What a camera needs to see misting on a pharma label
Look for the fine fog dots in the unprinted area. Inside a solid you almost cannot see them. A steady sight needs about 3 pixels. If you cannot see it clearly, do not loosen the threshold.
To see misting on a pharma label, look for the fine fog dots in the unprinted area. Inside a solid you almost cannot see them. If you cannot see it, change the light or the resolution first. Do not loosen the threshold first.
If you cannot see it, change the optics first
Fine fog dots sit in the unprinted area, and also around the press. If the image cannot separate them at all, moving the threshold only paints the legal type and the barcode solid red. Look for the fine fog dots in the unprinted area. Inside a solid you almost cannot see them.
Optics
| Need | Enough looks like | Not enough looks like |
|---|---|---|
| Look for the fine fog dots in the unprinted area. Inside a solid you almost cannot see them. | Fine fog dots in the unprinted area, and also around the press. | Only a blurry circle left |
| About 3 pixels across | Shows up steadily | Comes and goes, and you still write that it can be detected |
| Legal type and the barcode in the field of view | The critical spot is seen | Only the decorative edge is lit |
Try it on a sample
- Confirm the image can separate it: Fine fog dots in the unprinted area, and also around the press.
- Count about how many pixels it spans.
- If you cannot see it clearly, change the light or the focus. Do not change the threshold.
