Datamatrix border can block corner markers
It is possible for the datamatrix to partially block the corner marker, while it is not even placed over it. Likely, this will cause the corner marker to not be detected as the area of the marker does not match the reference.
This image is from a scan uploaded at #404 (comment 35400):
Apparently the bounding box of the image of the datamatrix is wider than the datamatrix itself, which is not needed. We should look into this:
- Is the white border actually part of the datamatrix produced by libdmtx?
- Why is this border added?
- Is there an option to disable the border in dmtx or should we crop the image?