>> I meant you can't just give a machine a BW picture of a tree and have it
>> automatically know to turn it green. That's impossible. 
> 
> I don't know that to be the case.  Again, a case of one's ability to 
> fathom how something like that is done doesn't translate to "there's no 
> way it could possibly be done".

It's a basic premise of signal processing that you cannot recover data 
that isn't there any more. Shannon's theorum and all that.

Whether you can *fake* something that "looks" right is another matter. 
But *recover*? No. Impossible.

-- 
http://blog.orphi.me.uk/
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