Inconsistent EAN-13 barcode decoding – wrong digits detected #601
Description
Hello,
I'm experiencing inconsistent and incorrect decoding of EAN-13 barcodes.
In many cases, the barcode is not read correctly even though the image is clear and easily readable by humans. I’ve noticed some recurring patterns in the errors:
- Some digits are misread (for example, a "6" is detected as a different number — just an example).
- Very often, the first 4–5 digits are incorrect, while the remaining digits are correct.
- In other cases, the entire barcode value is wrong.
- Scanning the same barcode multiple times can produce different results.
- Changing angles, distance, lighting conditions, or device position does not consistently solve the problem.
These EAN-13 barcodes are valid and are correctly read by other scanners and mobile apps.
I have tested multiple angles, distances, and good lighting conditions, but the issue still occurs.
Here is a ZIP file containing several sample barcode images that reproduce the issue:
ZIP with barcodes