Hello,
Aspose Barcode Reader has been working fine so far, but every now and then there is a barcode or two that it just can’t recognize.
The barcodes we usually scan are almost always present angled on the pdf/image, and it works just fine, so we don’t expect that to be the case here.
The barcode also looks very much like others in terms of quality.
Are you able to scan this barcode on your end?
Tech: .NET 6.0
Package: Aspose.BarCode 21.2.0 (also upgraded to 22.5.0 with same result)
Some information on our process:
- we load PDF pages into Bitmap
- we use: BarCodeReader.ProcessorSettings.UseAllCores (set to true)
- we scan for the following barcodes: DecodeType.Code39Standard
- we tried almost all possible combinations of quality settings (median smoothing, decreased image, salt and pepper, etc.)
Here is the BarcodeResult object that I inspected right after scanning (it finds only “50”):
[0] = {BarCodeResult} CodeType = Code39Standard, CodeText = "50", Confidence = Moderate, ReadingQuality = 80,72972106933594
CodeBytes = {byte[]} byte[2]
CodeText = {string} "50"
CodeType = {SingleDecodeType} Code39Standard
CodeTypeName = {string} "Code39Standard"
Confidence = {BarCodeConfidence} Moderate
Extended = {BarCodeExtendedParameters} Extended: 1D
ReadingQuality = {double} 80.729721069335938
Region = {BarCodeRegionParameters} Angle = 2,070030689239502, Quadrangle = {LeftTop = {X=116,Y=309}, RightTop = {X=199,Y=312}, RightBottom = {X=198,Y=351}, LeftBottom = {X=115,Y=349}}
2 Recognized Barcode Example.pdf (105.0 KB)
1 Unrecognized Barcode Example.pdf (138.9 KB)
I have attached 2 PDF files, one having the barcode it can’t scan, and the second having a barcode it can scan.
Thank you for your help.
Best regards,
Marko Bezjak