What the camera needs to see ghosting on a pharma label
To see ghosting on a pharma label, you need this: the view must hold both the large solid and the light type behind it. If you cannot see it, change the light or the resolution first. Do not loosen the threshold first.
To see ghosting on a pharma label, you need this: the view must hold both the large solid and the light type behind it. 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
The light type behind a large solid is weaker than elsewhere. If the picture cannot separate it at all, loosening the threshold only paints the legal text and the barcode solid red. The view must hold both the large solid and the light type behind it.
Optics
| Need | Enough looks like | Not enough looks like |
|---|---|---|
| The view must hold the large solid and the light type behind it. | The light type behind a large solid is weaker than elsewhere. | 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 |
| Legal text and the barcode 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: the light type behind a large solid is weaker than elsewhere.
- Count about how many pixels it spans.
- If you cannot see it, change the light or the focus. Do not change the threshold.
