Xref: utzoo comp.graphics:3551 comp.text:2722
Newsgroups: comp.graphics,comp.text
Path: utzoo!utgpu!jarvis.csri.toronto.edu!dgp.toronto.edu!avi
From: avi@dgp.toronto.edu (Avi Naiman)
Subject: Re: Gray-scale antialiasing (yes, it can work)
Message-ID: <8811080220.AA15967@explorer.dgp.toronto.edu>
Keywords: anti-aliasing text
Organization: University of Toronto, CSRI
References: <74013@sun.uucp> <148@internal.Apple.COM> <4763@mnetor.UUCP> <174@internal.Apple.COM> <19809@apple.Apple.COM> <515@voodoo.UUCP> <4848@polya.Stanford.EDU>
Date: Mon, 7 Nov 88 21:20:25 EST

In article <4848@polya.Stanford.EDU> kaufman@polya.Stanford.EDU (Marc T. Kaufman) writes:
>In article <515@voodoo.UUCP> bhagwan@voodoo.UUCP (The Bhagwan) writes:
>
>>  True enough...but....consider subpixel positioning. You'll need additional
>>  bitmaps for this. If you want 1/4 pixel positioning, you need 4 bitmaps.

>I don't think you want subpixel positioning.  If you have it, you get 4
>different appearances for each letter.

This remains to be qualified.  Will you really get four different
'appearances'?  Sometimes yes, sometimes no.  More to the point, at
what character size / pixel resolution / viewing distance combinations
will the 'appearances' be the same, but the visual impression be that
of sub-pixel positioning?  Unfortunately, no one has yet done the
necessary experimentation to establish these parameters.  Until then,
it will be premature to respond to such questions except under very
constrained circumstances.
-- 
Avi Naiman
avi@dgp.toronto.edu