I've retained and identified our brushed trim plates. Their scratch captions are still guesses from images. What comparison should quality and imaging share before we tune this FR5 camera job?
Keep the brushing direction identifiable in each view. I would use an existing edge or hole as the orientation reference, so nobody has to infer it from the bright band itself.
And keep the original images. A presentation slide can change contrast and orientation without anybody noticing. The comparison needs capture settings and actual seating conditions, not just a folder of persuasive crops.
Try to make that accepted plate look bad in the comparison too. Not by editing the picture, I mean include its permitted presentation variation. A threshold that only survives the neatest example is no use at changeover.
The first comparison mixed brushing directions. Our holder permits a half-turn which the loading instruction never distinguished. Imaging has compared both: the score disappears in one orientation under the current light. So a threshold isn't the first decision after all.
Could the part still arrive in either orientation in the real workflow? If yes, writing an arrow on the reference sheet will not make the unwanted presentation impossible.
Keep both orientations in the acceptance set, then. Your physical reference decisions are useful now; the imaging result still has an explicit failed condition instead of a conveniently omitted picture.