ZXing.BarcodeReader code not decode barcode

Question

This barcode:

Will not decode. What is wrong with that image that it will not decode.

string barcodePng = "tmp.png"; reader = new BarcodeReader(); reader.Options.PossibleFormats = new List<BarcodeFormat>(); reader.Options.PossibleFormats.Add(BarcodeFormat.CODE_39); reader.Options.TryHarder = true; using (var barcodeBitmap = new Bitmap(barcodePng)) { var result = reader.Decode(barcodeBitmap); if (result != null) { Console.WriteLine("barcode did not decode"); } }

This one is different from other thousands of other images that did decode in that I had to repair the original .tif file that it was cut from because it was damaged. I repaired it by converting it to .pdf and back to .tif.

I assume this is Code 39; compare your image to the valid barcode for the same data. — GSerg
– GSerg, Commented Oct 20, 2018 at 20:11
I voted you up for providing an image of a valid one. I will try repairing image a different way that will not blur the image. — Be Kind To New Users
– Be Kind To New Users, Commented Oct 20, 2018 at 20:16

GSerg · Accepted Answer · 2018-10-21 06:55:27Z

What is wrong with that image that it will not decode.

It will not decode because some bars have merged and/or changed their widths due to low resolution and blurring.

Assuming the symbology is Code 39, the valid barcode looks like this:

To fix the image I converted to .pdf with a different print option. I turned off the "sharpen" option on the print driver.

Collectives™ on Stack Overflow

ZXing.BarcodeReader code not decode barcode

1 Answer 1

1 Comment

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Related