Zxing unable to read code-128 barcode. Help

[Enye Dela Cruz]

Hello! I need help on using Zxing, we have these code 128 barcodes that can't read by Zxing, these barcodes are printed on cards, any modification or adjustment for this? I am using the default zxing library. Thank you!

[Lachezar Dobrev]

Contrast is too low. White is just above 50%. There is also contrast
gradient. There is also some discolouration in the right part of the
image possibly due to CCD in low light conditions.
I used GIMP and performed the Colours - Auto - Enhance Contrast, and
scaled the image down to a smaller manageable size, and voilà: the
image scanned correctly.

2017-10-19 7:18 GMT+03:00 Enye Dela Cruz <playh...@gmail.com>:
> Hello! I need help on using Zxing, we have these code 128 barcodes that can't read by Zxing, these barcodes are printed on cards, any modification or adjustment for this? I am using the default zxing library. Thank you!
>

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[Enye Dela Cruz]

The answer might be answering the problem on the image on how it is captured by the camera, but I am scanning a barcode already printed on a card, it might not be possible to capture and edit a photo and scan every barcode on every printed card, is there any modifications on the actual scanning and not unto the image because maybe it is just dimmed on how it is captured by my phone.

[Lachezar Dobrev]

Hm. I am not sure I follow you.
Are you referring to the ZXing Application, and not the ZXing Library?
If you're referring to the Application, than it should work as is.
What you can do to enhance the readability is:
- turn on the flash (there is an option in the settings)
- disable all other formats, leave only '1D Industrial' enabled (settings)
- scan from further away (counter-intuitive, but works)


2017-10-23 7:33 GMT+03:00 Enye Dela Cruz <playh...@gmail.com>:

> The answer might be answering the problem on the image on how it is captured by the camera, but I am scanning a barcode already printed on a card, it might not be possible to capture and edit a photo and scan every barcode on every printed card, is there any modifications on the actual scanning and not unto the image because maybe it is just dimmed on how it is captured by my phone.
>

[Enye Dela Cruz]

Hi Lachezar Dobrev, Thank you for responding to me, I imported the latest zxing library, no modifications yet, so I am having all files necessary, I imported it and everything is working fine it responds and resulted accurate barcodes except with the barcodes we really needed, I uploaded a sample card from scan so that theres no problem with any lighting with the shot.

So I am using zxing to my android application.
Scanning barcode for "printed cards" already.

Thank you Lachezar Dobrev!