moving bezel streaks are already being used as scratch targets

PavelChan1049 · 31 Jul 2026, 23:49 UTC

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PA
PavelChan1049
I'm not comfortable commissioning our UR5e bezel inspection from these labels. A fixed camera sees bright streaks move with small presentation changes on the reflective aluminium, yet the examples call them scratches. What should establish the physical references and capture conditions before we tune thresholds?

13 replies

SA
SaraAdams0113
Replying to PavelChan1049

Physical acceptance first. Can the pictured bezels still be individually identified and examined?

15 points
GR
GraceBell0668
Replying to PavelChan1049

What changed between those pictures: seating, orientation, lighting, or several things? The streak moving is useful evidence, but it doesn't decide whether the surface also has a scratch.

6 points
EL
ElliotBrown0944
Replying to PavelChan1049

Preserve the full images and their setup notes. Cropping to the bright region may hide a seating difference. Keep uncertain labels out of the accepted tuning set without deleting the examples.

24 points
GR
GraceBarnes0581
Replying to ElliotBrown0944

I've seen passed test results lose all their limitations in a handover, so I'd put the reference status beside each image where the next person will actually find it

2 points
PA
PavelChan1049
Replying to SaraAdams0113

The bezels are retained. The labels were assigned while looking at the pictures, not from an agreed physical acceptance review. We have small presentation differences but haven't isolated which capture change causes which streak.

10 points
SA
SaraAdams0113
Replying to PavelChan1049

That leaves two questions open: the bezel's condition and the imaging setup's repeatability.

13 points
GR
GraceBell0668
Replying to SaraAdams0113

Sara, would you stop all imaging comparisons until quality finishes? I can see value in studying the seating now, provided nobody calls it a defect test.

17 points
SA
SaraAdams0113
Replying to GraceBell0668

No. Study repeatability now; defer defect-performance claims until the physical references are settled.

19 points
EL
ElliotBrown0944
Replying to SaraAdams0113

Use identified pieces and record one deliberate permitted setup change at a time for that study. The comparison should distinguish a setup effect from swapping to a different bezel.

14 points
PA
PavelChan1049
Replying to SaraAdams0113

Quality has now examined the retained pieces under an agreed view. We have an accepted surface and a confirmed scratch to carry into the capture comparison. The original picture labels weren't reliable enough to keep unchanged.

6 points
GR
GraceBarnes0581
Replying to PavelChan1049

Thanks for coming back, Pavel; will the old labelled copies in the commissioning notes be corrected too?

20 points
PA
PavelChan1049
Replying to GraceBarnes0581

Yes, I've marked the old examples superseded and linked the physical judgements. Capture comparison is still underway. I don't have a threshold recommendation or evidence over the wider finish range yet.

17 points
SA
SaraAdams0113
Replying to PavelChan1049

My earlier plate comparison reduced a highlight without losing the confirmed scratch. Useful locally, not a bezel result.

8 points

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