On Jul 12, 2004, at 12:44 PM, Edward Cherlin wrote:
>
> Many years ago I read about optical computing systems that used
> lenses for Fourier transforms and convolutions. They could pick
> out words or phrases on a page, in the manner you describe.
> Nobody could accuse us of fiddling in software with one of
> those.
>
Well I would not particularly recommend doing it optically. Not only
is it clumsy in practice but You want the luxury to digitally massage
the image and account for non-linear distortions caused by the
error-model of the printer, paper, and scanner (e.g. out of focus,
stretched, etc...)
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Received on Sat Jul 31 23:17:03 2004
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