RE: OCR/barcode reliability

From: charlie strauss <cems_at_earthlink_dot_net>
Date: Thu Jun 03 2004 - 19:59:15 CDT

I dont want to make too big a deal out of the suggestion but...
There were some recent headlines in which documents that were declassified by "blacking" out certain details were reconstructed by simply measuring the length of the black marks. possible Words could be nailed down from the whole dictionary to a dozen using just the word length in proportional font and expected word type.
as for OCR fonts being fixed spacing this does nto mean they have to printed exactly fixed space, or if not the space between letters then the space between words can be tweaked.

-----Original Message-----
From: Arthur Keller <arthur_at_kellers_dot_org>
Sent: Jun 3, 2004 6:14 PM
Subject: RE: [voting-project] OCR/barcode reliability

At 4:36 PM -0700 6/3/04, charlie strauss wrote:
>Or as I mentioned earlier in this thread you could encode the
>proportional spacing. hide the ECC code there.

OCR fonts are fixed spacing. There's probably not enough resolution
in scanned proportional spacing to do ECC. The spacing data will
have its own errors and round-off problems.

Best regards,

Arthur M. Keller, Ph.D., 3881 Corina Way, Palo Alto, CA  94303-4507
tel +1(650)424-0202, fax +1(650)424-0424
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Received on Wed Jun 30 23:17:05 2004

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