Barcodes not being decoded 100% of the time

Discussions about 1D barcode reading and writing
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jdomkus
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Joined: Mon Dec 15, 2008 7:12 pm

Barcodes not being decoded 100% of the time

Post by jdomkus » Wed Mar 03, 2010 3:22 am

I have a vb.net application with the latest gdpicture.net dll's. Scanning 10 images will result in all barcodes being decoded properly. If I scan 20 images 3 or 4 barcodes will not be decoded, but if I scan these images by themselves they work fine. If I rescan the 20 images, different ones than the read before will not be decoded.

I have tried this program on three different pc's with three different scanners (Scanners are brand new).

The scanners are Fujitsu fi-6130 and the software is running on windows xp. I have been told the barcode is 3 of 9

Is there any type of setting or debug mode I can turn on to help explain why this is happening?

Than you in advance.

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Loïc
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Re: Barcodes not being decoded 100% of the time

Post by Loïc » Wed Mar 03, 2010 4:49 pm

Hi,

Usually bad barcode detection can be caused by:

- Poor image quality
- Low resolution image
- Invalid barcode
- Image processing needed (IE: thresholding)

If you want investigation on this kind of issue, please send us your image including undetected barcode at esupport (at) gdpicture (dot) com.

With best regards,

Loïc Carrère

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Loïc
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Re: Barcodes not being decoded 100% of the time

Post by Loïc » Fri Mar 05, 2010 10:25 am

Hi,

I got your files thanks. The problem is your barcode is very tiny and part of is is skewed.
maybe you should try to increase a bit the scanning resolution.

I was able to detect your barcode using this code:

Code: Select all

oGdPictureImaging.ConvertTo1Bpp(m_ImageID, 125)
oGdPictureImaging.Barcode1DReaderDoScan(m_ImageID)
With best regards,

Loïc Carrère

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