Getting consistent inspection evidence before commissioning - presenting reflective components for surface inspection

RebeccaBrown0952 · 22 Jul 2026, 12:31 UTC

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RE
RebeccaBrown0952
Our planned presenting reflective components for surface inspection in a robot-presented camera station has Fairino FR5 presenting a bright-finished enclosure faceplate to a fixed camera. The example images contain bright streaks that shift with small presentation differences, yet those streaks are being labelled as scratches. Before commissioning, I'd like to establish reliable references and image conditions for threshold tuning.

8 replies

AL
AlexArcher0385
Replying to RebeccaBrown0952

Were those scratches confirmed on the physical samples using your agreed appearance method? Start by linking each image to a sample and its inspection result

7 points
RE
RebeccaBrown0952
Replying to AlexArcher0385

@AlexArcher0385 I've found that some labels were assigned from the images themselves. The samples are still available, but those labels have no corresponding physical inspection results, making the reference circular.

19 points
AL
AlexArcher0385
Replying to RebeccaBrown0952

Keep the image-only labels uncertain pending physical inspection. A controlled comparison of lighting and presentation can then investigate whether the moving streaks indicate reflection effects

12 points
LE
LeoAdams0101
Replying to AlexArcher0385

A scratch's visibility can change with presentation too. Don't let 'moving streak' quietly become the rule for relabelling something acceptable.

0 points
AL
AlexArcher0385
Replying to LeoAdams0101

Correct. I meant a reason to investigate the imaging, not a new defect label. Physical acceptance stays with the agreed inspection method

19 points
OW
OwenBrown0921
Replying to AlexArcher0385

@AlexArcher0385 So uncertain isn't the same as good? Where do those images go?

5 points
AL
AlexArcher0385
Replying to OwenBrown0921

Retain their sample identities and undecided status. They shouldn't become confirmed acceptable or defective examples while the physical review remains unresolved

14 points
RE
RebeccaBrown0952
Replying to AlexArcher0385

@AlexArcher0385 I've checked the image folders and found that exposure and presentation both changed between them. Their improved appearance can't be attributed to either change individually.

5 points

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