana in Slovenia just joined QUAREP-LiMi.

 

Upcoming meeting: 12th October 2026, 5:00 pm
Upcoming meeting: 14th September 2026, 5:00 pm
Last meeting: 13th July 2026, 5:00 pm

56th meeting, 10th of November 2025

Meeting date

10/11/2025 @ 5:00 PM (CET/CEST)

Meeting summary

Agenda

  1. Organizational matters and News
  2. Update on theory paper
  3. Short update on NBO-Q camera model & glossary
  4. Discussion about dexel vs pixel text

Summary

After an initial discussion and open question about the correct procedure for writing the paper—particularly regarding contributions and data sharing—the conversation moved to the paper draft. The subgroup presented the main document they are working on and addressed key points such as the choice of journal and the paper format, which will likely be a scientific report or review. It was agreed that formal guidelines and a brainstorming session will be needed to define protocol updates and determine how much new data can be included. At the beginning of next year, a smaller subgroup should be formed with clearer ideas on these issues, and efforts should be made to invite additional contributors, especially from company representatives.
A brief summary of the last Steering Committee meeting followed: new funding opportunities were confirmed, and the success of the DFG application was noted. The need to create an OMERO subgroup was highlighted, and Britta reported on her presentation during a Springer/Nature webinar on WG2 protocols. The group also discussed concerns about FAIR data sharing costs but concluded that the topic extends beyond WG2; the Steering Committee will be informed. Additional updates were provided on the NBO-Q camera model and glossary, as well as on the ongoing discussion regarding dexel versus pixel terminology together with WG10.

Meeting documentation

55th meeting, 13th of October 2025

Meeting date

13/10/2025 @ 5:00 PM (CET/CEST)

Meeting summary

Agenda

  1. Organizational matters and News
  2. New name for NBO-Q model
  3. Update on NBO-Q camera model & glossary
  4. Discussion about dexel vs pixel text
  5. Update on theory paper
Summary
At the beginning of our meeting, we shared information from the SC meeting: a big NSF grant was approved and process for finding a better suited name for our model was agreed.
Next, we discussed the proposed names for the model to replace NBO-Q and agreed that WG2 endorses the suggestions by WG7: LiMi Model. Our camera part of the model is still in the process of being finished, one more meeting round needs to be organised. Specifically, the definitions and describing texts for pixels (as picture elements) and dexels (as detector elements) need to be finalised. We discussed the suggested definitions and text drafts. In the last part of the meeting, the paper subgroup reported about their progress. The content of the work in progress will be shared on the QUAREP-LiMi cloud, in a folder privat to the paper subgroup.
 

Meeting documentation

54th meeting, 8th of September 2025

Meeting date

08/09/2025 @ 5:00 PM (CET/CEST)

Meeting summary

Agenda

  1. Organizational matters and News
  2. Update on NBO-Q camera model & glossary
  3. Updates after the summer break (paper, automation…)
  4. Decide on next priorities
Summary
The meeting welcomed new member Kemp Watson and covered organizational updates from the steering committee, including various project developments and upcoming meetings scheduled for October and November. The working group discussed their focus on detection system performance, including camera models and standardized terminology for microscopy systems, while also addressing the progress of a manuscript related to protocol series. The team reviewed developments of the Nikon toolkit and discussed next steps for their project, including the sequential completion of camera work before moving to other detector types.
 

Meeting documentation

53rd meeting, 23rd of June 2025

Meeting date

23/06/2025 @ 5:00 PM (CET/CEST)

Meeting summary

Agenda

  1. Organizational matters and News
  2. Report from ELMI 2025
  3. Update on NBO-Q camera model & glossary
  4. Report from paper working group
  5. Next steps
Summary
The meeting opened with updates from SC and WG7 meetings, including a report from the NBO-Q camera model and glossary project.
Encouraging news was provided about Nature Publishing Group implementing reproducibility checklists inspired by QUAREP-LiMi’s work. These were mentioned in three recent editorials across major journals. However, concerns were raised as essential information is still missing.  A broader conversation on FAIR data sharing followed, highlighting the need to better recognize the cost and effort of data acquisition. QUAREP is encouraged to engage more actively in this direction.
Feedback from ELMI 2025 was very positive—QUAREP-led workshops were well attended and sparked interest among participants, many of whom were new to the initiative. This encouraged us to strengthen our outreach efforts for future international meetings, including next year’s ELMI.
Finally, the paper working group is drafting a publication outlining the foundation of the WG2 protocols. While initial writing has begun, broader input is needed. Future publishing plans for the automation tool and data samples  will depend on the setup of OMERO and collaboration with companies.
 

Meeting documentation

52nd meeting, 12th of May 2025

Meeting date

12/05/2025 @ 5:00 PM (CET/CEST)

Meeting summary

Agenda

  1. Organizational matters and News
  2. QUAREP-LiMi ELMI 2025 workshop contribution
  3. Report from OMERO subgroup meeting
  4. Update on NBO-Q camera model & glossary
  5. Report from paper working group
  6. Next steps

Summary

We started the meeting with discussing our summer meeting scenario. Due to a public holiday and ELMI 2025, we decided to shift our June meeting to June 23rd. In addition, we decided to skip the meetings in July and August to have time for finishing the camera model and glossary, work on the paper, and have time for vacation. We decided to start again with the regular meeting schedule on September 8th.
This summer meeting organisation was followed by a report from the May steering committee meeting. One great news for WG2 was that the SC endorsed the terminology “dexel” for the detector element versus “pixel” as picture element. Next, we briefly discussed the current status of our ELMI workshop preparation.
This was followed by a report from the QUAREP-LiMi OMERO subgroup meeting. A naming convention was introduced by that subgroup, which everybody needs to follow. We discussed how to implement our spreadsheet terms and how to best automate the upload to OMERO. The WG2 co-chairs will look over tags and naming structure for WG2.
This discussion was followed by an update from the NBO-Q camera model and glossary group. The stakeholder group finished working on the hardware part and will now continue with the settings. The plan is to be finished by the end of this summer.
The WG2 paper working group reported from their first meeting where they summarised paper-related content from our past meeting minutes.
We finalised the meeting with summarising the next steps: finalise the NBO-Q camera model and glossary, work on our paper and collect data for it, support WG7 in their work to calibration metadata, and generalise the automation of our WG2 protocols collection to have it eventually working on all microscopy platforms.

Meeting documentation

51st meeting, 14th of April 2025

Meeting date

14/04/2025 @ 5:00 PM (CET/CEST)

Meeting summary

After discussing possible scenarios for our WG2 work during summer, we reported from the SC meeting on April 1st. This was followed by a detailed report from the Annual QUAREP-LiMi Meeting that took place April 10th. The ELMI contribution preparation team reported the submission of three workshop abstracts. Approval was expected to be highly likely (by now all our submitted workshops have been accepted). The NBO-Q camera glossary team could report that the hardware part is finished! Next, the settings part will be tackled, but is not expected to take that long. The rest of the meeting we spend on collecting topics for WG2 to work on in the future: automation for our WG2 protocols, paper to accompany our WG2 protocol collection, collect data for it, NBO-Q model update for point detectors, amongst others. For each of these topics we need to find people to take the lead and define respective time lines.

Meeting documentation

50th meeting, 10th of March 2025

Meeting date

10/03/2025 @ 5:00 PM (CET/CEST)

Meeting summary

Agenda points

  1. Organizational matters and News
  2. Report from the Annual QUAREP-LiMi meeting
  3. ELMI 2025 workshop contribution
  4. Update on NBO-Q camera model & glossary
  5. Next steps

Summary

This meeting was a bit of a house-keeping meeting. After the report from the March SC meeting we briefly discusses our planned contributions to the Annual QUAREP-LiMi meeting. This was followed by setting up a time line and preparation group for organising our contribution to ELMI2025. Next, we had a quick update on the current status of our NBO-Q camera model and glossary project. We closed the meeting with discussing the next projects we need to tackle. We will first focus on preparing our paper and organising collection of data. We will also have to revisit our long-term goals as next big projects.

Meeting documentation

49th meeting, 10th of February 2025

Meeting date

10/02/2025 @ 5:00 PM (CET/CEST)

Meeting summary

This was our first meeting since the publication of our WG2 Protocols collection. Therefore, our main focus was to discuss the next steps for our work. 
We agreed on a key concern: how to collect data now that the protocol is available, and how we can assist users in automating the data collection process for use with the analysis tool. We agreed to use OMERO as our main tool. However, this will require significant work. We need to have an easy way to upload data to the OMERO server. Secondly, we need to determine the metadata necessary to support the main detector parameters that can be analysed using our published protocol tools.
Secondly, we got an update on the progress of the Camera Glossary and Model work. The hardware part is almost done. This will be followed by working on the settings part.
Finally, we decided to use the exciting possibility to present our Protocols collection by offering one or two workshops in the community room during the ELMI meeting in June 2025 in Heidelberg.

Meeting documentation

48th meeting, 13th of January 2025

Meeting date

13/01/2025 @ 5:00 PM (CET/CEST)

Meeting summary

After the usual short organisational matters and news section, we started right away with an overview over the work done on our protocols collection since the last meeting.
There have been done updates to the figures and figure legends, and all links have been checked and updated. All authors gave their consent to their respective authorship, author order, and listed contributions. Author contributions and funding are listed in each protocol via two respective pdfs in the acknowledgment section. In addition, we looked at an example protocol run including how to add comments, to see the difference between viewing a protocol versus running it.
Subsequently, we went through the collection and all protocols to have a last check of the respective content. Several small but significant changes were made. An exhaustive list of this changes can be found in our meeting minutes. We agreed to collect and save all images and figures used for the protocols on the QUAREP-LiMi cloud. A folder will be set up for this in the WG2 work done folder.
At 6:20 PM we did publish our protocols collection. You can find the titles and DOI links below.
After this great achievement we had the pleasure of welcoming our new member Nicolas Stifani from Montreal.
For finalising our other current major project, the NBO-Q camera model and glossary, there are four meetings scheduled in January. There will be a detailed report about this project in the February meeting. In addition, in the next meeting we will take time to discuss the next steps and goals for our future WG2 work.
Collection:
Characterization of the Photon Conversion Factor, Noise, and Dynamic Range of Light Microscope Detection Systems
Separate protocols:

1. Introduction – Background and Aims

DOI: dx.doi.org/10.17504/protocols.io.eq2lyw5mevx9/v1

2. Sample Preparation – An Easy-to-Prepare Sample Slide

DOI: dx.doi.org/10.17504/protocols.io.x54v92b91l3e/v1

3. Data Generation – Systems with an Area Detector

DOI: dx.doi.org/10.17504/protocols.io.bp2l62eorgqe/v1

4. Data Generation – Systems with a Point Detector

DOI: dx.doi.org/10.17504/protocols.io.j8nlk8176l5r/v1

5. Analysis – Characterization of the Photon Conversion Factor, Noise, and Dynamic Range

DOI: dx.doi.org/10.17504/protocols.io.rm7vzjew2lx1/v1

Meeting documentation

47th meeting, 9th of December 2024

Meeting date

09/12/2024 @ 5:00 PM (CET/CEST)

Meeting summary

We started the meeting with a short discussion about our meeting day, time, and length of the meeting. In the end we decided to keep the current scenario of meeting each second Monday of a month for 90mins from 5:00 – 6:30 PM CET. This discussion was followed by a short report from the last two QUAREP-LiMi SC meetings. The main message for us was that the SC approved of our request to publish our protocols collection. This approval included the conditions that we solve all open comments and clarify author contributions following the CreDiT taxonomy. It was suggested to us to add a document to each protocol with the respective author’s contribution list. The reminder of the meeting we used to go through the comments at the collection, the protocol 1. introduction, had a quick look at the protocol 2. – Sample Preparation, and started going through the comments of protocol 3. Data Generation – Systems with Area Detector. Since there were quite a few very helpful last minute comments, we did not manage to finish going through the protocols. We are still aiming to finish and publish before the holiday season. Therefore, we decided to meet again this week Thursday, December 12th, from 4-5PM CET in the WG2 zoom room. Everybody is welcome to join.
At the end of the meeting we briefly talked about the current status of the NBO-Q camera model and glossary project. We finished the series of meetings revisiting the hardware part of the model after the first change updates. The latest changes are being added to the model. The debriefing group is working on preparing the settings part of the model. Another stakeholder meeting series will be organised for January 2025.
We closed the meeting by having a quick look at the list of To Do’s for next year.

Meeting documentation

  1. Subgroup: Area detector
    • Aims: Establish protocols for characterization of detection systems with an area detector.
    • Co-leads: Britta Schroth, David McFadden
    • Contact information: schroth@mpi-cbg.de
    • On-going tasks: 
      • Move measurement protocol to protocols.io
      • Test measurement protocol with marker pen as sample
      • Evaluate measurement and analysis parameters written down in Airtable
    • Cloud storage location (can be accessed as a member) → here
  2. Subgroup: Point detector
    • Aims: Establish protocols for characterization of detection systems with a point detector.
    • Co-leads: Gert-Jan Bakker, Andre Zeug
    • Contact information: gert-jan.bakker@radboudumc.nl
    • On-going tasks: 
      • Insert measurement protocol to protocols.io
      • Generate comments and hints for protocol
      • Evaluate measurement and analysis parameters written down in Airtable
    • Cloud storage location (can be accessed as a member) → here
  3. Subgroup: Test sample
    • Aims: investigate and define standardized samples for characterization of detection systems.
    • Co-leads: Valeria Berno, David McFadden
    • Contact information: berno.valeria@hsr.it
    • On-going tasks: 
      • Test and characterize standardized light sources for characterization of microscope’s detection systems.
    • Cloud storage location (can be accessed as a member) → here
  4.  

Memberlist WG 2