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Tracker Phase 2 upgrade, IIHE(ULB/VUB) Metrology Working Group


Scope:
* Development of an automated metrology setup that can:
- measure the sensor mask to edge distance for single sensors.
- measure the corner to corner distance between upper and lower sensors.
- help with general purpose metrology

Meeting slot: (tentatively) Tuesday 13:00.

Given that there is a large overlap between software developments for Pattern Recognition WG and the Metrology WG, collaboration is expected. The Twiki for the Pattern Recognition WG can be found here:
https://twiki.cern.ch/twiki/bin/view/Main/IIHEPatternRecognitionWG

Meeting room: https://vidyoportal.cern.ch/join/AxbFexLaqJ
https://cern.zoom.us/j/6200434616?pwd=Z0ZzRnRjTjAvZEpuUFJ6RHEvVWNRZz09

An overview of the metrology setup can be found in this presentation:
https://indico.cern.ch/event/890601/contributions/3756093/attachments/1991001/3319418/metrology_overview.pdf

Tasks

Assigned to Due date Description State Closed Notify  
EmilSorensenBols, AnnemariePaulMorel   Track the delivery of the ordered equipment     edit
EmilSorensenBols, AnnemariePaulMorel   Setup the equipment     edit
EmilSorensenBols, AnnemariePaulMorel   Build a holder for the camera and lens     edit
EmilSorensenBols, AlexanderMorton   Optimization of the base edge detection algorithm     edit
Main.?   Make line filtering algorithm more robust for more use cases     edit
Main.?   Make the function that calculates distances between edges more flexible     edit
Main.?   Add pattern recognition algorithm to detect alignment marks     edit
Main.?   Optimize algorithm that stops the z-stage when corner is in focus     edit
Main.?   Add corner detection algorithm     edit
Main.?   Integrate the xyz-stages with the pattern recognition setup     edit
Main.?   Integrate the measurement outputs with the database framework     edit

Software

We are using this github repository to coordinate our software developments:

https://github.com/emilbols/PatternReco


Our test images and videos can be found in this CERNBOX directory.

https://cernbox.cern.ch/index.php/s/prUdL1yAzN01BFj

Meeting minutes

12 may:

The xyz stage system, the telecentric lensand the LED lighting has arrived. We will have to test it to make sure none of the equipment is defective. Will be done next week. Furthermore most of themetrology system can already be set up, which should be done in may. Emil will draft a schedule for days where it will be needed to go to IIHE, which he will share with Jorgen. The company delivering the camera, are experiencing delays, and the arrival has been pushed to the start of june. A windows computer will be needed for the setup. Emil will find the main technical requirements and share them with Jorgen. Annemie points out that there currently is a windows laptop in the cleanroom which can probably be used for first tests of the XYZ system.

On software side, Alexander expressed that he had managed to setup the OpenCV framework on his system, and he was having first look to immerse himself in the code. Emil and Alexander discussed the first steps in terms of the software development, which would be to make a python class for hough line manipulation, as well as making a more robust line to line distance calculation function. Finally a function to identify corners in the images, would be an essential first task.

Contact

Group convener: Emil (emil.bols@cernNOSPAMPLEASE.ch)

-- EmilSorensenBols - 2020-04-29

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Topic revision: r5 - 2020-05-12 - EmilSorensenBols
 
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