Would be interesting to see. Let us know if you manage to
find it.
I do note the latest versions of acrobat viewer do perform "cleartype"
kinds of stuff. (See Preferences->general, and configure cooltype).
I suspect this is what you saw, but in commercial form.
I find, however, that what Freetype/Xft does significantly better: I suspect
subpixel decimation and filtering algorithms Keith uses are a bit more
optimized toward clarity of the display than toward fidelity to the font
(or maybe Keith is just plain smarter than Adobe :-). I'll take what
we get over what "Cooltype" or "Cleartype" anyday. As I've not stared
at a recent MacIntosh, I don't have an opinion on what Apple's quality
looks like.
At this date, I think we should be optimizing toward flat planel display
in our technologies, given the technological trends.
Monitors finally, after several decades of reports of their premature demise,
seem on their way out.
We'll still have to deal with monitor like systems for projectors,
at least for a while, I suspect.
- Jim
> Sender: [EMAIL PROTECTED]
> From: Allen Akin <[EMAIL PROTECTED]>
> Date: Mon, 23 Sep 2002 14:27:54 -0700
> To: [EMAIL PROTECTED]
> Subject: Re: [Render] Re: Question with regards to componentAlpha
> -----
> On Mon, Sep 23, 2002 at 11:55:57AM -0700, Keith Packard wrote:
> |
> | > I also plan to try multipass rendering to implement high-quality
> | > antialiasing filters with support greater than one pixel in area.
> |
> | The initial ClearType papers demonstrate this kind of filtering, and the
> | theory is certainly compelling -- you should be able to provide
> | near-nyquist frequencies on a CRT by doing full-screen filtering of this
> | kind. ...
>
> If I remember correctly, around 1996 a demonstration PostScript viewer
> with high-quality filtering was making the rounds on the net. The
> results were pretty impressive to me at the time. Allegedly the three
> key ingredients were wide filter support, negative sidelobes in the
> filter kernel, and deconvolution to account for CRT spot intensity
> effects. Wish I could find a reference to it.
>
--
Jim Gettys
Cambridge Research Laboratory
HP Labs, Hewlett-Packard Company
[EMAIL PROTECTED]
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