Comments (2)
Zxing doesn't guarantee to find every barcode. Especially if the barcode is rotated the library has some issues.
You should restrict the formats which are looked for.
var reader = new BarcodeReader();
reader.Options.PossibleFormats = new List<BarcodeFormat> { BarcodeFormat.CODE_128};
It prevents that you will find false positives.
Try to capture the barcodes unrotated, if possible, use an continuesly image stream.
It improves the user experience.
The zxing library itself was originally developed for mobile device scenarios which continuesly scanning for codes while the user focuses the camera.
Feel free to provide a PR which improves the scanning result for rotated codes.
from zxing.net.
Thanks for the feedback. I did restrict the format to Code 128 but then the decoding would fail on the angled version.
In my testing this Zxing library has done a good job with angled images, just not with Code 128. I've tried other online barcode decoders and they don't have any problem with the angled image I've been testing with so I think there could be room for improvement. I might post a PR specific to Code 128 since I've not seen issues in my testing with other formats.
Unfortunately in my use case I will only have still images to work from that have been previously captured so I need the best decoding I can get from imperfect images.
from zxing.net.
Related Issues (20)
- UPC/EAN Extension 2/5 does not read the 2/5 digit extension
- Can someone finally fix the example usage in README?
- Don't decode QR_CODE HOT 3
- ZXing.Net doesn't seem to be able scan more complicated PDF417 barcodes HOT 12
- EPC QR Code (European Payments Council) Not Decoded HOT 3
- Support for Latin-1 in BARCODE-128 HOT 4
- Upgrade SixLabors.ImageSharp - current version has vulnerabilities HOT 1
- UPC_A's error message is wrong.
- The image for PLESSEY is vertically tiny. HOT 6
- The sides of UPC_A's image could be slightly cut out. HOT 1
- Centering PDF_417 Barcodes and Unstable Width/Height HOT 1
- Barcode as small part of image HOT 1
- Barcode generator: unpredictable whitespace padding around it depending on requested Width
- Upgrading to Magick.Net 13.7.0 breaks ZXing.Magick HOT 1
- ZXing for WinUI-3 HOT 1
- Barcode DATA_MATRIX code = BCD88888888-1 to BCD88888888-99 Don't look right they are not a sqaure
- Undecodable QR code generated
- Recognizes the UPC_E format on the Qr_CODE HOT 5
- Cannot create GenericMultipleBarcodeReader from ZXing.OpenCV.BarcodeReader HOT 2
- Digitally sign ZXing NuGet package assemblies HOT 1
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