We're planning checking cosmetic metal surfaces with a fixed camera, with Fairino FR5 presenting a brushed stainless trim plate to a fixed camera in a precision metal-parts inspection area. Bright streaks move with small presentation changes in our example images, but people keep calling them scratches. We haven't commissioned the cell.
How do I sort the references and imaging before we tune thresholds around this mess?
@VictorArcher0359 Check whether the suspected scratches were confirmed on physical samples under the agreed appearance procedure. Link each image to its sample identity and inspection result first.
@VictorAdams0098 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.
Mark those labels uncertain and have the samples inspected properly. Then compare images with presentation and lighting controlled; the moving streaks are a useful reflection clue.
You're right to qualify that. The streak behaviour motivates an imaging investigation; it doesn't replace physical classification under the agreed inspection procedure.
@CallumChan1056 Keep them explicitly undecided, with the sample link. Don't use them as confirmed examples of either class until the physical review settles them.
@VictorAdams0098 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.
Which details did you retain with each image? I can record sample identity and settings, but I'd like a practical record people will actually maintain.
@VictorArcher0359 For my separate setup, sample identity, exposure, lighting arrangement and presentation condition were the useful essentials. They let us understand comparisons without relying on recollection.
@HarishBrooks0837 Use those details to ask your vision specialist for controlled comparisons on representative surfaces. Keep the sample set fixed when assessing an acquisition change.