Dave VanHorn wrote:
>> You can't test accuracy of a scanner based on trashed printed
>> barcodes.
>
> I've been known to test the decode algorithms that way..
> Printing the targets with progressively higher distortion.
>
> There are a number of things to look at here, starting with the
> reading pens, scan method, and target accuracy.


Almost 100% of the scanners (not pens) use to select one pure video line
from the CCD.
Some scanners use to buffer several lines (according to memory available),
spaced by 10 lines or so, to be used in case the barcode could not be
decoded from the video line under analysis.

So, everything is based on the CCD quality and resolution, lumens
sensitivity, electronic shuttle speed and such.

Wagner.

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