What the camera needs to see a lint hickey on a textured wine label
To see a lint hickey on a textured wine label, you need this: you must see the fibre inside the ring. If you cannot see it, do not name it at random. If you cannot see it, change the light or the resolution first. Do not loosen the threshold first.
To see a lint hickey on a textured wine label, you need this: you must see the fibre inside the ring. If you cannot see it, do not name it at random. If you cannot see it, change the light or the resolution first. Do not loosen the threshold first.

Fix the optics before you loosen anything
You can see fibre inside the white ring. Sometimes you can wipe it off. If the picture cannot separate it at all, loosening the threshold only paints the wine name and the fine type solid red. You must see the fibre inside the ring. If you cannot see it, do not name it at random.
Optics
| Need | Enough looks like | Not enough looks like |
|---|---|---|
| You must see the fibre inside the ring. If you cannot, do not name it. | Fibre is visible inside the white ring. Sometimes you can wipe it off. | Only a blurry circle is left |
| About 3 pixels across | It shows up steadily | It comes and goes, and you still write that it can be caught |
| Wine name and fine type are in the view | The critical spot is seen | You only light the decorative edge |
Try it on a sample sheet
- Confirm the picture can separate this: fibre is visible inside the white ring, and sometimes you can wipe it off.
- Count about how many pixels it spans.
- If you cannot see it, change the light or the focus. Do not change the threshold.