OK, it’s not the mail room but this press release about vision in a DHL parcel distribution center is pretty interesting.
Making a long story short, DHL have thrown out bar code readers in favor of “auto-focus line-scan cameras” from German web inspection specialist, Vitronic. I was intrigued by the idea of an “auto-focus line-scan camera” so I spent a little time on the Vitronic web site trying to learn more.
The cameras referenced in the press release are VICAM-ssi2 models. These are interesting because they’re actually built by Vitronic; I had expected a Basler base at least. Unfortunately though, I could find no reference to an “auto-focus” capability, so I’m left wondering, how do they do that?
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Maybe something like this: http://www.varioptic.com/banner/varioptic-liquid-lens-for-business-devices.php
Somethink like that is also used by some other 2D code readers.
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