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The best camera for barcode reading

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Kemme:
Hello all

I am trying to build a barcode reader with just raspberry pi + webcam set.
What are the most important camera specifications for barcode reading? Is it resolution? I have Creative Live! Cam Sync HD and it's mediocre. Sometimes it requires a lot of aligning untill it is finally able to scan the barcode. Seems like I'll have to buy another one but I don't know what to look for.

TopLoser:
Post an image that you’ve captured that you can’t read and I’m sure you’ll get some constructive comments.

Lighting, resolution, contrast, focus, decoding software... there are so many variables it’s certainly not simply a question of better resolution.

pwlps:

--- Quote from: Kemme on May 05, 2019, 09:15:09 pm --- Sometimes it requires a lot of aligning untill it is finally able to scan the barcode.

--- End quote ---

I'm curious: what do you mean by "lot of aligning"  ?   I'm not expert in the field but I thought the software can always find barcodes at any orientation or skew, e.g. by analysing the Radon transform of the image.

DaJMasta:
Have you tried different lighting conditions?  A lot of image recognition algorithms perform a lot better in optimal lighting, so you may be able to get substantially better results with just a bit more light (or positioned in a way to not be reflective).

EEVblog:
I'm just using one of those cheap arse pencil type USB microscopes

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