Peter, Thank you for your professional Response. Well, practically all these parameters in this modern age wont appear in our daily life.Its more like trying to work with assembly language.Unless you are developing barcode scanners/readers (software/hardware) or printers or other output machine,modern scanners/printers come with all of these tests as inbuilt features that one would never need to know them.We only need to judge scanners as good/reliable or not if the can/cant give results. If you are in research business i advice you to try read algorithms others are using to identify and measure these parameters.Otherwise barcode have standards and scanners go for some or all popular, and they read what the printers/output devices has done.So printing (fonts,material, etc ) would determine how the scanners/readers would find it easy to detect. Scanners will always be a keyboard emulators,so why then spent time/resource measuring quality of characters?You cant have bad barcodes if you planned them within standards,print them accordingly and use quality scanners. If you are in research then you need to dig in various techniques used in moderm image recognition,with specifics in barcodes. Nicholas. On 3/9/15, Peter Mugoh <pkmugoh@gmail.com> wrote:

Nicholas,

When we check the quality of the bar code we look at the following:-

1. Reflectance 2. Symbol Contrast 3. Edge Contrast 4. Modulation 5. Defects 6. Decodability 7. Decode 8. Blemish

There is also the overall grade in %.

Thanks and regards,

Peter Mugoh

On Mon, Mar 9, 2015 at 1:47 PM, Kinpro Computers-All IT soutions < kinprocomputers@gmail.com> wrote:

...

Would you kindly make it clear.

Barcode is just a machine readable unique id to identify things that have information in computers system. What you mean by respective Qualities.Do you mean the quality of print out?or the quality of the represented object.

So far as the barcode reader can read the code,it would only return the code to the processing software that can go on with its programmed task.so its either readable or unreadable and the scanner would ignore.Quality of printout you would need an image processing software and camera.If its the quality of the represented object then its hard to help out....you can simply imagine someone want to know the quality of and ID holder just by looking at the ID.

If it the quality of the hardware(scanner) then its another thing.Scanners can vary in functionalities and sensitivities if not barcode standards.All in all they simply keyboard emulators.

But keep in mind that verification of barcodes must be done against the previously store information .Barcodes are meant to be used with other specialized systems with monitoring and searching capabilities and NOT SOMETHING TO VERIFY PRODUCT QUALITY

Kindly clarify your intention.

Nicholas.

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Date: Mon, 9 Mar 2015 10:48:38 +0300 From: Peter Mugoh <pkmugoh@gmail.com> To: Skunkworks Mailing List <skunkworks@lists.my.co.ke> Subject: Re: [Skunkworks] Barcode Verification Hardware & Software Message-ID: < CAFbCQha-CvgWw0eP4AaEP5Dh3n8KPCddMeaLVrCGqCD-podWig@mail.gmail.com> Content-Type: text/plain; charset="utf-8"

Skunks / Skunkettes,

I am looking for the above cost effective hardware and sofware. This should be able to analyse different types of bar codes i.e. 1D, 2D (QR Codes, Data Matrix, e.t.c) and give their respective qualities.

Thanks in advance.

Peter Mugoh

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