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| Verify printed letters on a small plastic canister |
Quality of printed letters
This example shows a technical feasibility to
verify the integrity of printing.
Smearing, partial or total missing, miss-alignment
wrong charactercc are common examples.

Photo(left): General view of a (defective) container with printed letters all around in blue ink.
Photo(middle): Original image with missing letters ("N")
Photo(right) : Unfolded image after a special image processing, showing missing "N" in red. |
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